In comparison with the homogenization treatment without an electric field prior to the same solid solution and aging treatment, the homogenization treatment in
Two types of poppet valves were tested, one is a poppet with a sharp-edged seats, and the other is that with a chamfered seat. During the tests, the effects of
Presents feature wavelet packets(FWP)a new method of chatter feature extraction in milling process based on wavelet packets transform(WPF)and using vibration si