On crack, rigid-line fiber, and interface interactions

K. X. Hu, A. Chandra*, Y. Huang

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Interactions among cracks, rigid-line fibers, and the interface between dissimilar materials is the focus of this paper. The interface may also include point defects. An integral equation formulation capable of handling general crack-fiber-interface interactions is developed here. It is observed that an interface can significantly alter the nature of interactions among cracks and rigid-line fibers. As an example, the inner-tip stress intensity factors (SIFs) for a collinear crack system may be reduced, in the presence of an interface, to less than the outer-tip SIFs. Mixing of Mode-I and Mode-II behaviors due to interactions and their effects on stress amplification and retardation are also investigated. The effects of fiber reinforcements on crack propagation are investigated on two different scales, using a detailed local analysis as well as a micromechanical approach. The results suggest that detailed local analyses are necessary for an accurate understanding of crack-tip behaviors. A bi-material interface is assumed in the present analysis. Thus, it is suitable for composite materials with relatively large-scale inhomogeneity, where cracks and fibers can coexist, or with sublevel microcracking near reinforcements.

Original languageEnglish (US)
Pages (from-to)15-28
Number of pages14
JournalMechanics of Materials
Volume19
Issue number1
DOIs
StatePublished - Jan 1 1994

Fingerprint

cracks
Cracks
fibers
Fibers
stress intensity factors
Stress intensity factors
interactions
reinforcement
Dissimilar materials
Microcracking
Point defects
Fiber reinforced materials
Crack tips
crack tips
Integral equations
crack propagation
Amplification
Crack propagation
Reinforcement
point defects

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Mechanics of Materials

Cite this

Hu, K. X. ; Chandra, A. ; Huang, Y. / On crack, rigid-line fiber, and interface interactions. In: Mechanics of Materials. 1994 ; Vol. 19, No. 1. pp. 15-28.
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On crack, rigid-line fiber, and interface interactions. / Hu, K. X.; Chandra, A.; Huang, Y.

In: Mechanics of Materials, Vol. 19, No. 1, 01.01.1994, p. 15-28.

Research output: Contribution to journalArticle

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