Non Destructive Testing Of Concrete
Nondestructive testing or Non-destructive testing (NDT) is a wide group of analysis techniques used in science and industry to evaluate the properties of a material, component surface & subsurface without causing damage or effect to their future performance or properties. Non-destructive testing is used to detect abnormalities in physical, chemical or electrical characteristics.
NDT provides an edge over conventional methods as it is a fast, cheap and easy process. In 1930s, non destructive testing, where it had been heard of at all, was generally considered an evil.
Non Destructive Testing of Concrete is done here in Non Destructive Testing Lab. Sigma Test cover inspection and gives services of Nondestructive Testing.
Originally found here: http://www.ndtindia.org/
NDT provides an edge over conventional methods as it is a fast, cheap and easy process. In 1930s, non destructive testing, where it had been heard of at all, was generally considered an evil.
Non Destructive Testing of Concrete is done here in Non Destructive Testing Lab. Sigma Test cover inspection and gives services of Nondestructive Testing.
Originally found here: http://www.ndtindia.org/
Classification Of NDT Test Methods
Nondestructive techniques are the means by which materials and structures may be inspected without disruption or impairment of serviceability. The science of nondestructive testing incorporates all the technology for detection and measurement of significant properties, including discontinuities, in items ranging from research specimen to finished hardware and products.
Nondestructive testing has become a progressively more fundamental factor in the effective conduct of research, development, design and manufacturing programs. However, the information required for appreciating the broad scope of nondestructive testing is widely scattered in a multitude of publications and reports.
The National Materials Advisory Board (NMAB) Ad Hoc Committee on Nondestructive Evaluation adopted a system that classified methods into six major categories: visual, penetrating radiation, magnetic-electrical, mechanical vibration, thermal and chemical- electrochemical.
Originally found here: http://www.ndtindia.org/classification-of-ndt-methods.html
Nondestructive testing has become a progressively more fundamental factor in the effective conduct of research, development, design and manufacturing programs. However, the information required for appreciating the broad scope of nondestructive testing is widely scattered in a multitude of publications and reports.
The National Materials Advisory Board (NMAB) Ad Hoc Committee on Nondestructive Evaluation adopted a system that classified methods into six major categories: visual, penetrating radiation, magnetic-electrical, mechanical vibration, thermal and chemical- electrochemical.
Originally found here: http://www.ndtindia.org/classification-of-ndt-methods.html
Ultrasonic Investigation
Ultrasonic Investigation consists of two types of tests they are:
1.Ultrasonic Flaw Detection Test:
Of all the applications of industrial ultrasonic testing, flaw detection is the oldest and the most common. Since the 1940s, the laws of physics that govern the propagation of sound waves through solid materials have been used to detect hidden cracks, voids, porosity, and other internal discontinuities in metals, composites, plastics, and ceramics. Ultrasonic testing is completely nondestructive and safe, and it is a well established test method in many basic manufacturing, process, and service industries, especially in applications involving welds and structural metals.
2.Ultrasonic Pulse Velocity Test:
Ultrasonic concrete testing is based on the pulse velocity method to provide information on the uniformity of concrete, cavities, cracks and defects. The pulse velocity in a material depends on its density and its elastic properties which in turn are related to the quality and the compressive strength of the concrete.
Ndt Ultrasonic Testing of Materials and Welds, Sigma covers every kind of Ultrasonic Inspection which will result to the honest report of Ultrasonic test.
Originally found here: http://www.ndtindia.org/ultrasonic-investigation.html
1.Ultrasonic Flaw Detection Test:
Of all the applications of industrial ultrasonic testing, flaw detection is the oldest and the most common. Since the 1940s, the laws of physics that govern the propagation of sound waves through solid materials have been used to detect hidden cracks, voids, porosity, and other internal discontinuities in metals, composites, plastics, and ceramics. Ultrasonic testing is completely nondestructive and safe, and it is a well established test method in many basic manufacturing, process, and service industries, especially in applications involving welds and structural metals.
2.Ultrasonic Pulse Velocity Test:
Ultrasonic concrete testing is based on the pulse velocity method to provide information on the uniformity of concrete, cavities, cracks and defects. The pulse velocity in a material depends on its density and its elastic properties which in turn are related to the quality and the compressive strength of the concrete.
Ndt Ultrasonic Testing of Materials and Welds, Sigma covers every kind of Ultrasonic Inspection which will result to the honest report of Ultrasonic test.
Originally found here: http://www.ndtindia.org/ultrasonic-investigation.html
Visual Inspection
Visual Inspection is one of the most widely used Non-Destructive Testing methods for the detection of discontinuities before they cause major problems, e.g. poor welding, surface defects, corrosion pits, general condition, degradation, blockages and foreign materials.
Visual Inspection means the inspection of equipment and structures using a combination of human senses such as vision, hearing, touch and smell. Visual Inspection is sometimes carried out in conjunction with devices such as a low power magnifying glass, boroscopes, fiberscopes, digital video borescopes, camera systems and robotic crawler systems
Originally found here: http://www.ndtindia.org/visual-inspection.html
Visual Inspection means the inspection of equipment and structures using a combination of human senses such as vision, hearing, touch and smell. Visual Inspection is sometimes carried out in conjunction with devices such as a low power magnifying glass, boroscopes, fiberscopes, digital video borescopes, camera systems and robotic crawler systems
Originally found here: http://www.ndtindia.org/visual-inspection.html
Portable Hardness
Hardness is a material’s resistance to penetration. In general, an indenter is pressed into the surface of the material to be tested under a specific load for a definite time interval, and a measurement is made of the size or depth of the indentation.
