John Crane UK Limited

Flexibox Limited

Peter Derek Carlisle

Klaus-Dieter Meck

Derek E Cadden

An apparatus for detecting fatigue induced failure of an assembly having a single flexible element or a series of flexible elements stacked in juxtaposed engagement, for transmitting power from one component to another, the assembly having a cyclic operating speed frequency that includes at least one sensor mounted in proximity to said assembly, the sensor providing an analog signal corresponding to an airborne acoustic signal emitted by the assembly, means for amplifying the analog signal, filter means to reduce background noise from the analog signal, an analog to digital converter for converting the analog signals to a digital signal, means for sampling the digital signals in respect of the operating speed frequency of the assembly and means for analyzing the digital signals and providing an output upon the occurrence of one or more digital signal spikes in an operating cycle.

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Manchester, United Kingdom

Peter Derek Carlisle