Experiments and Cohesive Zone Model Parameters for T650/AFR-PE-4/FM680-1 at High Temperatures |
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| Authors: | Peter A. Gustafson Anthony M. Waas |
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| Affiliation: | 1Assistant Professor of Mechanical and Aeronautical Engineering, Dept. of Mechanical and Aeronautical Engineering, Western Michigan Univ., Kalamazoo, MI 49008. E-mail: peter.gustafson@wmich.edu
2Professor of Aerospace Engineering, Professor of Mechanical Engineering, Dept. of Aerospace Engineering, Univ. of Michigan, Ann Arbor, MI 48109 (corresponding author). E-mail: dcw@umich.edu
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| Abstract: | 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. |
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| Keywords: | Experimentation Parameters Temperature effects Cracking Aerospace engineering |
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