Time Dependent Behavior of Laminated Composites at Elevated Temperatures

SungKyu Ha, George S. Springer

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Models are presented for describing the time dependent viscoelastic and viscoplastic stress-strain relationships of unidirectional fiber reinforced thermoset matrix composites exposed to elevated temperatures. For Fiberite T300/976 graphite-epoxy com posite the constants in the stress-strain relationships were determined from data obtained in four point bend tests over the range 75 to 350°F. A procedure is also described which, together with the stress-strain models developed in this study, can be used to calculate the stresses and strains in loaded multidirectional laminates at high temperatures. Strains in loaded multidirectional Fiberite T300/976 laminates were measured as a function of time at temperatures varying from 75 to 350°F. Strains calculated by the models were compared to these data, and good agreements were found between the analytical and experimental results.

Original languageEnglish
Pages (from-to)1159-1197
Number of pages39
JournalJournal of Composite Materials
Volume23
Issue number11
DOIs
StatePublished - 1989 Jan 1

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Laminated composites
Temperature
Laminates
Graphite
Thermosets
Fibers
Composite materials

Cite this

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Time Dependent Behavior of Laminated Composites at Elevated Temperatures. / Ha, SungKyu; Springer, George S.

In: Journal of Composite Materials, Vol. 23, No. 11, 01.01.1989, p. 1159-1197.

Research output: Contribution to journalArticle

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