Use of the Iosipescu test for the identification of shear damage evolution laws of an orthotropic composite
Journal article, 2017

The experimental evaluation of the shear response of fibre-reinforced plies is a requirement for accurate material models predicting progressive damage. In the first part of the paper, the quality of the Iosipescu shear test is investigated with full-field strain measurements and finite element analyses. In the second part, the in-plane and through-thickness shear response of an orthotropic carbon/epoxy uni-weave non-crimp fabric composite are compared, and the stress–strain curves used as input for two continuum damage mechanics models. Both models were able to predict accurately the nonlinear shear behaviour of the material. The model parameters and the damage evolution laws could easily be extracted from cyclic Iosipescu tests.

Continuum damage mechanics CDM

Finite element analysis (FEA)


Shear testing

Thermosetting resin


Thomas Bru

Chalmers, Applied Mechanics, Material and Computational Mechanics


Robin Olsson


Renaud Gutkin


Gaurav Vyas


Composite Structures

0263-8223 (ISSN)

Vol. 174 319-328

Subject Categories

Mechanical Engineering

Materials Engineering

Composite Science and Engineering

Areas of Advance

Materials Science



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