Hardness properties include such varied attributes as resistance to abrasives, resistance to plastic deformation, high modulus of elasticity, high yield point, high strength, absence of elastic damping, brittleness or lack of ductility.
Portable Hardness is not a fundamental property of a material, but a response to a particular test method. Basically hardness values are arbitrary, and there are no absolute standards for hardness. Hardness has no quantitative value, except in terms of a given load applied in a specific, reproducible manner and with a specified indenter shape.
Originally found here: http://www.ndtindia.org/portable-hardness.html
Hardness properties include such varied attributes as resistance to abrasives, resistance to plastic deformation, high modulus of elasticity, high yield point, high strength, absence of elastic damping, brittleness or lack of ductility.
Portable Hardness is not a fundamental property of a material, but a response to a particular test method. Basically hardness values are arbitrary, and there are no absolute standards for hardness. Hardness has no quantitative value, except in terms of a given load applied in a specific, reproducible manner and with a specified indenter shape.
Originally found here: http://www.ndtindia.org/portable-hardness.html
Dye Penetration
There are many methods of tests like Magnetic Particle Inspection or Testing, Ultrasonic Testing, Radiographic Testing, Infrared Testing, Hardness Testing, and Dye Penetrate Inspection so on. Dye Penetrant Testing (DPT), or Dye Penetrant Inspection (DPI) as it’s often known is often known as PT (Penetrant Testing) or LT (Liquid Testing).
It’s a non-destructive testing technique, used on non-porous components such as components, plastic components and ceramics to identify area problems, which may not actually be noticeable to the naked eye.
Dye Penetrant Testing uses capillary action to sketch fluids up into filter areas against exterior causes such as severity, in much the same way a paint brush draws up water. Communication within the fluid and inter-molecular causes between the fluid and solid, act to sketch the fluid up-wards without exterior force and despite opposite causes.
Originally found here: http://www.ndtindia.org/dye-penetration.html
It’s a non-destructive testing technique, used on non-porous components such as components, plastic components and ceramics to identify area problems, which may not actually be noticeable to the naked eye.
Dye Penetrant Testing uses capillary action to sketch fluids up into filter areas against exterior causes such as severity, in much the same way a paint brush draws up water. Communication within the fluid and inter-molecular causes between the fluid and solid, act to sketch the fluid up-wards without exterior force and despite opposite causes.
Originally found here: http://www.ndtindia.org/dye-penetration.html
Core Cutting
Core cutting is coming up as the potential project for many financial commitment companies. Core Cutting has its significant stronghold in allowing accessibility nutrients and or essential products that are included in a core or nutrient ore.
Core Cutting is essential in the building market. It allows companies to take down undesirable surfaces and poorly designed components. This has allowed many companies be able to work with convenience and at the same time prevent failures due to inappropriate businesses. There are seven basic primary reducing services available in the industry. They are core drilling, concrete floor sawing, attractive concrete patterning, Soff cutting, hand sawing, ring sawing and demolition and concrete breaking.
Sigma holds a degree in Core cutting test for soil concrete compaction. Sigma Core cutting testing experts are perfectly trained and gives their client fully satisfaction by their testing.
Originally found here: http://www.ndtindia.org/core-cutting.html
Core Cutting is essential in the building market. It allows companies to take down undesirable surfaces and poorly designed components. This has allowed many companies be able to work with convenience and at the same time prevent failures due to inappropriate businesses. There are seven basic primary reducing services available in the industry. They are core drilling, concrete floor sawing, attractive concrete patterning, Soff cutting, hand sawing, ring sawing and demolition and concrete breaking.
Sigma holds a degree in Core cutting test for soil concrete compaction. Sigma Core cutting testing experts are perfectly trained and gives their client fully satisfaction by their testing.
Originally found here: http://www.ndtindia.org/core-cutting.html
Rebound Hammer Testing
SGM lab solutions was established with an aim to serve a wide variety of laboratory and NDT equipments. We believe in serving products of quality. we offer a complete range of Rebound hammer and RCPT including its testing & calibration service. We provided accuracy and assurance for significant experiments.
Rebound hammer test is done to find out the compressive strength of concrete by using rebound hammer as per IS: 13311 (Part 2) – 1992. The underlying principle of the rebound hammer test is :
The rebound of an elastic mass depends on the hardness of the surface against which its mass strikes. When the plunger of the rebound hammer is pressed against the surface of the concrete, the Spring-controlled mass rebounds and the extent of such a rebound depends upon the surface hardness of the concrete.
Originally found here: http://www.ndtindia.org/rebound-hammer.html
Rebound hammer test is done to find out the compressive strength of concrete by using rebound hammer as per IS: 13311 (Part 2) – 1992. The underlying principle of the rebound hammer test is :
The rebound of an elastic mass depends on the hardness of the surface against which its mass strikes. When the plunger of the rebound hammer is pressed against the surface of the concrete, the Spring-controlled mass rebounds and the extent of such a rebound depends upon the surface hardness of the concrete.
