Deformation study on carbon-fiber-braided composite subjected to low-temperature cycle

Xuefeng Yao; Guan-chang Jin; Li-Bo Meng; Xiu-Mei Wen

doi:10.1117/12.429570

13 June 2001 Deformation study on carbon-fiber-braided composite subjected to low-temperature cycle

Xuefeng Yao, Guan-chang Jin, Li-Bo Meng, Xiu-Mei Wen

Proceedings Volume 4317, Second International Conference on Experimental Mechanics; (2001) https://doi.org/10.1117/12.429570
Event: Second International Conference on Experimental Mechanics, 2000, Singapore, Singapore

Abstract

The deformation mechanism and the surface strain non- uniformities of the carbon fiber braided composites in low temperature cycle ranged from 0 degrees C to -40 degrees C by moire interferometry was described. A series of moire fringe patterns which reflect the thermal strain field of the braided composite are recorded. The relations between the fiber braided architecture and the degree of inhomogeneity of deformation are analyzed by the fringe waviness and the variation of fringe density. From the moire fringe patterns, it is obvious the higher shear strain was occur in the regions between braided yarns and a significant thermal expanding effects in fiber longitudinal and vertical direction. The strain distributions at 0-40 degrees C were presented and that the large strain nonuniformity as displaced and the maximum strain is 11 times higher than the average strain. From the experimental study moire interferometry is an effective research tool for the braided composite material.

Citation Download Citation

Xuefeng Yao, Guan-chang Jin, Li-Bo Meng, and Xiu-Mei Wen "Deformation study on carbon-fiber-braided composite subjected to low-temperature cycle", Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); https://doi.org/10.1117/12.429570

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