Prediction of creep rupture in unidirectional composites

Jun Koyanagi, Fumio Ogawa, Hiroyuki Kawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper describes a creep rupture model that takes into account the interfacial debonding and its propagation around broken fibers in unidirectional fiber-reinforced polymers. The interfacial debonding is accompanied by fiber breaks under a longitudinal tensile load, and it causes the material property to decrease with increase of the interfacial debonding length. Also, there is a interaction between probability of fiber break and the growth of the interfacial debonding, eventually, the rate of the decrease of material properties is exponentially. In this study, the probability of the fiber break is formulated as a function of stress recovery length that has a time-dependency and the creep rupture strain is predicted as a function of the increase rate of the stress recovery length. Moreover, the creep behavior is predicted by using compliance component of the matrix as a function of time. It is assumed that when the composite strain reaches the time-dependent material rupture strain, the composite fails in creep rupture.

Original languageEnglish
Title of host publicationProceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
Pages1857-1863
Number of pages7
Publication statusPublished - 2005 Dec 1
Event2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics - Portland, OR, United States
Duration: 2005 Jun 72005 Jun 9

Publication series

NameProceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics

Conference

Conference2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
CountryUnited States
CityPortland, OR
Period05/6/705/6/9

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Prediction of creep rupture in unidirectional composites'. Together they form a unique fingerprint.

Cite this