A probabilistic approach for transverse crack evolution in a composite laminate under variable amplitude cyclic loading

Keiji Ogi, Shigeki Yashiro, Koji Niimi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper presents a theoretical approach for predicting transverse cracking behavior in a cross-ply laminate with a thick transverse ply under variable amplitude loads for which the cracks grow instantaneously, or very quickly, across the specimen width. The transverse crack density was derived on the basis of the slow crack growth (SCG) concept using the Paris law in conjunction with the Weibull distribution for a brittle material subjected to multi-stage cyclic loading. A fracture criterion obtained was related with the empirical rules by Miner and Broutman & Sahu. Next, the probabilistic SCG model was applied to transverse cracking in a cross-ply laminate under multi-stage cyclic loading. The two-stage fatigue tests with various loading sequences and amplitudes were conducted for carbon fibre reinforced plastic (CFRP) cross-ply laminates in addition to single-stage fatigue tests for various maximum stresses. The experiment results were compared with the predictions to verify the validity of the model.

Original languageEnglish
Pages (from-to)383-390
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume41
Issue number3
DOIs
Publication statusPublished - Mar 1 2010

Fingerprint

Laminates
Cracks
Crack propagation
Composite materials
Fatigue of materials
Miners
Weibull distribution
Carbon fiber reinforced plastics
Brittleness
Experiments
carbon fiber reinforced plastic

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials

Cite this

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