Mechanical study and failure analysis on steel spirally tungsten inert gas (TIG) welded tubes

Spiral tubes and rings have been broadly used in the manufacturing sector, especially for the automobile industry. However, the failure of the rings will significantly shorten the service life of components, even leading to a disaster when the part is under operation. Generally, these tubes and rings are made from steel sheets spirally using the tungsten inert gas (TIG) welding method. Through the university-industry collaboration under the Mitacs program, the University of Toronto (U of T) team will give a fundamental understanding of failure mechanism of the (TIG) welded tube steels, and the partner company will improve their product quality and process stability by acquiring the study results from U of T on Process assessment, inspection method, and weld quality risk assessment.
This collaborative research provides theoretical knowledge in the failure mode from the TIG welding process and suggests a welding parameter window for the partner company to achieve a high-performance weld seam.

Faculty Supervisor:

Yu Zou


Xin Chu


Oetiker Limited






University of Toronto


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