A novel fractal estimation methodology, that uses—for the first time in metal cutting literature—fractal properties of machining dynamics for online estimation of cutting tool flank wear, is presented. The fractal dimensions of the attractor of machining dynamics are extracted from a collection of sensor signals using a suite of signal processing methods comprising wavelet representation and signal separation, and are related to the instantaneous flank wear using a recurrent neural network. The performance of the resulting estimator, evaluated using actual experimental data, establishes our methodology to be viable for online flank wear estimation. This methodology is adequately generic for sensor-based prediction of gradual damage in mechanical systems, specifically manufacturing processes. [S0022-0434(00)02401-1]
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March 2000
Technical Papers
Fractal Estimation of Flank Wear in Turning
Satish T. S. Bukkapatnam, Assistant Professor of Industrial and Systems Engineering,,
Satish T. S. Bukkapatnam, Assistant Professor of Industrial and Systems Engineering,
University of Southern California, Los Angeles, CA 90089
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Soundar R. T. Kumara, Professor of Industrial and Manufacturing Engineering,,
Soundar R. T. Kumara, Professor of Industrial and Manufacturing Engineering,
Pennsylvania State University, University Park, PA 16802
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Akhlesh Lakhtakia, Professor of Engineering Science and Mechanics,
Akhlesh Lakhtakia, Professor of Engineering Science and Mechanics,
Pennsylvania State University, University Park, PA 16802
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Satish T. S. Bukkapatnam, Assistant Professor of Industrial and Systems Engineering,
University of Southern California, Los Angeles, CA 90089
Soundar R. T. Kumara, Professor of Industrial and Manufacturing Engineering,
Pennsylvania State University, University Park, PA 16802
Akhlesh Lakhtakia, Professor of Engineering Science and Mechanics,
Pennsylvania State University, University Park, PA 16802
Contributed by the Dynamic Systems and Control Division for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the Dynamic Systems and Control Division June 4, 1999. Associate Technical Editor: T. R. Kurfess.
J. Dyn. Sys., Meas., Control. Mar 2000, 122(1): 89-94 (6 pages)
Published Online: June 4, 1999
Article history
Received:
June 4, 1999
Citation
Bukkapatnam, S. T. S., Kumara, S. R. T., and Lakhtakia, A. (June 4, 1999). "Fractal Estimation of Flank Wear in Turning ." ASME. J. Dyn. Sys., Meas., Control. March 2000; 122(1): 89–94. https://doi.org/10.1115/1.482446
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