Paper Title:
Mechanics of Composite Delamination under Flexural Loading
  Abstract

The mechanics of interface delamination in CFRP composite laminates is examined using finite element method. For this purpose a 12-ply CFRP composite, with a total thickness of 2.4 mm and anti-symmetric ply sequence of [45/-45/45/0/-45/0/0/45/0/-45/45/-45] is simulated under three-point bend test setup. Each unidirectional composite lamina is treated as an equivalent elastic and orthotropic panel. Interface behavior is defined using damage, linear elastic constitutive model and employed to describe the initiation and progression of delamination during flexural loading. Complementary three-point bend test on CFRP composite specimen is performed at crosshead speed of 2 mm/min. The measured load-deflection response at mid-span location compares well with predicted values. Interface delamination accounts for up to 46.7 % reduction in flexural stiffness from the undamaged state. Delamination initiated at the center mid-span region for interfaces in the compressive laminates while edge delamination started in interfaces with tensile flexural stress in the laminates. Anti-symmetric distribution of the delaminated region is derived from the corresponding anti-symmetric ply sequence in the CFRP composite. The dissipation energy for edge delamination is greater than that for internal center delamination. In addition, delamination failure process in CFRP composite can be described by an exponential rate of fracture energy dissipation under monotonic three-point bend loading.

  Info
Periodical
Key Engineering Materials (Volumes 462-463)
Edited by
Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri
Pages
726-731
DOI
10.4028/www.scientific.net/KEM.462-463.726
Citation
S.S.R. Koloor, A. Abdul-Latif, M. N. Tamin, "Mechanics of Composite Delamination under Flexural Loading", Key Engineering Materials, Vols. 462-463, pp. 726-731, 2011
Online since
January 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Young Nam Kim, Kwang Hee Im, In Young Yang
247
Authors: Gui Ping Zhao, Chong Du Cho, Oh Yang Kwon
Abstract:In this paper, the energy absorption characteristics on extruded aluminum box-section strengthened with carbon-fiber-reinforced plastics...
1339
Authors: Adrien Perret, Sébastien Mistou, Louis Etienne Denaud, Thierry Mollé, Claudia Veyrac, Moussa Karama
Abstract:FUSCOMP (FUSelage COMPosite) is a Research & Development program which has received the label from the Aerospace Valley competitiveness...
49
Authors: Jing Feng Wang, Bo Wang, Zhong Ming Zheng
Chapter 9: New Technology for the Preparation and Construction of Building Materials
Abstract:To research the mechanical behaviour of the novel composite beam with concrete filled steel tubular (CFST) truss, an experimental study of...
1680
Authors: Yan Jun Chang, Gui Qiong Jiao, Ke Shi Zhang
Chapter 7: Computational Mechanics
Abstract:Based on the analysis of the woven structure, the compressive fracture process and strength of a 2.5D-C/SiC ceramic matrix composite were...
2859