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Non-destructive testing is used when materials cannot be destroyed during testing. It includes techniques like imaging, ultrasound, and chemical sniffing to evaluate materials without changing them. A detailed report is generated at the end of testing. Companies offer non-destructive testing at varying rates. Impartial third parties are needed for legal matters.
Non-destructive testing is a form of materials testing used when the materials under test cannot be destroyed during the testing process. This type of testing is used when permanently changing the material during testing is not an option for any number of reasons, from safety to cost. In some cases, it may reveal the need for more thorough testing methods, some of which could cause permanent alteration or damage. Switching to non-destructive testing earlier can save money and increase the efficiency of a project.
In non-destructive testing, a wide variety of techniques are available to evaluate a material without changing it. Imaging studies are a common technique. X-rays and other imaging methods allow people to look inside a material for problems like cracks and flaws without causing damage. Ultrasound is another popular technique for both imaging and stress testing, as changes in sound waves can reveal changes in the integrity of the test object, highlighting problems such as bubbles and cracks within the material.
People can also use techniques like covering something with a piercing and then imagining it. If the material is sound, the penetrant will lie on the surface. If there are cracks, holes and other problems, it can seep in, spreading through the material. This will not endanger the substance and the penetrant can be easily removed after testing. Nondestructive testing also includes standard tasks like weighing and measuring material, gathering information about how light is refracted, and using chemical sniffing to learn more about its composition.
At the end of the non-destructive tests, a detailed report will be generated to provide information on the material under study. This report can be used for everything from forensic testimony in court about the circumstances of an accident to supporting documentation for a manufacturer’s patent application for a newly developed material. The documentation will discuss any flaws or deficiencies in the test so that someone evaluating the test results can identify areas of concern.
Numerous companies offer non-destructive testing of materials, at rates that vary depending on the nature of the material and the amount of testing required. Some companies do their own testing in-house first and can start with non-destructive methods to gather background information without having to destroy the objects they are testing. Typically, individuals intending to use nondestructive testing results to support government approval applications, court cases, or other legal matters will need testing performed by an impartial third party.
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