Originally found here: http://www.ndtindia.org/rebound-hammer.html
Introduction to Non destructive Testing
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NDT Inspection & Their Application
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Types of NDT Inspection
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Radiography
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Methods of NDT
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NDT Testing from Sigma Test & Research Center
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Ultrasonic Testing for NDT
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Dye Penetration Testing For Non Destructive Testing
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Rockwell Hardness Test from SGM Laboratory
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Brinell Hardness Test from Sigma
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NDT Testing services in Delhi
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Utrasonic Flaw Detection Test
Ultrasonic Flaw Detection Test Of all the applications of industrial ultrasonic testing, flaw detection is the oldest and the most common. Since the 1940s, the laws of physics that govern the propagation of sound waves through solid materials have been used to detect hidden cracks, voids, porosity, and other internal discontinuities in metals, composites, plastics, and ceramics. High frequency sound waves reflect from flaws in predictable ways, producing distinctive echo patterns that can be displayed and recorded by portable instruments. Ultrasonic testing is completely nondestructive and safe, and it is a well established test method in many basic manufacturing, process, and service industries, especially in applications involving welds and structural metals.
Ultrasonic flaw detection is basically a comparative technique. Using appropriate reference standards along with knowledge of sound wave propagation and generally accepted test procedures, a trained operator identifies specific echo patterns corresponding to the echo response from good parts and from representative flaws. The echo pattern from a test piece may then be compared to the patterns from these calibration standards to determine its condition.
Originally Found Here : http://www.ndtindia.org/ultrasonic-investigation.html
Ultrasonic flaw detection is basically a comparative technique. Using appropriate reference standards along with knowledge of sound wave propagation and generally accepted test procedures, a trained operator identifies specific echo patterns corresponding to the echo response from good parts and from representative flaws. The echo pattern from a test piece may then be compared to the patterns from these calibration standards to determine its condition.
Originally Found Here : http://www.ndtindia.org/ultrasonic-investigation.html
Ultrasonic pulse velocity Test
Ultrasonic concrete testing is based on the pulse velocity method to provide information on the uniformity of concrete, cavities, cracks and defects. The pulse velocity in a material depends on its density and its elastic properties which in turn are related to the quality and the compressive strength of the concrete. It is therefore possible to obtain information about the properties of components by sonic investigations. Test Method: IS 13311 (Part 1)
The pulse velocity in concrete may be influenced by
a) Path length
b) Lateral dimension of the specimen tested
c) Presence of reinforcement steel
d) Moisture content of the concrete
Advantages of Ultrasonic Investigation :
The pulse velocity in concrete may be influenced by
a) Path length
b) Lateral dimension of the specimen tested
c) Presence of reinforcement steel
d) Moisture content of the concrete
Advantages of Ultrasonic Investigation :
- High sensitivity to both surface and subsurface discontinuities, permitting the detection of extremely small flaws.
- Greater accuracy than other nondestructive methods in determining the depth of internal flaws and the thickness of parts with parallel surfaces.
- Nonhazardous to operations or to nearby personnel and has no effect on equipment and materials in the vicinity.
- Capable of portable or highly automated operation.
- The depth of penetration for flaw detection or measurement is superior to other NDT methods.
- Only single-sided access is needed when the pulse-echo technique is used.
- It is highly accurate in determining reflector position and estimating size and shape
Approvals
SIGMA TEST & RESEARCH CENTER provides Approvals
- PWD
- CPWD
- Indian Railways
- DSIIDC
Accreditation
Accreditation is a process in which certification of competency, authority, or credibility is presented.
SIGMA TEST & RESEARCH CENTER provides Accreditation
SIGMA TEST & RESEARCH CENTER provides Accreditation
- NABL
- ISO 17025:2005
- ISO 14001:2004
- Drug Controller of Iindia
- State Drug Control Authority
- ISO 9001:2008 Accredation from joint Accredation System of Australia & New Zealand(Jas-Anz).
Core Cutting Test of Concrete
This test method provides standardized procedures for obtaining and testing specimens to determine the compressive strength of in-place concrete as per the standards of IS: 456. Sampling and sample preparation requirements are given to ensure that dimensional requirements are met and that the specimens are made of intact, sound concrete, and are as free of flaws as the particular structure will allow.
The strength of concrete measured by tests of cores is affected by the amount and distribution of moisture in the specimen at the time of test. There is no standard procedure to condition a specimen that will ensure that, at the time of test, it will be in the identical moisture condition as concrete in the structure.
Originally Found Here ; http://www.ndtindia.org/core-cutting.html
The strength of concrete measured by tests of cores is affected by the amount and distribution of moisture in the specimen at the time of test. There is no standard procedure to condition a specimen that will ensure that, at the time of test, it will be in the identical moisture condition as concrete in the structure.
Originally Found Here ; http://www.ndtindia.org/core-cutting.html
Portable Hardness
Hardness properties include such varied attributes as resistance to abrasives, resistance to plastic deformation, high modulus of elasticity, high yield point, high strength, absence of elastic damping, brittleness or lack of ductility.
