Modeling of evolving damage in high temperature polymer matrix composites subjected to thermal oxidation

This paper describes mechanism-based modeling of damage evolution in high temperature polymer matrix composites (HTPMC) under thermo-oxidative aging conditions. Specifically, a multi-scale model based on micro-mechanics analysis in conjunction with continuum damage mechanics (CDM) is developed to si...

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Bibliographic Details
Published in:Journal of materials science 2008-10, Vol.43 (20), p.6651-6660
Main Authors: Roy, Samit, Singh, Sushil, Schoeppner, Gregory A.
Format: Article
Language:English
Subjects:
Applied sciences
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Computer simulation
Continuum damage mechanics
Crystallography and Scattering Methods
Debonding
Exact sciences and technology
Forms of application and semi-finished materials
High temperature
Laminates
Life prediction
Materials Science
Modelling
Multiscale analysis
Oxidation
Penetration
Polymer industry, paints, wood
Polymer matrix composites
Polymer Sciences
Polymers
Scale models
Shrinkage
Solid Mechanics
Stretching the Endurance Boundary of Composite Materials: Pushing the Performance Limit of Composite Structures
Structural members
Technology of polymers
Weight loss
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Summary:This paper describes mechanism-based modeling of damage evolution in high temperature polymer matrix composites (HTPMC) under thermo-oxidative aging conditions. Specifically, a multi-scale model based on micro-mechanics analysis in conjunction with continuum damage mechanics (CDM) is developed to simulate the accelerated fiber–matrix debond growth in the longitudinal direction of a unidirectional HTPMC. Using this approach, one can relate the behavior of composites at the micro-level (representative volume element) to the macro-level (structural element) in a computationally tractable manner. Thermo-oxidative aging is simulated with diffusion-reaction model in which temperature, oxygen concentration, and weight loss effects are considered. For debond growth simulation, a model based on Darcy’s laws for oxygen permeation in the fiber–matrix interface is employed, that, when coupled with polymer shrinkage, provides a mechanism for permeation-controlled debond growth in HTPMC. Benchmark of model prediction with experimental observations of oxidation layer growth is presented, together with a laminate thermo-oxidative life prediction model based on CDM to demonstrate proof-of-concept.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-008-2691-1