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Free‐edge delamination in composite laminates under tensile loading: An analytical closed‐form approach
Author(s) -
Frey Christopher,
Dölling Sebastian,
Becker Wilfried
Publication year - 2021
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.202000011
Subject(s) - materials science , delamination (geology) , composite laminates , ultimate tensile strength , composite material , composite number , structural engineering , stress (linguistics) , fracture (geology) , enhanced data rates for gsm evolution , computer science , engineering , geology , paleontology , telecommunications , linguistics , philosophy , subduction , tectonics
In the present study, interlaminar crack initiation in symmetric angle‐ply laminates under tensile loading is investigated using the coupled stress and energy criterion, whereby the required stress and energy quantities are determined by means of a new analytical closed‐form model. The identification of unknown interface fracture toughnesses is addressed by a parameter fit within physical reasonable limits. The resulting effective failure loads are compared to experimental data and show the high potential of the coupled criterion on the one hand and of the proposed analytical model on the other hand.