This paper presents a tool wear monitoring method in drilling process using cutting force signal. The kurtosis coefficient and the energy of a special frequency
A wear-resistant alloy(Ni-Cr)coating is precoated by thermal spraying on Al alloyand is remelted by a CO<sub>2</sub> laser.The study of the bonding between the re
A quick and valid method to determine preventive maintenance intervals is introducedin this paper.It applies the theory established by Barlow R.E.and Proschan F