Thermoelastic analysis of cracked woven GFRP laminates at cryogenic temperatures

We deal with the thermal–mechanical response of multi-layered G-11 woven glass/epoxy laminates with cracks and temperature-dependent properties under tension at liquid helium temperature (4 K). The composite material is assumed to be in generalized plane strain. Cracks are located in the fill fiber...

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Bibliographic Details
Published in:Cryogenics (Guildford) 2002-08, Vol.42 (8), p.451-462
Main Authors: Takeda, Tomo, Shindo, Yasuhide, Narita, Fumio, Kumagai, Susumu
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Cracks
Cryogenics
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Helium
Low temperature phenomena
Mechanical properties
Multilayers
Plastic laminates
Refrigerating engineering. Cryogenics. Food conservation
Residual stresses
Stress concentration
Structural supports
Superconducting magnets
Thermal stress
Thermoelasticity
Thermomechanical treatment
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Summary:We deal with the thermal–mechanical response of multi-layered G-11 woven glass/epoxy laminates with cracks and temperature-dependent properties under tension at liquid helium temperature (4 K). The composite material is assumed to be in generalized plane strain. Cracks are located in the fill fiber bundles and are assumed to span the width of the fill fiber bundles. Finite element model is used to study the influence of residual thermal stresses on the mechanical behavior of multi-layered woven laminates with cracks. Numerical calculations are carried out, and the Young's modulus and stress distributions near the crack tip are shown graphically.
ISSN:0011-2275
1879-2235
DOI:10.1016/S0011-2275(02)00051-6