Metal fusion bonding – Process – With measuring – testing – indicating – inspecting – or...
Reexamination Certificate
2011-01-04
2011-01-04
Stoner, Kiley (Department: 1793)
Metal fusion bonding
Process
With measuring, testing, indicating, inspecting, or...
C228S008000, C228S009000, C228S104000
Reexamination Certificate
active
07861910
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 face25opposed to a joining tool plunging face24and the ultrasonic wave reflected from the joined object20is taken in. In this case, the joining region21and 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 interface27of 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 mark29formed in the joining tool plunging face24can be avoided, and the use of the ultrasonic wave for estimating the joined region21can achieve an inspection of joining quality without destroying the joined object20.
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Hirasawa Hideyuki
Nishio Mamoru
Okauchi Hironori
Kawasaki Jukogyo Kabushiki Kaisha
Oliff & Berridg,e PLC
Stoner Kiley
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