title: Application of wavelet packet entropy flow manifold learning in bearing factory inspection using the ultrasonic technique.
abstract: For decades, bearing factory quality evaluation has been a key problem and the methods used are always static tests. This paper investigates the use of piezoelectric ultrasonic transducers (PUT) as dynamic diagnostic tools and a relevant signal classification technique, wavelet packet entropy (WPEntropy) flow manifold learning, for the evaluation of bearing factory quality. The data were analyzed using wavelet packet entropy (WPEntropy) flow manifold learning. The results showed that the ultrasonic technique with WPEntropy flow manifold learning was able to detect different types of defects on the bearing components. The test method and the proposed technique are described and the different signals are analyzed and discussed.
authors.affiliation: School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China. chenxiaoguang2008@163.com.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Chen
authors.affiliation: School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China. liudan1978@mail.xjtu.edu.cn.
authors.forename: Dan
authors.initials: D
authors.lastname: Liu
authors.affiliation: School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China. ghxu@mail.xjtu.edu.cn.
authors.forename: Guanghua
authors.initials: G
authors.lastname: Xu
authors.affiliation: School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China. jiangkuosheng333@stu.xjtu.edu.cn.
authors.forename: Kuosheng
authors.initials: K
authors.lastname: Jiang
authors.affiliation: School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China. lianglin@mail.xjtu.edu.cn.
authors.forename: Lin
authors.initials: L
authors.lastname: Liang