Investigating the Effect of Interface Morphology in Adhesively Bonded Composite Wavy-Lap Joints

Journal of Composites Science

Shahwaiz Anjum¹  Sakineh Fotouhi²  Roya Akrami³  Joel Boaretto⁴  FelipeVannucchi de Camargo⁴  Mohamad Fotouhi⁵ 

[1] Department of Engineering Design and Mathematics, University of the West of England (UWE), Bristol BS16 1QY, UK;Department of Mechanical Engineering, University of Tabriz, Tabriz 5166614766, Iran;Department of Mechanical and Aerospace Engineering, University of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, UK;Randon Center of Technology—Estrada Arziro Galafassi, s/no, Farroupilha 95180-000, Brazil;School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK;

关键词: wavy joint;    interface morphology;    lap joint;    composite;    adhesive;   

DOI  :  10.3390/jcs5010032

来源: DOAJ

【 摘 要 】

Joints and interfaces are one of the key aspects of the design and production of composite structures. This paper investigates the effect of adhesive–adherend interface morphology on the mechanical behavior of wavy-lap joints with the aim to improve the mechanical performance. Intentional deviation from a flat joint plane was introduced in different bond angles (0°, 60°, 90° and 120°) and the joints were subjected to a quasi-static tensile load. Comparisons were made regarding the mechanical behavior of the conventional flat joint and the wavy joints. The visible failure modes that occurred within each of the joint configurations was also highlighted and explained. Load vs. displacement graphs were produced and compared, as well as the failure modes discussed both visually and qualitatively. It was observed that distinct interface morphologies result in variation in the load–displacement curve and damage types. The wavy-lap joints experience a considerably higher displacement due to the additional bending in the joint area, and the initial damage starts occurring at a higher displacement. However, the load level had its maximum value for the single-lap joints. Our findings provide insight for the development of different interface morphology angle variation to optimize the joints behavior, which is widely observed in some biological systems to improve their performance.

【 授权许可】

Unknown