NDTnet 1998 Aug, Vol.3 No.8

Abstract

It is effective to manufacturing of the compound product by having high performance and a high function or a small resource making about the material and lightening the product, etc. and use to various products is advanced to the solid phase diffused bonding joint by which various dissimilar metals is connected in high accuracy. However, minute defects such as the unjoint parts by defective diffusion and the void occur easily in the compound product on the bonding interface. Such a defect remarkably decreases the reliability of the product.

Therefore, the establishment of the Non-Destructive Inspection technique to understand the presence of the defect on the bonding interface by the ultrasonic wave etc. accurately is demanded. And, the reliability of the product improves further by feeding back accurate ultrasonic wave information obtained here to the manufacturing process.

This study was in real time measured that the reflective echo height of thebonding interface in the solid phase diffused bonding process of carbon steel andtitanium using ultrasonic testing method. As a result, the following were madediscernment.

(1)	The plastic deformation , the creep deformation, and the bonding process onthe bonding interface can be presumed from the height of the echo.
(2)	The bonding area rate in the bonding process can be presumed from the height of the echo.
(3)	The reverse of the phase is shown that the bonding area rate became 80% or more, as the ultrasonic wave of incidence from the titanium side.

Abstract Source:
Book of Abstracts, 7th European Conference on Non-Destructive Testing, 26-29 May 1998, ISBN: 87-986898-0-00

Full-Text Source:
Proceedings of the 7th European Conference on Non-Destructive Testing, 26-29 May 1998, ISBN:

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