Materials testing has assumed a lot of significance with the advent of new and better technologies in recent years. Earlier manufacturer used to suffer a lot of losses due to non availability of material testing techniques. Often this loss resulted in sufferings for the mankind. However, now with rapid advancements in technology the materials testing techniques are available freely. This testing is used to detect any microscopic and hidden defects or faults which are often inherent in a material and causes the whole process to fail. Some of the popular techniques of material testing are magnetic testing, metallography, liquid penetrent test, heat resistance test, Charpy Impact Testing, Visual testing, Bend Testing, Tensile Testing, Radiographic testing, Hardness Testing, Positive material identification, Salt Spray Testing, magnetic particle testing and ultrasonic testing etc.
Magnetic testing is a technique of material testing used to detect sub-surface defects in a material. Magnetic testing methods are frequently used to detect corrosion and pitting in steel structures. As this method requires no direct contact with the material to be tested therefore, these methods are much preferred. The material to be tested has to be magnetized and then those areas are detected which do not show flux lines indicating corrosion. Another magnetic test method is the In-line Inspection Tool or ILI which causes the magnetic probe to travel inside a pipeline. The ILI detects corrosion and pitting making use of the magnetic field. Alternating Current Field Measurement or the ACFM can be used on ferrous as well as non-ferrous materials.
Magnetic testing is a technique of material testing used to detect sub-surface defects in a material. Magnetic testing methods are frequently used to detect corrosion and pitting in steel structures. As this method requires no direct contact with the material to be tested therefore, these methods are much preferred. The material to be tested has to be magnetized and then those areas are detected which do not show flux lines indicating corrosion. Another magnetic test method is the In-line Inspection Tool or ILI which causes the magnetic probe to travel inside a pipeline. The ILI detects corrosion and pitting making use of the magnetic field. Alternating Current Field Measurement or the ACFM can be used on ferrous as well as non-ferrous materials.
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