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Thermal Cycling of Thin and Thick Ply Composites (1994)

Shen, James Y. ; Tompkins, Stephen S. ; Lavoie, Andre J.

In: CASI

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Publication Date: 2019-07-13

Description: An experimental study was conducted to determine the effects of ply thickness in composite laminates on thermally induced cracking and changes in the coefficient of thermal expansion (CTE). After a few thermal cycles, laminates with thick-plies cracked, resulting in large changes in CTE. CTE's of the thin-ply laminates were unaffected by microcracking during the first 500 thermal cycles, whereas, the CTE's of the thick-ply laminates changed significantly. After about 1500 cycles, microdamage had also reduced the CTE of the thin-ply laminates to a value of about half of their initial value.

Keywords: Composite Materials

Type: NASA-TM-111552 , NAS 1.15:111552 , Engineering, Construction, and Operations in SPACE IV; Feb 26, 1994 - Mar 03, 1994; Albuquerque, NM; United States

Format: application/pdf

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