Nondestructive testing (NDT) is the process of inspecting, testing, or evaluating materials, components or assemblies without causing any damage in the product. In other words, when the inspection or test is completed the product can still be used. Today modern NDT is used in product evaluation, manufacturing and in-service inspections to ensure product integrity and reliability, to control manufacturing processes, lower production costs and to maintain a uniform quality level. As NDT in no way alters the part or structure under inspection, it is an extremely useful technique that can lead to cost and time savings. During product evaluation and manufacturing, NDT is used to ensure the quality of materials and joining processes during the fabrication, and in-service NDT inspections are used to ensure that the products in use continue to have the integrity necessary to ensure their usefulness and the safety of the public.
Current NDT methods include: Acoustic Emission Testing (AE), Electromagnetic Testing (ET), Guided Wave Testing (GW), Ground Penetrating Radar (GPR), Laser Testing Methods (LM), Leak Testing (LT), Magnetic Flux Leakage (MFL), Microwave Testing, Liquid Penetrant Testing (PT), Magnetic Particle Testing (MT), Neutron Radiographic Testing (NR), Radiographic Testing (RT), Thermal/Infrared Testing (IR), Ultrasonic Testing (UT), Vibration Analysis (VA) and Visual Testing (VT). Test method names often refer to the type of penetrating medium or the equipment used to perform that test.
NDT plays a crucial role in everyday life and is necessary to assure safety and reliability. Typical examples are found in aircraft, motor vehicles, pipelines, bridges, trains, power stations, buildings and oil platforms. In contrast to NDT, other tests are destructive are therefore done on a limited number of samples, rather than on the parts actually being put into service. These destructive tests are often used to determine the physical properties of materials such as impact resistance, ductility, yield and ultimate tensile strength, fracture toughness and fatigue strength, but discontinuities and differences in material characteristics are more effectively found by NDT.
Matexcel utilizes NDT as a quality assurance management tool which can give our customers impressive results when applied to product evaluations, asset management and fault identification and repair. Our experienced scientists have a well understanding of the various methods available, their capabilities and limitations, knowledge of the relevant standards and specifications for performing the tests. The technical assurance delivered by Matexcel minimizes the level of risk to the assets in question as well as helping to maintain your productivity.
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