Hardness is not a fundamental property of a material, but a response to a particular test method. Basically hardness values are arbitrary, and there are no absolute standards for hardness. Hardness has no quantitative value, except in terms of a given load applied in a specific, reproducible manner and with a specified indenter shape.
Originally Found Here : http://www.ndtindia.org/portable-hardness.html
Hardness is not a fundamental property of a material, but a response to a particular test method. Basically hardness values are arbitrary, and there are no absolute standards for hardness. Hardness has no quantitative value, except in terms of a given load applied in a specific, reproducible manner and with a specified indenter shape.
Originally Found Here : http://www.ndtindia.org/portable-hardness.html
Non Destructive Testing
Non Destructive Testing ( ndt testing ) is used to test or examine an object, material or system without impairing its future usefulness. In ndt testing the objects cannot be destroyed while they are examining objects or materials.
Sigma Test and Research Center offers the Non Destructive Testing. In Sigma Test and Research Center the NDT Professionals can attend to examine the all ndt tests of their clients.
Sigma Test and Research Center offers the Non Destructive Testing. In Sigma Test and Research Center the NDT Professionals can attend to examine the all ndt tests of their clients.
Sigma Test and Research Center Facilitates different kinds of Non Destructive Testing :
• Penetrant Testing
• Ultrasonic Testing
• Core Cutting
• Portable Hardness
• Visual Inspection
• Rebound Hammer
Originally found here : http://www.ndtindia.org/
• Penetrant Testing
• Ultrasonic Testing
• Core Cutting
• Portable Hardness
• Visual Inspection
• Rebound Hammer
Originally found here : http://www.ndtindia.org/
Ultrasonic Testing For Non Destructive Testing
Ultrasonic Testing or UT as its known has programs in a wide range of sectors, from aerospace, automobile, to substance, oil, large storage space, and power creation and overseas. UT is aspect of a selection of techniques known as NDT (Non Destructive Testing) methods. Their objective in industry is to allow the examination of parts and equipment with no damage or disrupting the condition. This allows testing and knowing of degradation/problems to happen without further degrading the aspect or disrupting highly adjusted procedures.
Ultrasound Testing is a method that uses ultrasonic audio surf with high wavelengths which variety from 0.1 - 20 MHz, well above the sensible variety for listening to (20Hz - 20 KHz). This surf can be instructed at components to identify faults, possibly unseen to the undressed eye. The procedure performs by using the online characteristics of audio surf, by predicting them at a content, they'll journey in a directly range through a content until they experience an area with another method (such as air) which will then cause them to indicate back. These insights can be calculated and used to discover faults such as breaks in components.
Ultrasound Inspection can be used on all materials and some non-metals, such as tangible and timber, though with less quality. In conventional UT a piezoelectric sensor / probe is run over the item to be examined, as power operates through the sensor / probe, it's transformed by the piezoelectric content within the sensor / probe into ultrasonic surf. These surf run through the content and are either obtained on the other part by an individual sensor / probe, or deflected and obtained by the unique sensor / probe. It can be used on a variety of materials, generally, steel, plastic materials, compounds and ceramics. The only real exclusions being wood and document.
Ultrasound is a non-destructive testing technique, significance that the technique presents pressures well below the flexible restrict of the content, and presents no risk of harm or deterioration. This is often useful when a defect may need delicate research. And also comes in useful when looking for faults in common.
Ultrasound and other NDT techniques are used in market to analyze components, often for protection and lawful factors, though sometimes for other uses such as examining hard to achieve locations before investing more money and/or attempt to examine the area detailed. Cases where frequent and generous use of NDT can be valuable become obvious when experienced with a program failing that can be extremely damaging to manufacturing or income. An example lately engaged a job where an energy place had to take generator off-line expectantly, resulting in not only stress, lost time, but also a large lack of manufacturing and included cost for fix.
Ultrasound Testing is a method that uses ultrasonic audio surf with high wavelengths which variety from 0.1 - 20 MHz, well above the sensible variety for listening to (20Hz - 20 KHz). This surf can be instructed at components to identify faults, possibly unseen to the undressed eye. The procedure performs by using the online characteristics of audio surf, by predicting them at a content, they'll journey in a directly range through a content until they experience an area with another method (such as air) which will then cause them to indicate back. These insights can be calculated and used to discover faults such as breaks in components.
Ultrasound Inspection can be used on all materials and some non-metals, such as tangible and timber, though with less quality. In conventional UT a piezoelectric sensor / probe is run over the item to be examined, as power operates through the sensor / probe, it's transformed by the piezoelectric content within the sensor / probe into ultrasonic surf. These surf run through the content and are either obtained on the other part by an individual sensor / probe, or deflected and obtained by the unique sensor / probe. It can be used on a variety of materials, generally, steel, plastic materials, compounds and ceramics. The only real exclusions being wood and document.
Ultrasound is a non-destructive testing technique, significance that the technique presents pressures well below the flexible restrict of the content, and presents no risk of harm or deterioration. This is often useful when a defect may need delicate research. And also comes in useful when looking for faults in common.
Ultrasound and other NDT techniques are used in market to analyze components, often for protection and lawful factors, though sometimes for other uses such as examining hard to achieve locations before investing more money and/or attempt to examine the area detailed. Cases where frequent and generous use of NDT can be valuable become obvious when experienced with a program failing that can be extremely damaging to manufacturing or income. An example lately engaged a job where an energy place had to take generator off-line expectantly, resulting in not only stress, lost time, but also a large lack of manufacturing and included cost for fix.
