Stress Intensity Factors for Woven Glass/Epoxy Laminates with Cracks at Cryogenic Temperatures

Tomo Takeda, Yasuhide Shindo, Fumio Narita, Kazuaki Sanada

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


We investigate the stress intensity factors for several crack configurations in G-11 woven glass/epoxy laminates with temperature-dependent properties under tension at cryogenic temperatures. A state of generalized plane strain is assumed. Cracks are assumed to have occurred in the transverse fiber bundles. Cases of a single stack and doubly-periodic arrays of cracks are considered. The order of stress singularities at the tip of a crack is obtained for the case where the crack is normal to and ends at an interface between two fiber bundles. A finite element method is used to determine the stress intensity factors at the crack tip of two-layered woven laminates. Special singular elements containing the exact stress singularity are placed around the crack tip. Numerical results for the stress intensity factor and the order of stress singularities at cryogenic temperatures are obtained and are presented in a graphical form.

Original languageEnglish
Pages (from-to)109-132
Number of pages24
JournalMechanics of Advanced Materials and Structures
Issue number2
Publication statusPublished - 2004 Mar


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