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Proceedings Paper

Deformation study on carbon-fiber-braided composite subjected to low-temperature cycle
Author(s): Xuefeng Yao; Guan-chang Jin; Li-Bo Meng; Xiu-Mei Wen
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Paper 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.

Paper Details

Date Published: 13 June 2001
PDF: 6 pages
Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); doi: 10.1117/12.429570
Show Author Affiliations
Xuefeng Yao, Tsinghua Univ. and Kyushu Univ. (China)
Guan-chang Jin, Tsinghua Univ. (China)
Li-Bo Meng, Tsinghua Univ. (China)
Xiu-Mei Wen, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4317:
Second International Conference on Experimental Mechanics
Fook Siong Chau; Chenggen Quan, Editor(s)

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