About Visual Inspection For NDT
The servicing of a frequent examination routine is important in so many different places of market. Visual Inspection brands allow for the immediate evaluation of circumstances which are necessary to observe for their current and ongoing protection.
Discovering state-of-the-art visible examination techniques for market uses is becoming very important in various areas for better QC and information purchase along with information research. These types of techniques are a perfect device to have so you can management as well as check the in-sight perspective and commercial techniques on the manufacturer ground. These innovative techniques are looking for an extensive use in both technological as well as in the commercial group for servicing of the features or inspection of components and equipment. Nondestructive Testing is a selection of various analysis methods which are used in market and technology for analyzing the qualities of a element, content or program. These methods have to create sure that there should not be any harm to the content being examined. This is because of the purpose that the products do not get customized while methods are conducted on them. The methods are extremely useful and conducted by professionals and qualified professionals. They can preserve a lot of time and initiatives invested on item assessment, analysis and problem solving.
Visual Inspection is one of the most commonly used Non-Destructive Testing methods for the recognition of discontinuities before they cause major problems, e.g. inadequate welding, area problems, deterioration sets, general condition, deterioration, obstructions and foreign materials. It means the inspection of equipment and components using a mixture of human feelings such as perspective, hearing, touch and fragrance. Visual Inspection is sometimes carried out together with devices such as a low power magnifier, boroscopes, fiberscopes, video borescopes, camera techniques and automatic spider techniques.
The more common types of visible examination brands can be found on electric gadgets. This convenient equipment analyze brands, or PAT brands, expose the position of a system as to its safe utilization as well as the recognition number and the schedules of the present examination along with the next suggested examination. PAT brands come in a wide range of styles and components which allows for a greater independence of program to the various elements of an electric system, such as routine forums and cable many. Of course, other sectors are required to exist the protection position of their particular products and gadgets. The development market, the food produce and submission market, and the various technological and medical sectors make use of visible examination brands as well. Safety risks, health issues, and biohazards related to technology and medication demand that the products and equipment of produce, submission, and convenience engaged in these sectors show their protection status and any potential threat they may existing to the public and the surroundings.
While direct noticeable evaluation is the most common nondestructive examining technique, many other NDT methods require noticeable involvement to understand pictures obtained while carrying out the evaluation. For instance, transmission evaluation using noticeable red or neon dye depends on the inspector's ability to creatively identify surface signs. Magnetic compound evaluation drops into the same category of noticeable and neon evaluation techniques and radiography depends on the interpreter's noticeable verdict of the radiographic image, which is either on film or on a video observe.
Discovering state-of-the-art visible examination techniques for market uses is becoming very important in various areas for better QC and information purchase along with information research. These types of techniques are a perfect device to have so you can management as well as check the in-sight perspective and commercial techniques on the manufacturer ground. These innovative techniques are looking for an extensive use in both technological as well as in the commercial group for servicing of the features or inspection of components and equipment. Nondestructive Testing is a selection of various analysis methods which are used in market and technology for analyzing the qualities of a element, content or program. These methods have to create sure that there should not be any harm to the content being examined. This is because of the purpose that the products do not get customized while methods are conducted on them. The methods are extremely useful and conducted by professionals and qualified professionals. They can preserve a lot of time and initiatives invested on item assessment, analysis and problem solving.
Visual Inspection is one of the most commonly used Non-Destructive Testing methods for the recognition of discontinuities before they cause major problems, e.g. inadequate welding, area problems, deterioration sets, general condition, deterioration, obstructions and foreign materials. It means the inspection of equipment and components using a mixture of human feelings such as perspective, hearing, touch and fragrance. Visual Inspection is sometimes carried out together with devices such as a low power magnifier, boroscopes, fiberscopes, video borescopes, camera techniques and automatic spider techniques.
The more common types of visible examination brands can be found on electric gadgets. This convenient equipment analyze brands, or PAT brands, expose the position of a system as to its safe utilization as well as the recognition number and the schedules of the present examination along with the next suggested examination. PAT brands come in a wide range of styles and components which allows for a greater independence of program to the various elements of an electric system, such as routine forums and cable many. Of course, other sectors are required to exist the protection position of their particular products and gadgets. The development market, the food produce and submission market, and the various technological and medical sectors make use of visible examination brands as well. Safety risks, health issues, and biohazards related to technology and medication demand that the products and equipment of produce, submission, and convenience engaged in these sectors show their protection status and any potential threat they may existing to the public and the surroundings.
While direct noticeable evaluation is the most common nondestructive examining technique, many other NDT methods require noticeable involvement to understand pictures obtained while carrying out the evaluation. For instance, transmission evaluation using noticeable red or neon dye depends on the inspector's ability to creatively identify surface signs. Magnetic compound evaluation drops into the same category of noticeable and neon evaluation techniques and radiography depends on the interpreter's noticeable verdict of the radiographic image, which is either on film or on a video observe.
Portable Hardness Testing
Hardness is a material’s resistance to penetration. In general, an indenter is pressed into the surface of the material to be tested under a specific load for a definite time interval, and a measurement is made of the size or depth of the indentation.
