The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2025
Filed:
Jun. 25, 2024
Jilin University, Changchun, CN;
Zhichao Ma, Changchun, CN;
Jiakai Li, Changchun, CN;
Chaofan Li, Changchun, CN;
Zimiao Wang, Changchun, CN;
Zhengchen Han, Changchun, CN;
Hongcai Xie, Changchun, CN;
Wei Zhang, Changchun, CN;
Shengteng Zhao, Changchun, CN;
Shuai Tong, Changchun, CN;
Junming Xiong, Changchun, CN;
Zixin Guo, Changchun, CN;
Hongwei Zhao, Changchun, CN;
Luquan Ren, Changchun, CN;
JILIN UNIVERSITY, Changchun, CN;
Abstract
The present invention provides a dynamic acoustic emission in-situ testing device and method for an electromagnetic rail launcher. The device comprises an armature, a guide rail and a support base, wherein the support base comprises an upper support base and a lower support base which are opposite to each other and are vertically arranged, a distance between the upper support base and the lower support base can be adjusted through bolts, the guide rail is vertically arranged between the upper support base and the lower support base, the armature is clamped in the guide rail, a plurality of groups of static acoustic emission sensors are arranged along the guide rail, a dynamic acoustic emission sensor is arranged on the armature. The method can comprehensively reveal the current-carrying friction damage mechanism of the armature-rail interface under the variable magnetic field intensity condition.