Failure analysis of single-point butt clinched joint with dissimilar aluminium alloy sheets

ABSTRACT

To explore the failure principle of single-point butt clinched joints, the AA5052 and AA6061 sheets were employed to produce the single-point butt clinched joints. The microscopic morphology of the fracture surface, geometrical parameters, static strength, energy absorption and failure details of the joints were analysed. The experimental results showed that fracture forms of sheet materials are the same as ductile fracture. The sheet combination has a significant influence on the mechanical properties of the single-point butt clinched joint, which is ultimately due to the different mechanical properties of the basal sheets. The single-point butt clinching process proposed in this work contributes to simplifying the clinching process while increasing the joining efficiency.

KEYWORDS:

• Mechanical clinching
• failure mechanism
• mechanical properties
• aluminium alloy

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This research work is supported by the National Natural Science Foundation of China [grant number 52275398]; Central South University Innovation-Driven Research Programme (2023CXQD069), Hunan Provincial Natural Science Foundation for Excellent Young Scholars [grant number 2021JJ20059]; Huxiang High-Level Talent Gathering Project of Hunan Province [grant number 2021RC5001]; the Project of State Key Laboratory of High Performance Complex Manufacturing, Central South University [grant number ZZYJKT2022-01]; Huxiang Young Talents Program of Hunan Province [grant number 2021RC3024].