Modeling of Diffusion in a Micro-cracked Composite Laminate using Approximate Solutions
Abstract
A set of approximate solutions for predicting through-thickness diffusivity and solvent uptake behavior of micro-cracked composite laminates is presented. In order to maintain solution tractability, Fickian diffusion is adapted as the basic framework of the model. Starting with the assumption of a uniform micro-crack array on the exposed faces of the laminate, an RVE (representative volume element) approach is employed to estimate the laminate through-thickness diffusivity as a function of crack depth and crack density. It is also established that, for the Graphite/Epoxy material system under consideration, the rate of moisture ingress into micro-cracks due to capillary imbibition does not have an appreciable long-term influence on the laminate diffusivity and uptake. The approximate solutions are verified by comparison with available test data from moisture uptake experiments and with finite element predictions.
Recommended Citation
S. Roy and T. Bandorawalla, "Modeling of Diffusion in a Micro-cracked Composite Laminate using Approximate Solutions," Journal of Composite Materials, vol. 33, no. 10, pp. 872 - 905, SAGE Publications; American Society for Composites, Jan 1999.
The definitive version is available at https://doi.org/10.1177/002199839903301001
Department(s)
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
0021-9983
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 SAGE Publications; American Society for Composites, All rights reserved.
Publication Date
01 Jan 1999
