Assessment of Tool Wear in Milling Using Acoustic Emission Detected by a Fiber-Optic Interferometer

[+] Author and Article Information
T. A. Carolan, D. P. Hand, J. S. Barton, J. D. C. Jones

Department of Physics, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, U.K.

P. Wilkinson, R. L. Reuben

Department of Mechanical and Chemical Engineering, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, U.K.

J. Manuf. Sci. Eng 118(3), 428-433 (Aug 01, 1996) (6 pages) doi:10.1115/1.2831048 History: Received August 01, 1993; Revised June 01, 1995; Online January 17, 2008


Acoustic emission (AE) has previously been shown to be a useful technique in monitoring the state of wear of cutting tools. The piezo-electric transducers conventionally used for AE detection are contacting devices with a limited bandwidth. This paper describes the use of a robust fiber optic interferometer for the in-process measurement of AE during the face milling of annealed En24 steel to provide tool wear information via analysis of the rms AE signal. The interferometer displayed an improved diagnostic capability over a conventional piezoelectric sensor due to its advantages of being non-contacting, broadband with a flat frequency response to displacement, and providing absolute calibration.

Copyright © 1996 by The American Society of Mechanical Engineers
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