Hardness properties include such varied attributes as resistance to abrasives, resistance to plastic deformation, high modulus of elasticity, high yield point, high strength, absence of elastic damping, brittleness or lack of ductility.
Hardness is not a fundamental property of a material, but a response to a particular test method. Basically hardness values are arbitrary, and there are no absolute standards for hardness. Hardness has no quantitative value, except in terms of a given load applied in a specific, reproducible manner and with a specified indenter shape.
Some Hardness Testing Methods are
Hardness properties include such varied attributes as resistance to abrasives, resistance to plastic deformation, high modulus of elasticity, high yield point, high strength, absence of elastic damping, brittleness or lack of ductility.
Hardness is not a fundamental property of a material, but a response to a particular test method. Basically hardness values are arbitrary, and there are no absolute standards for hardness. Hardness has no quantitative value, except in terms of a given load applied in a specific, reproducible manner and with a specified indenter shape.
Some Hardness Testing Methods are
- Rockwell Hardness Test
- Rockwell Superficial Hardness Test
- Brinell Hardness Test
- Vickers Hardness Test
- Mohs Hardness Test
Rebound Hammer Testing
The rebound hammer can provide an estimate of compressive strength of the concrete according to IS:13311 (Part 2). It is a non destructive testing device, which is used on finished concrete structures, such as precast concrete septic tanks. However strict procedures must be followed if the test results are to have any validity.
The device consists of a plunger rod and an internal spring loaded steel hammer and a latching mechanism. When the extended plunger rod is pushed against a hard surface, the spring connecting the hammer is stretched and when pushed to an internal limit, the latch is released causing the energy stored in the stretched spring to propel the hammer against the plunger tip. The hammer strikes the shoulder of the plunger rod and rebounds a certain distance.
The device consists of a plunger rod and an internal spring loaded steel hammer and a latching mechanism. When the extended plunger rod is pushed against a hard surface, the spring connecting the hammer is stretched and when pushed to an internal limit, the latch is released causing the energy stored in the stretched spring to propel the hammer against the plunger tip. The hammer strikes the shoulder of the plunger rod and rebounds a certain distance.
Ultrasonic Investigation
Ultrasonic testing is completely nondestructive and safe, and it is a well established test method in many basic manufacturing, process, and service industries, especially in applications involving welds and structural metals. SIGMA TEST & RESEARCH CENTER facilitates Ultrasonic Investigation.
Advantages of Ultrasonic Investigation :
High sensitivity to both surface and subsurface discontinuities, permitting the detection of extremely small flaws.
Greater accuracy than other nondestructive methods in determining the depth of internal flaws and the thickness of parts with parallel surfaces.
Nonhazardous to operations or to nearby personnel and has no effect on equipment and materials in the vicinity.
Capable of portable or highly automated operation.
The depth of penetration for flaw detection or measurement is superior to other NDT methods.
Only single-sided access is needed when the pulse-echo technique is used.
It is highly accurate in determining reflector position and estimating size and shape.
Minimal part preparation is required.
Electronic equipment provides instantaneous results.
Detailed images can be produced with automated systems.
It has other uses, such as thickness measurement, in addition to flaw detection.
Advantages of Ultrasonic Investigation :
High sensitivity to both surface and subsurface discontinuities, permitting the detection of extremely small flaws.
Greater accuracy than other nondestructive methods in determining the depth of internal flaws and the thickness of parts with parallel surfaces.
Nonhazardous to operations or to nearby personnel and has no effect on equipment and materials in the vicinity.
Capable of portable or highly automated operation.
The depth of penetration for flaw detection or measurement is superior to other NDT methods.
Only single-sided access is needed when the pulse-echo technique is used.
It is highly accurate in determining reflector position and estimating size and shape.
Minimal part preparation is required.
Electronic equipment provides instantaneous results.
Detailed images can be produced with automated systems.
It has other uses, such as thickness measurement, in addition to flaw detection.
Visual Inspection
Visual Inspection is one of the most widely used Non-Destructive Testing methods for the detection of discontinuities before they cause major problems, e.g. poor welding, surface defects, corrosion pits, general condition, degradation, blockages and foreign materials.Visual Inspection means the inspection of equipment and structures using a combination of human senses such as vision, hearing, touch and smell. Visual Inspection is sometimes carried out in conjunction with devices such as a low power magnifying glass, boroscopes, fiberscopes, digital video borescopes, camera systems and robotic crawler systems.
SIGMA TEST & RESEARCH CENTER is expert in porviding Non-Destructive Testing and facilitates Visual Inspection.
SIGMA TEST & RESEARCH CENTER is expert in porviding Non-Destructive Testing and facilitates Visual Inspection.
Core Cutting Test of Concrete
The strength of concrete measured by tests of cores is affected by the amount and distribution of moisture in the specimen at the time of test. There is no standard procedure to condition a specimen that will ensure that, at the time of test, it will be in the identical moisture condition as concrete in the structure.
The moisture conditioning procedures in this test method are intended to provide reproducible moisture conditions that minimize within laboratory and between laboratory variations and to reduce the effects of moisture introduced during specimen preparation. When cores are obtained from structures, the location of coring is determined based on specific conditions. SIGMA TEST & RESEARCH CENTRE provides Core Cutting Test of Concrete.
