This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Quality Inspection of Spot Welds using Digital Shearography
ISSN: 1946-3979, e-ISSN: 1946-3987
Published April 16, 2012 by SAE International in United States
Citation: Xu, N., Xie, X., Harmon, G., Gu, R. et al., "Quality Inspection of Spot Welds using Digital Shearography," SAE Int. J. Mater. Manf. 5(1):96-101, 2012, https://doi.org/10.4271/2012-01-0182.
Spot Welding is an important welding technique which is widely used in automotive and aerospace industry. One of the keys of checking the quality of the welds is measuring the size of the nugget. In this paper, the Shearographic technique is utilized to test weld joint samples under the thermal loading condition. The goal is to identify the different group of the nuggets (i.e. small, middle, and large sizes, which indicate the quality of spot welds). In the experiments, the sample under test is fixed by a magnet method from behind at the four edges. Thermal loading was applied in the back side and the sample is inspected using the digital Shearographic system in the front side. Results show the great possibility of classifying the nugget size into three groups and the measurement is well repeatable.
|SAE ITC E&A Standard||TS39 Manufacturing and Inspection Requirements for Rivet, Blind, Self-Plugging, Flush Break, Mechanically Locked Stem, Aluminium Alloys AS46784 to AS46787|
|Aerospace Material Specification||Titanium Welding Wire Commercially Pure Environment Controlled Packaging|
|Technical Paper||Defects in High Quality Aircraft Tubing and Inspection Methods|