...) shapes (structures) surface structure wavelet transforms wavelet decomposition 3D surface decomposition multiple-scale surface features extraction Machined surfaces for sealing and similar applications in automotive powertrain manufacturing require increasingly stringent tolerances...

...Li Zhang; Charles B. Theurer; Robert X. Gao; David O. Kazmer A new signal-processing technique based on analytic wavelet transform has been developed for detecting and differentiating temporally overlapped ultrasonic pulse trains that carry spatially distributed pressure information across...

... 07 2004 fault diagnosis condition monitoring maintenance engineering regression analysis wavelet transforms lifts maximum likelihood estimation feature extraction Prognostics Logistic Regression Degradation Assessment Fault Modes Classification Considerable efforts...

... wavelet transforms filtering theory correlation methods A typical engineering surface consists of a range of spatial frequencies. The high frequency or short wavelength components are referred to as roughness, the medium frequencies as waviness and low frequency components as form 1...

... AND ENGINEERING . Manuscript received October 2000; Revised February 2002. Associate Editor: Y. Altintas. 01 October 2000 01 February 2002 04 03 2003 cutting machining machine theory machine control wavelet transforms maximum likelihood estimation fractals Chatter...

...Ya Wu; Philippe Escande; R. Du This paper introduces a new method for tool condition monitoring in transfer machining stations. The new method is developed based on a combination of wavelet transform, signal reconstruction, and the probability of threshold crossing. It consists of two parts...

... of AE signals is investigated. This investigation is motivated by the superiority of the wavelet transform over the Fourier transform in analyzing rapidly changing signals such as AE, in which high frequency components are to be studied with sharper time resolution than low frequency components...