The moisture conditioning procedures in this test method are intended to provide reproducible moisture conditions that minimize within laboratory and between laboratory variations and to reduce the effects of moisture introduced during specimen preparation. When cores are obtained from structures, the location of coring is determined based on specific conditions. SIGMA TEST & RESEARCH CENTRE provides Core Cutting Test of Concrete.
Dye Penetration
Dye penetration is a non-destructive method which is used to detect surface breaking discontinuities in metals, plastics and ceramics. The test is performed by cleaning the test surface thoroughly and then applying the penetrant followed by the application of developer. The developer assists to draw penetrate out from the surface breaking the discontinuities.
The flaws can be recognized regardless of the size, configuration, internal structure and chemical composition of the surface area to be tested. Liquid penetrant can seep into various types of minute surface openings by capillary action. The process is well suited for various types of surface like cracks, laps, porosity, shrinkage areas, lamination and similar discontinuities in castings, forgings and welds.STRC, performs the tests in accordance with the industry standards which is well acknowledged by the users.SIGMA TEST & RESEARCH CENTRE performs Dye Penetration.
The flaws can be recognized regardless of the size, configuration, internal structure and chemical composition of the surface area to be tested. Liquid penetrant can seep into various types of minute surface openings by capillary action. The process is well suited for various types of surface like cracks, laps, porosity, shrinkage areas, lamination and similar discontinuities in castings, forgings and welds.STRC, performs the tests in accordance with the industry standards which is well acknowledged by the users.SIGMA TEST & RESEARCH CENTRE performs Dye Penetration.
Rebound Hammer Testing
Rebound hammer test is conducted to find out the compressive strength of concrete by using rebound hammer. The rebound of an elastic mass depends upon the hardness of the surface when it strikes. When the plunger of rebound hammer is pressed against the surface of the concrete, the pring controlled mass rebounds and the extent of such a rebound depends upon the surface hardness of the concrete.SIGMA TEST & RESEARCH CENTER performs Rebound Hammer Testing.
Portable Hardness
Hardness is a material's resistance to penetration. In general, an indenter is pressed into the surface of the material to be tested under a specific load for a definite time interval, and a measurement is made of the size or depth of the indentation.
Hardness properties include such varied attributes as resistance to abrasives, resistance to plastic deformation, high modulus of elasticity, high yield point, high strength, absence of elastic damping, brittleness or lack of ductility.
Some Hardness Testing Methods are :
Rockwell Hardness Test
Rockwell Superficial Hardness Test
Brinell Hardness Test
Vickers Hardness Test
Mohs Hardness Test
Hardness properties include such varied attributes as resistance to abrasives, resistance to plastic deformation, high modulus of elasticity, high yield point, high strength, absence of elastic damping, brittleness or lack of ductility.
Some Hardness Testing Methods are :
Rockwell Hardness Test
Rockwell Superficial Hardness Test
Brinell Hardness Test
Vickers Hardness Test
Mohs Hardness Test
Non Destructive Testing Lab
Nondestructive testing or Non-destructive testing (NDT) is a wide group of analysis techniques used in science and industry to evaluate the properties of a material, component surface & subsurface without causing damage or effect to their future performance or properties. Non-destructive testing is used to detect abnormalities in physical, chemical or electrical characteristics.
STRC's dedicated NDT lab and certified technicians are capable to fulfill your entire industrial and structural requirement.
STRC's dedicated NDT lab and certified technicians are capable to fulfill your entire industrial and structural requirement.
Visual Inspection
Visual Inspection is one of the most widely used Non-Destructive Testing methods for the detection of discontinuities before they cause major problems, e.g. poor welding, surface defects, corrosion pits, general condition, degradation, blockages and foreign materials.Visual Inspection means the inspection of equipment and structures using a combination of human senses such as vision, hearing, touch and smell. Visual Inspection is sometimes carried out in conjunction with devices such as a low power magnifying glass, boroscopes, fiberscopes, digital video borescopes, camera systems and robotic crawler systems.
SIGMA TEST & RESEARCH CENTER is expert in providing Non-Destructive Testing and facilitates Visual Inspection.
SIGMA TEST & RESEARCH CENTER is expert in providing Non-Destructive Testing and facilitates Visual Inspection.
Core Cutting Test of Concrete
The strength of concrete measured by tests of cores is affected by the amount and distribution of moisture in the specimen at the time of test. There is no standard procedure to condition a specimen that will ensure that, at the time of test, it will be in the identical moisture condition as concrete in the structure.
The moisture conditioning procedures in this test method are intended to provide reproducible moisture conditions that minimize within laboratory and between laboratory variations and to reduce the effects of moisture introduced during specimen preparation. When cores are obtained from structures, the location of coring is determined based on specific conditions.
SIGMA TEST & RESEARCH CENTER provides Core Cutting Test of Concrete.
The moisture conditioning procedures in this test method are intended to provide reproducible moisture conditions that minimize within laboratory and between laboratory variations and to reduce the effects of moisture introduced during specimen preparation. When cores are obtained from structures, the location of coring is determined based on specific conditions.
