Mechanical and thermal behaviours of grinding acoustic emission

Xun Chen, James Griffin and Qiang Liu

International Journal of Manufacturing Technology and Management, 2007, vol. 12, issue 1/2/3, 184-199

Abstract: Grinding burn is a common phenomenon of thermal damage that has been one of the main constraints in grinding in respect of high efficiency and quality. Many attempts have tried to utilise Acoustic Emission (AE) technique for identifying grinding burn. However, the AE features of grinding burn are relatively weak and easily merged by other AE sources. This paper presents an investigation of the AE features in terms of grinding mechanical and thermal behaviour. A series tests of single grit scratching, tension testing and laser irradiation were carried out to simulate grinding process in order to separate the mechanical and thermal characteristics of grinding acoustic emission. By means of the Wavelet Packet Transform (WPT), AE features that represent grinding burn temperature can successfully be extracted. These AE footprint features can provide a firm foundation for monitoring and analysing grinding burn.

Keywords: grinding burn; acoustic emission; AE; feature extraction; wavelet packet transforms; WPT; mechanical behaviour; thermal behaviour; thermal damage; simulation; single grit scratching; tension testing; laser irradiation; monitoring. (search for similar items in EconPapers)
Date: 2007
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Citations: View citations in EconPapers (1)

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