Acoustic Resonance Testing: the upcoming volume-oriented NDT method
نویسندگان
چکیده
Acoustic sonic and ultrasonic resonance analysis is a new non-destructive testing technique that allows 100% testing of a wide range of test objects quickly and at low cost. After an impact, a specimen vibrates in certain characteristic modes and frequencies that can be measured by a microphone or laser vibrometer. Typical faults that can be detected are cracks, cavities, detached layers, material inconsistencies, hardness deviation and nodularity in iron castings. This test method supplements the volume oriented NDT methods and possesses some important advantages. RTE Akustik + Prueftechnik has developed the material test system SR20AT for inline testing in mass production. Applications for automotive safety components like brake callipers, sinter metal parts or airbag inner tubes are presented.
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