Archives > Volume 12 | Number 3 | September 2017 | > pp 221–232
Advances in Production Engineering & Management
Volume 12 | Number 3 | September 2017 | pp 221–232
Diagnostic of peripheral longitudinal grinding by using acoustic emission signal
Zylka, L.; Burek, J.; Mazur, D.
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A B S T R A C T
Grinding burn is one of the well-known problems in grinding processes. The phenomenon of burns causes permanent damage to the ground surface. Therefore, there is a need of monitoring the grinding processes in order to prevent surface damage of a workpiece. This paper presents a method of diagnosing grinding wheel wear with the use of acoustic emission signal generated during grinding. The method aims to detect the occurrence of burn in the surface layer of ground workpieces, and, thus, to replace costly and troublesome surface layer control methods performed after grinding. Experimental research of the grinding process together with the control of surface layer condition was conducted by means of the nital etching method. A band analysis of acoustic emission signal was completed and the influence of the grinding burns phenomenon on the signal amplitude in the range of low frequencies was presented. A boundary value of the AE describing the appearance of grinding burns was determined. Moreover, RMS value of acoustic emission signal was analysed, and the influence of grinding wheel wear on the signal variations was determined. A new parameter was proposed in order to determine the end of grinding wheel life-time. A boundary value of this AE parameter, which indicates the excessive wear of grinding wheel was determined.
A R T I C L E I N F O
Keywords • Grinding, Grinding burns, Grinding wheel, Diagnostic, Acoustic emission
Corresponding author • Zylka, L.
Article history • Received 5 May 2017, Revised 6 July 2017, Accepted 10 July 2017
Published on-line • 28 July 2017
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