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Summary
An acoustic emission (AE) technique is developed for monitoring hard particle impact for eventual use as an on-line erosion rate sensor. In a preliminary study the elastic impact of bronze and glass particles (size range 50 ¿̐ư 100 ?m, velocities 2.5 ¿̐ư 7.1 m/s) on a aluminium target was investigated. The plate Green's function and system response were deconvolved from AE signals due to impact at epicentre. The velocity and time dependence and the absolute values of the peak impact force and impact time thus obtained compared well with predicted theoretical values. The quantitative technique developed was also used to size the particles, giving the correct mean particle size to within 4%. This fundamental approach provides a framework for later extension to plastic particle impact.
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Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1991. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
