PM Application with Acoustic Resonance Testing

摘要

Acoustic Resonance Testing (ART) provides an economic solution for line-integrated quality testing to manufacturers of powder-metallurgical parts. The technique convinces through a high degree of reliability, short measurement cycles for complete component testing and relatively small cost investment. Present organisational and technical demands to the operators can be fulfilled by engaged and available machine operators. Characteristic for the technique is a relatively elaborate preliminary examination of the natural vibrations, the implementation of a part specific test rig and series-accompanying measurements for system adjustment. The subsequent contribution summarises the basics of this technique. The characteristic of the MEDAV technology is that the adjustment of the test set-up is done automatically under application of statistical methods to unsorted series parts and the adaption of the abnormality limits. At the end, two practical examples of the CrackMaster~(TM)system technology are described that differ mainly in the mechanical implementation of the test rig.