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2축 피로시험에서 혼합모드(Mode Ⅰ + Ⅱ) 구현에 관한 연구
최성대(Seong-Dae Choi),정선환(Seun-Hwan Cheong),김잠규(Jam-Kyu Kim),김기만(Gi-Man Kim),최명수(Myong-Su Choi),김우재(Woo-Jae Kim) 한국기계가공학회 2008 한국기계가공학회 춘추계학술대회 논문집 Vol.2008 No.-
The wavelet transform is a popular tool for studying intermittent and localized phenomena in signals. In this study the wavelet transform of cutting force signals was conducted for the detection of a tool failure in turning process. We used the Daubechies wavelet analyzing function to detect a sudden change in cutting signal level. A preliminary stepped workpiece which had intentionally a hard condition was cut by the inserted cermet tool and a tool dynamometer obtained cutting force signals. From the results of the wavelet transform, the obtained signals were divided into approximation terms and detailed terms.