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Proceedings of the 17th International Conference on Manufacturing Systems – ICMaS
Published by Editura Academiei Române, ISSN 1842-3183
Volume No. 3, 2008
University POLITEHNICA of Bucharest, Machine and Manufacturing Systems Department
Bucharest, Romania, 13-14 November, 2008
pp. 275-278
SENSORLESS MONITORING OF CFRP DRILLING
Mehdi CHERIF, Pierrick LEGRAND
Abstract: For the final assembly of aerostructure, drilling still remains a key operation. Drill wear is a serious concern in the CFRP drilling process because worn tool cause delamination, excessive roughness and uncut fiber at the exit of the hole. This paper presents signal analysis using wavelet approach for sensorless drilling monitoring based on spindle and feed current. The proposed methodology is tested on the drilling process of T800 M21 prepreg carbon with f6.35mm carbide drill. The results point out the performance of the feed current proposed indicator rather than the spindle current for the drilling process monitoring of CFRP material.
Key words: CFRP drilling, tool wear, sensorless monitoring, signal analysis, wavelet.
Authors:
Mehdi CHERIF
LGM2B, University of Bordeaux 1, France
E-mail: mehdi.cherif@u-bordeaux1.fr
Pierrick Legrand
IMB, Institut de mathématiques de Bordeaux, UMR CNRS 5251, University of Bordeaux 2, France,
E-mail: Legrand@sm.u-bordeaux2.fr
Electronic mail: orgcom@icmas.eu / General Information: http://www.edition2009.icmas.eu/