Experiments and Cohesive Zone Model Parameters for T650/AFR-PE-4/FM680-1 at High Temperatures

This paper reports an experimental program to establish a cohesive zone model for the T650/AFR-PE-4 (laminate) and FM680-1 (adhesive) system. The cohesive zone model is based on a four parameter characterization: in each mode, a range of values for the critical energy release rate and cohesive stren...

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Bibliographic Details
Published in:Journal of aerospace engineering 2011-07, Vol.24 (3), p.285-297
Main Authors: Gustafson, Peter A, Waas, Anthony M
Format: Article
Language:English
Subjects:
Buttons
Cohesion
Energy release rate
Flexing
Inverse method
Laminates
Mathematical models
Strength
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Summary:This paper reports an experimental program to establish a cohesive zone model for the T650/AFR-PE-4 (laminate) and FM680-1 (adhesive) system. The cohesive zone model is based on a four parameter characterization: in each mode, a range of values for the critical energy release rate and cohesive strength are computed from a set of experimental results. Values of each parameter are determined over the temperature range of 20–350°C. Owing to experimental limitations, two methods for determining the Mode I critical energy release rate are reported from the double cantilever beam test: the area method and the inverse method. The Mode I strength is determined from a button peel stress test. The values of the Mode II parameters are determined by using a mapping procedure that accounts for multiparameter dependence in models of the end notch flexure and single lap joint tests.
ISSN:0893-1321
1943-5525
DOI:10.1061/(ASCE)AS.1943-5525.0000083