# NUMERICAL SIMULATION OF MODE-II FRACTURE OF CFRP WITH TOUGHENING INTERLAYER USING BILINEAR COHESIVE ZONE MODEL

> Title: NUMERICAL SIMULATION OF MODE-II FRACTURE OF CFRP WITH TOUGHENING INTERLAYER USING BILINEAR COHESIVE ZONE MODEL Page Range: p.483-488 Author(s): Guowei Zhu; Peng Qu; Yunli Guo; Gang Liu; Xiaosu Yi; Yuxi Jia File size: Download the pdf (subscribers only) Buy the pdf...

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Published: 2014-05-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: NUMERICAL SIMULATION OF MODE-II FRACTURE OF CFRP WITH TOUGHENING INTERLAYER USING BILINEAR COHESIVE ZONE MODEL**
 Page Range: p.483-488
 Author(s): Guowei Zhu; Peng Qu; Yunli Guo; Gang Liu; Xiaosu Yi; Yuxi Jia
 File size:
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc22-5&JournalID=102184&JIP=) (subscribers only)
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 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 22
 Issue No: No.5

**Abstract**
 The effect of interfacial toughening porous non-woven fabric (PNF) on the Mode-II fracture toughness (GIIC) of carbon fibre reinforced polymer is studied by performing end notched flexure tests. The PNF with a thickness of 10 (mu)m is selected as the interleaf material, which is modelled by the bilinear cohesive zone model. The vertical displacement of loading points and the corresponding force are measured. The influences of the cohesive shear strength and GIIC of the toughening interlayer on the mechanical response of composites are studied. The main results are obtained as follows. The peak load increases with the increase of the cohesive shear strength, but the increasing amplitude is gradually reduced. Once the delamination propagates steadily, the influence of the cohesive shear strength can be neglected, and at the moment, GIIC of toughening interlayer plays a leading role. Furthermore, the greater GIIC of toughening interlayer is, the greater GIIC of composites and peak load are. 9 Refs.

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