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Analysis of failure mechanisms of adhesive joints modified by a novel additive manufacturing-assisted method

Yousefi Kanani, Armin, Wang, Xing-er, Hou, Xiaonan, Rennie, Allan E.W., Ye, Jianqiao (2022) Analysis of failure mechanisms of adhesive joints modified by a novel additive manufacturing-assisted method. Engineering Structures, 277 . Article Number 115428. ISSN 0141-0296. E-ISSN 1873-7323. (KAR id:99459)

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The research presented in this paper used an innovative method to modify the configuration of adhesively bonded joints for improved mechanical performance. Additive manufacturing was employed to produce sacrificial support structures with a water-soluble filament (Polyvinyl Alcohol). The design freedom offered by additive manufacturing makes it easy to tailor fixtures to any geometry, which can be used to accurately make the desired fillet shape at the end of the adhesive bond line. In addition to the experimental tests, the finite element method (FEM) was used to study the stress distribution along the bond line for four different modified bonded joints, whilst the discrete element method (DEM) was used to estimate the joint failure load and crack path in the adhesive bond line due to its strength in describing the initiation and progression of micro-cracks. The results show that the novel manufacturing method can produce an accurate fillet at the end of the bond line, regardless of the adhesive type. The mechanical performance of the joints with the modified features increased significantly. Furthermore, the failure load and crack path obtained from the DEM model is in close agreement with experimental and finite element (FE) results. Hence, the failure mechanism of the hybrid joints is then summarised.

Item Type: Article
Uncontrolled keywords: Multi-material joint, Adhesive joints, Discrete element method, Finite element method, Additive manufacturing
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Funders: Engineering and Physical Sciences Research Council (
Depositing User: Armin Yousefi Kanani
Date Deposited: 09 Jan 2023 22:19 UTC
Last Modified: 11 Jan 2023 10:34 UTC
Resource URI: (The current URI for this page, for reference purposes)
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