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However, although viscous damping governs the physics of metal deformation, it is concluded that the detected high frequency acoustic emission (AE) signals arising from metal cutting can only be generated owing to the interaction between moving dislocations and obstacles. This would appear to be the reason why the amplitude of the AE signal cannot be directly related to the cutting power, since it arises from a different generation mechanism. As a result, a qualitative model relating the AE to basic deformation parameters was derived, in which the power of the AE is expected to increase with strain and strain rate, but to decrease with temperature. In addition, the frequency content of the AE is expected to increase with strain rate, to decrease with temperature, and to remain unchanged with strain. These results were validated against data from experimental cutting tests and seem to suggest that the generation of the AE during metal cutting is very heavily dependent on dislocation motion. <\/jats:p>","DOI":"10.1243\/09544054jem1448","type":"journal-article","created":{"date-parts":[[2009,8,7]],"date-time":"2009-08-07T01:03:48Z","timestamp":1249607028000},"page":"1507-1518","source":"Crossref","is-referenced-by-count":4,"title":["Investigation of the role of dislocation motion in the generation of acoustic emission from metal cutting"],"prefix":"10.1177","volume":"223","author":[{"given":"A J M M","family":"Ara\u00fajo","sequence":"first","affiliation":[{"name":"Universidade de Aveiro, Campo Universit\u00e1rio de Santiago, Aveiro, Portugal"}]},{"given":"S J","family":"Wilcox","sequence":"additional","affiliation":[{"name":"Department of Engineering, University of Glamorgan, Pontypridd, UK"}]},{"given":"R L","family":"Reuben","sequence":"additional","affiliation":[{"name":"School of Engineering and Physical Sciences, Heriot-Watt University, Riccarton, UK"}]}],"member":"179","published-online":{"date-parts":[[2009,7,16]]},"reference":[{"key":"bibr1-09544054JEM1448","doi-asserted-by":"crossref","unstructured":"Inasaki I., Yonetsu S. \u2018In-progress detection of cutting tool damage by acoustic emission measurement.\u2019 In Proceedings of the 22nd International Machine Tool Design and Research Conference, UMIST, Manchester, September 1981, pp. 261\u2013268.","DOI":"10.1007\/978-1-349-06281-2_33"},{"key":"bibr2-09544054JEM1448","unstructured":"Lan M. S., Dornfeld D. A. \u2018Experimental studies of tool wear via acoustic emission analysis.\u2019 In Proceedings of the 10th North American Manufacturing Research Conference, McMaster University, Hamilton, Ontario, May 1982, pp. 305\u2013311."},{"key":"bibr3-09544054JEM1448","unstructured":"Messaritis V., Borthwick W. K. D. \u2018Processing acoustic emission signal data for characterising cutting tool wear and chip management.\u2019 In Proceedings of the 1st International Conference on Computer-aided production engineering, Edinburgh, April 1986, pp. 261\u2013268, (IMechE)."},{"key":"bibr4-09544054JEM1448","unstructured":"Naerheim Y., Lan M. S. \u2018Acoustic emission reveals information about the metal cutting process and tool wear.\u2019 In Proceedings of the 16th North American Manufacturing Research Conference, University of Illinois, USA, May 1988, pp. 240\u2013244."},{"key":"bibr5-09544054JEM1448","doi-asserted-by":"publisher","DOI":"10.1115\/1.2899576"},{"key":"bibr6-09544054JEM1448","doi-asserted-by":"publisher","DOI":"10.1016\/S0007-8506(07)61291-8"},{"key":"bibr7-09544054JEM1448","doi-asserted-by":"publisher","DOI":"10.1115\/1.3225684"},{"key":"bibr8-09544054JEM1448","doi-asserted-by":"publisher","DOI":"10.1115\/1.3187123"},{"key":"bibr9-09544054JEM1448","doi-asserted-by":"publisher","DOI":"10.1016\/S0924-0136(03)00227-9"},{"key":"bibr10-09544054JEM1448","unstructured":"Dornfeld D. A., Lan M. S. \u2018Chip form detection using acoustic emission.\u2019 In Proceedings of the 11th North American Manufacturing Research Conference, University of Wisconsin\u2013Madison, USA, May 1983, pp. 386\u2013389."},{"key":"bibr11-09544054JEM1448","doi-asserted-by":"publisher","DOI":"10.1016\/S0007-8506(07)61382-1"},{"key":"bibr12-09544054JEM1448","doi-asserted-by":"publisher","DOI":"10.1007\/BF02833673"},{"key":"bibr13-09544054JEM1448","doi-asserted-by":"publisher","DOI":"10.1016\/j.ymssp.2003.12.006"},{"key":"bibr14-09544054JEM1448","first-page":"1973","volume":"40","author":"Snr Dimla D. E.","year":"2000","journal-title":"Int. J. Mach. Tools Mfg"},{"key":"bibr15-09544054JEM1448","doi-asserted-by":"publisher","DOI":"10.1016\/S0890-6955(01)00108-0"},{"volume-title":"Acoustic emission: Techniques and applications","year":"1974","author":"Spanner J. 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