Applying Laser-Ultrasonic and Acoustic-Emission Methods to Nondestructive Testing at Different Stages of Deformation Formation in Friction Stir Welding

2020 ◽  
Vol 56 (3) ◽  
pp. 191-200
Author(s):  
K. A. Stepanova ◽  
I. Yu. Kinzhagulov ◽  
Yu. O. Yakovlev ◽  
A. S. Kovalevich ◽  
D. S. Ashikhin ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Friction Stir Welding ◽  
Nondestructive Testing ◽  
Laser Ultrasonic ◽  
Friction Stir

scholarly journals Investigation of Nondestructive Testing Methods for Friction Stir Welding

Metals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 624 ◽  
Author(s):  
Hossein Taheri ◽  
Margaret Kilpatrick ◽  
Matthew Norvalls ◽  
Warren J. Harper ◽  
Lucas W. Koester ◽  
...  
Keyword(s):  
Friction Stir Welding ◽  
Nondestructive Testing ◽  
Dissimilar Materials ◽  
Ex Situ ◽  
Testing Methods ◽  
Friction Stir ◽  
Weld Properties ◽  
Unique Approach ◽  
Nondestructive Testing Methods

Friction stir welding is a method of materials processing that enables the joining of similar and dissimilar materials. The process, as originally designed by The Welding Institute (TWI), provides a unique approach to manufacturing—where materials can be joined in many designs and still retain mechanical properties that are similar to, or greater than, other forms of welding. This process is not free of defects that can alter, limit, and occasionally render the resulting weld unusable. Most common amongst these defects are kissing bonds, wormholes and cracks that are often hidden from visual inspection. To identify these defects, various nondestructive testing methods are being used. This paper presents background to the process of friction stir welding and identifies major process parameters that affect the weld properties, the origin, and types of defects that can occur, and potential nondestructive methods for ex-situ detection and in-situ identification of these potential defects, which can then allow for corrective action to be taken.

scholarly journals Residual stress evaluation in friction stir welding of aluminum plates by means of acoustic emission and ultrasonic waves

2018 ◽  
Vol 46 (3) ◽  
pp. 230-237 ◽  
Author(s):  
S. Sadeghi ◽  
Zarif Karimi ◽  
M. Fotouhi ◽  
M. Hasani ◽  
Ahmadi Najafabadi ◽  
...  
Keyword(s):  
Residual Stress ◽  
Acoustic Emission ◽  
Friction Stir Welding ◽  
Ultrasonic Waves ◽  
Stress Evaluation ◽  
Friction Stir ◽  
Aluminum Plates
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