Good directivity, strong penetrating power, high sensitivity, few blind areas (the combination of sound wave emission angles can be used to minimize blind areas), low consumption (basically only use electricity, and a small amount Coupling agent).ĭefect display is not intuitive enough (non-professionals can’t understand it), surface preparation is required (good coupling is required), quantitative performance is not good. It is mainly for the detection of internal flaws. Utilizing the propagation, attenuation characteristics of sound waves in the medium and the reflection, refraction characteristics on the interface.įorged, rolled parts and other workpieces or materials with finer grains. Of course, the conclusions of non-destructive testing are not precise enough, and often it can only give the result of “yes”, which is difficult to be more precise. It is possible to perform repeated and full-coverage inspections on the measured object. Non-destructive testing is to measure the surface and internal parameters or performance of the tested object without destroying the physical and chemical properties and geometric integrity of the tested object.Ĭompared with “detection”, the more important thing is “non-destructive”. To get adequate railroad track inspection has become important. Therefore, the probability of rail damage is increasing.
As the fast development of high-speed rails and heavy-haul rails, the rails are being squeezed and impacted more and more. Railroad track inspection is the process of using non-destructive testing (NDT) methods to detect rails in a planned way to find and deal with flaws in railroad tracks that may lead to disastrous results. If the tracks crack, the trains may derail or turn over which will cause serious damage to people’s lives and property. In railroad transportation, railroad tracks support and lead the locomotives to move forward.
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