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:
Nov. 26, 2013
Filed:
Nov. 23, 2010
Hironori Okauchi, Kobe, JP;
Mamoru Nishio, Kobe, JP;
Hideyuki Hirasawa, Kobe, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-Shi, JP;
Abstract
This invention provides a method for inspecting a joined region and joining strength of a joined object formed by a spot friction stir joining process. In this method, an ultrasonic wave is introduced into the joined object from a backing faceopposed to a joining tool plunging faceand the ultrasonic wave reflected from the joined objectis taken in. In this case, the joining regionand the joining strength is estimated by observing a reflected wave of the ultrasonic wave in the vicinity of a position, along a reference direction Z, corresponding to an interfaceof two joining members, without using the reflected wave of the ultrasonic wave reflected from the joining tool plunging face, thereby inspecting the joined object based on the estimation result. Thus, influence of a concave/convex shape of a joining markformed in the joining tool plunging facecan be avoided, and the use of the ultrasonic wave for estimating the joined regioncan achieve an inspection of joining quality without destroying the joined object