Plastic Deformation of Fiber Coating in Polymer Matrix Composites under Hygrothermal Loading

This paper is concerned with the study of elasto-plastic deformation of the coating, and consequently, the changes in the states of stress in the constituent phases of a unidirectional fiber reinforced polymer matrix composite (PMC) under uniform thermal, hygral and hygrothermal loadings. A four-pha...

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Bibliographic Details
Published in:Journal of reinforced plastics and composites 1999-01, Vol.18 (11), p.985-1010
Main Authors: Upadhyay, P. C., Gupta, G. Srinivas, Lyons, D. W.
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
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Summary:This paper is concerned with the study of elasto-plastic deformation of the coating, and consequently, the changes in the states of stress in the constituent phases of a unidirectional fiber reinforced polymer matrix composite (PMC) under uniform thermal, hygral and hygrothermal loadings. A four-phase composite cylinder assemblage (CCA) model has been used for the analysis. The coating interphase between the fiber and the matrix has been taken to be of lower modulus and lower yield stress value than that of the matrix. Only those combinations of temperature and moisture content are considered which give rise to plastic deformation in the coating, other phases still remaining elastic. Plastic behaviour of the coating has been idealized by taking a linear work-hardening constitutive relation.
ISSN:0731-6844
1530-7964
DOI:10.1177/073168449901801103