Novel Experimental Design for Two-Dimensional Delamination in Fiber-ReinforcedPolymer Laminates

Proceedings

P. Vassilopoulos, Anastasios¹  Cameselle-Molares, Aida²  Keller, Thomas³ 

[1] Author to whom correspondence should be addressed.;Composite Construction Laboratory (CCLab), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland;Presented at the 18th International Conference on Experimental Mechanics. Brussels, Belgium, 1–5 July 2018.

关键词: two-dimensional delamination;    laminates;    embedded pre-crack;   

DOI  :  10.3390/ICEM18-05283

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The two-dimensional (2D) delamination behavior of composite laminates under quasi-static out-of-plane opening loads has been experimentally investigated. A novel design and experimental set-up for fiber-reinforced polymer (FRP) laminated plates with a circular embedded pre-crack was developed. Increasing load-displacement curves were obtained due to the increasing crack front length during propagation. Throughout the loading process, stiffening and softening mechanisms were activated. The stretching of delaminated part of the laminates constituted the main stiffening mechanism. Once the crack started growing, a corresponding softening due to crack propagation occurred together with a secondary stiffening mechanism, fiber-bridging. These stiffness-related mechanisms were reflected in the compliance.

【 授权许可】

CC BY