Investigation of displacement fields in an abrasive waterjet drilling process: Part 1. Experimental measurements |
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Authors: | Z Guo M Ramulu |
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Institution: | (1) Light Sciences Corporation, 98027 Issaquah, WA;(2) Department of Mechanical Enginering, University of Washington, 98195 Seattle, WA |
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Abstract: | The transient state of displacement fields in the machining zone of a target material during abrasive waterjet impinging and drilling was investigated. A moiré interferometry experimental setup for recording displacement fields and a dynamometer for measuring the reaction force were developed. Whole fields of surface displacement fields and the reaction force of the ceramic and polycarbonate target materials were successfully recorded when the specimen was being pierced by high-pressure abrasive waterjet (AWJ). This paper demonstrates that bothu andv displacement fields of a workpiece during AWJ drilling can be recorded in real time and simultaneously by the moiré interferometry experimentation. The measured surface displacement distributions and the machining forces will be used to drive a finite element model in the second part of this investigation, in which the authors study the stress and strain state for the target material associated with the jet-materials interaction during the jet penetration process. |
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Keywords: | Abrasive waterjet drilling brittle materials moiré interferometry surface displacement measurement |
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