What is an electromagnetic test?
Electromagnetic test is a class of non -destructive testing used to find defects in the object. Each type of test has a different application and methodology. All tests use electricity or magnetic fields, some of which use both. Depending on the specific type of testing used, the amount of electric current, which is reflected, refraction or otherwise executed through the piece is measured. Changes in the current or magnetic field, as it moves or around the tested object or around, point to possible deficiencies or defects. Testing the whirlpool will find a defect of a nearby surface of metal objects. However, the improvement in testing capabilities has resulted in a constantly developing number of electromagnetic test options. Other tests such as remote field testing, magnetic flow leak testing, wire testing and magnetic particles allow users to test defects in different materials, shapes and locations. Using electricity and magnetic fields, each type of electromagnetic test createsIn response to cracks, heat damage, corrosion or other shortcomings in a wide range of materials and environment.
In addition to detection of defects, the use of electricity in magnetic fields can also help determine other invisible properties of metal, ground and soft tissues. The results indicate the thickness of the material, electrical conductivity, the presence of foreign objects and other information. The purpose of any electromagnetic test is to provide the ability to collect information before starting expensive or unnecessary digging, spreading or surgery or ensuring safety produced by components.
Examples of many uses of different types of electromagnetic testing can be found in commercial construction and medical areas. For example, testing of pulse whirlpool pipes is used to determine the loss of metal without the need to detect the actual tube. This type of electromagnetic testing can be done from the markNo distance, if direct access to the pipeline is not practical.
When applying to metal storage tanks, aircraft tube and similar metal containers, an electromagnetic test, such as a magnetic flow leakage test, can locate damage to internal metal. Such tests use a magnetic field that passes through a test object and brings different results in areas of corrosion or reason. Tests of this nature can be carried out on a completed aircraft, on tanks already mounted for storage or during the manufacturing process.
Although it is usually used on metal test buildings, electromagnetic testing is also useful in medical applications, topographic research and specific specialized applications. For example, magnetic resonance imaging (MRI) is a type of electromagnetic test used to look inside the human body. Ground penetrating radar is a similar method of electromagnetic testing used to create a geophysical MAPy underground areas. The radar may feel buried objects and determine the subsurface conditions. Similarly, Barkhausen's noise analysis uses a magnetic field combined with noise signals to test ferromagnetic or naturally magnetic samples.