TY - JOUR
T1 - Machined surface defects monitoring through VMD of acoustic emission signals
AU - Liu, Shuyao
AU - Wang, Xibin
AU - Liu, Zhibing
AU - Wang, Yong
AU - Chen, Hongtao
N1 - Publisher Copyright:
© 2022
PY - 2022/7
Y1 - 2022/7
N2 - Machined surface defects influence functional properties of the component, such as reducing carrying capacity and shortening fatigue life. This study collected the cutting force and the acoustic emission (AE) signals, analyzed the effect of shear and ploughing effect on the frequency of the AE signals in machining, built the relationship between the first-order mode components (IMF1) and the second-order mode components (IMF2) of AE signals and the shearing and ploughing process respectively through variational mode decomposition (VMD). A new parameter Er = (RMS2/RMS1)2 was proposed as the signal feature to monitor machined surface defects, which represented the ratio of specific ploughing energy and specific shear energy. The results showed that when Er was in the range of 0.03–0.05, the machined surface quality was good, once it was higher than 0.05, the ploughing effect between the flank face and the machined surface was severe, thereby causing machining-induced surface defects.
AB - Machined surface defects influence functional properties of the component, such as reducing carrying capacity and shortening fatigue life. This study collected the cutting force and the acoustic emission (AE) signals, analyzed the effect of shear and ploughing effect on the frequency of the AE signals in machining, built the relationship between the first-order mode components (IMF1) and the second-order mode components (IMF2) of AE signals and the shearing and ploughing process respectively through variational mode decomposition (VMD). A new parameter Er = (RMS2/RMS1)2 was proposed as the signal feature to monitor machined surface defects, which represented the ratio of specific ploughing energy and specific shear energy. The results showed that when Er was in the range of 0.03–0.05, the machined surface quality was good, once it was higher than 0.05, the ploughing effect between the flank face and the machined surface was severe, thereby causing machining-induced surface defects.
KW - AE signal
KW - Machined surface defect
KW - Monitoring
KW - VMD
UR - http://www.scopus.com/inward/record.url?scp=85130324513&partnerID=8YFLogxK
U2 - 10.1016/j.jmapro.2022.04.021
DO - 10.1016/j.jmapro.2022.04.021
M3 - Article
AN - SCOPUS:85130324513
SN - 1526-6125
VL - 79
SP - 587
EP - 599
JO - Journal of Manufacturing Processes
JF - Journal of Manufacturing Processes
ER -