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research article

Experimental investigation of two-dimensional Mode-II delamination in composite laminates

Wang, Congzhe  
•
Vassilopoulos, Anastasios P.  
•
Keller, Thomas  
October 1, 2023
Composites Part A-Applied Science And Manufacturing

The two-dimensional (2D) delamination growth in composite laminates under the Mode-II fracture condition was experimentally investigated using a novel set-up. Circular plate specimens with a centrally embedded pre-crack of two sizes were semi-clamped along the edge allowing sliding movement and loaded transversally at the center. In addition, one-dimensional (1D) experiments were conducted on specimens of the same material in an endloaded split set-up for comparison. For 2D experiments, the whole delamination process could be divided into three stages, i.e., crack initiation, slow propagation and subsequent rapid propagation. The corresponding load-deflection response, crack-length changes, stiffness and compliance variations in each stage were discussed. In contrast to 1D experiments, the load continued to increase in 2D cases even after rapid crack propagation due to the increasing crack-front length. Under post-inspection with a digital microscope, a much longer fracture process zone, including large-scale fiber bridging, was observed in 2D compared to 1D specimens.

  • Details
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Type
research article
DOI
10.1016/j.compositesa.2023.107666
Web of Science ID

WOS:001054393300001

Author(s)
Wang, Congzhe  
•
Vassilopoulos, Anastasios P.  
•
Keller, Thomas  
Date Issued

2023-10-01

Published in
Composites Part A-Applied Science And Manufacturing
Volume

173

Article Number

107666

Subjects

Engineering, Manufacturing

•

Materials Science, Composites

•

Engineering

•

Materials Science

•

2d delamination

•

mode ii

•

laminates

•

fracture process zone

•

interlaminar fracture

•

impact performance

•

failure

•

resistance

•

compression

•

propagation

•

panels

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CCLAB  
GIS-GE  
RelationURL/DOI

IsContinuedBy

https://infoscience.epfl.ch/record/306940?&ln=fr
Available on Infoscience
September 11, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/200426
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