Study on the impact resistance of Z-pin reinforced bismaleimide resin matrix composites with single lap joints

Yue Jin; Yong Li; Wenying Li

doi:10.1117/12.3007605

25 October 2023 Study on the impact resistance of Z-pin reinforced bismaleimide resin matrix composites with single lap joints

Yue Jin, Yong Li, Wenying Li

Author Affiliations +

Proceedings Volume 12801, Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023); 1280106 (2023) https://doi.org/10.1117/12.3007605
Event: Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023), 2023, Dalian, China

Abstract

The joint area is the weakest part of the composite component and is more susceptible to damage under impact. In this paper, the effect of impact energy on the impact resistance of the Z-pin-reinforced single-lap joint was investigated by drop hammer impact tests, combined with ultrasonic C-scan and microscopic morphological analysis of the Z-pin strengthening mechanism. It was found that Z-pin improves the impact resistance of the joint by increasing interlaminar toughness to inhibit delamination and perforation damage. Z-pin implantation reduces impact damage, resulting in a 47.1 % reduction in the damaged area of the joint. Impact loading causes damage to joints such as microcracking, delamination damage, fracture of matrix fibers, and fracture of the Z-pin.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yue Jin, Yong Li, and Wenying Li "Study on the impact resistance of Z-pin reinforced bismaleimide resin matrix composites with single lap joints", Proc. SPIE 12801, Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023), 1280106 (25 October 2023); https://doi.org/10.1117/12.3007605

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