SIGMA TEST & RESEARCH CENTER provides Core Cutting Test of Concrete.
Dye Penetration
Dye penetration is a non-destructive method which is used to detect surface breaking discontinuities in metals, plastics and ceramics. The test is performed by cleaning the test surface thoroughly and then applying the penetrant followed by the application of developer. The developer assists to draw penetrant out from the surface breaking the discontinuities.
The flaws can be recognized regardless of the size, configuration, internal structure and chemical composition of the surface area to be tested. Liquid penetrant can seep into various types of minute surface openings by capillary action. The process is well suited for various types of surface like cracks, laps, porosity, shrinkage areas, lamination and similar discontinuities in castings, forgings and welds.STRC, performs the tests in accordance with the industry standards which is well acknowledged by the users.
SIGMA TEST & RESEARCH CENTER performs Dye Penetration.
The flaws can be recognized regardless of the size, configuration, internal structure and chemical composition of the surface area to be tested. Liquid penetrant can seep into various types of minute surface openings by capillary action. The process is well suited for various types of surface like cracks, laps, porosity, shrinkage areas, lamination and similar discontinuities in castings, forgings and welds.STRC, performs the tests in accordance with the industry standards which is well acknowledged by the users.
SIGMA TEST & RESEARCH CENTER performs Dye Penetration.
Dye Penetration
Dye penetration is a non-destructive method which is used to detect surface breaking discontinuities in metals, plastics and ceramics. The test is performed by cleaning the test surface thoroughly and then applying the penetrant followed by the application of developer. The developer assists to draw penetrant out from the surface breaking the discontinuities.
The flaws can be recognized regardless of the size, configuration, internal structure and chemical composition of the surface area to be tested. Liquid penetrant can seep into various types of minute surface openings by capillary action. The process is well suited for various types of surface like cracks, laps, porosity, shrinkage areas, lamination and similar discontinuities in castings, forgings and welds.STRC, performs the tests in accordance with the industry standards which is well acknowledged by the users.
SIGMA TEST & RESEARCH CENTER performs Dye Penetration.
The flaws can be recognized regardless of the size, configuration, internal structure and chemical composition of the surface area to be tested. Liquid penetrant can seep into various types of minute surface openings by capillary action. The process is well suited for various types of surface like cracks, laps, porosity, shrinkage areas, lamination and similar discontinuities in castings, forgings and welds.STRC, performs the tests in accordance with the industry standards which is well acknowledged by the users.
SIGMA TEST & RESEARCH CENTER performs Dye Penetration.
Non Destructive Testing Lab
Nondestructive testing or Non-destructive testing (NDT) is a wide group of analysis techniques used in science and industry to evaluate the properties of a material, component surface & subsurface without causing damage or effect to their future performance or properties. Non-destructive testing is used to detect abnormalities in physical, chemical or electrical characteristics.
STRC's dedicated NDT lab and certified technicians are capable to fulfill your entire industrial and structural requirement.
STRC's dedicated NDT lab and certified technicians are capable to fulfill your entire industrial and structural requirement.
Portable Hardness
Hardness is a material's resistance to penetration. In general, an indenter is pressed into the surface of the material to be tested under a specific load for a definite time interval, and a measurement is made of the size or depth of the indentation.
Hardness properties include such varied attributes as resistance to abrasives, resistance to plastic deformation, high modulus of elasticity, high yield point, high strength, absence of elastic damping, brittleness or lack of ductility.
Some Hardness Testing Methods are :
Rockwell Hardness Test
Rockwell Superficial Hardness Test
Brinell Hardness Test
Vickers Hardness Test
Mohs Hardness Test
Ultrasonic Investigation
SIGMA TEST & RESEARCH CENTER is laboratory testing company in Delhi, which is offering all kinds laboratory testing services and also it is accredited by NABL, FSSAI,USFDA and ISO.
Visual Inspection
Visual Inspection is sometimes carried out in conjunction with devices such as a low power magnifying glass, boroscopes, fiberscopes, digital video borescopes, camera systems and robotic crawler systems.
SIGMA TEST & RESEARCH CENTER is expert in providing Non-Destructive Testing and facilitates Visual Inspection.
Non Destructive Testing lab in Delhi
Nondestructive testing has been defined as comprising those test methods used to examine an object, material or system without impairing its future usefulness. Nondestructive testing is used to investigate the material integrity of the test object. Non-destructive testing is used to detect abnormalities in physical, chemical or electrical characteristics.
Visual Inspection is one of the most widely used Non-Destructive Testing methods for the detection of discontinuities before they cause major problems, e.g. poor welding, surface defects, corrosion pits, general condition, degradation, blockages and foreign materials.Visual Inspection
Core Cutting
This method covers obtaining, preparing, and testing cores drilled from concrete for length or compressive strength determinations. This test method provides standardized procedures for obtaining and testing specimens to determine the compressive strength of in-place concrete as per the standards of IS: 456.
The device consists of a plunger rod and an internal spring loaded steel hammer and a latching mechanism. When the extended plunger rod is pushed against a hard surface, the spring connecting the hammer is stretched and when pushed to an internal limit, the latch is released causing the energy stored in the stretched spring to propel the hammer against the plunger tip. The hammer strikes the shoulder of the plunger rod and rebounds a certain distance.