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research article

Mixed-Mode I/II fracture behavior of asymmetric adhesively-bonded pultruded composite joints

Shahverdi, Moslem  
•
Vassilopoulos, Anastasios P.  
•
Keller, Thomas  
2014
Engineering Fracture Mechanics

The mixed-mode fracture behavior of adhesively-bonded pultruded glass fiber-reinforced polymer joints was experimentally investigated using asymmetric mixed-mode bending specimens. The crack propagated along paths outside the symmetry plane and, therefore, mode partition could not be performed in the standardized way as for symmetric specimens. An approach based on the existing "global method", designated the "extended global method", was established and applied for the analysis of the experimental data and the fracture mode partitioning. Finite element models were developed in order to validate the approach. The virtual crack closure technique was used for calculation of the fracture components at the crack tip and an exponential traction-separation cohesive law was used to simulate the fiber bridging zone. In addition, the experimental compliance method was used for calculation of the fracture energy for the examined asymmetric mixed-mode bending specimens. Results obtained using the "extended global method" and the experimental compliance method were in good agreement with the results from FE models. (C) 2013 Elsevier Ltd. All rights reserved.

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Type
research article
DOI
10.1016/j.engfracmech.2013.11.014
Web of Science ID

WOS:000330747400004

Author(s)
Shahverdi, Moslem  
Vassilopoulos, Anastasios P.  
Keller, Thomas  
Date Issued

2014

Publisher

Elsevier

Published in
Engineering Fracture Mechanics
Volume

115

Start page

43

End page

59

Subjects

Pultruded GFRP composites

•

Fracture mechanics

•

Mode partition

•

Asymmetric MMB

•

Finite element

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CCLAB  
Available on Infoscience
April 2, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/102510
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