Thermally induced transverse cracking in graphite-epoxy cross-ply laminates

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · J. Reinf. Plast. Compos.; (United States)

DOI:https://doi.org/10.1177/073168448600500301· OSTI ID:6954399

Adams, D S; Bowles, D E; Herakovich, C T

Thermally induced transverse cracking in T300/5208 graphite-epoxy cross-ply laminates was investigated experimentally and theoretically. The six laminate configurations studied were: 0/90(3)s, 0(2)/90(2)s, 0(3)/90s, 90/0(3)s, 90(2)/0(2)s, and 90(3)/0s. The thermal load required to initiate transverse cracking was determined experimentally and compared to a theoretical prediction. Experimental results for the accumulation of transverse cracks under cyclic thermal loading between - 250 and 250 F for up to 500 thermal cycles are presented. The calculated in situ transverse-lamina strength was determined to be at least 1.9 times the unidirectional-lamina transverse tensile strength. All laminate configurations exhibited an increase in crack density with increasing thermal cycles. 8 references.

• Research Organization: Virginia Polytechnic Institute and State Univ., Blacksburg
• OSTI ID: 6954399
• Journal Information: J. Reinf. Plast. Compos.; (United States), Journal Name: J. Reinf. Plast. Compos.; (United States) Vol. 5; ISSN JRPCD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
CARBON
COMPOSITE MATERIALS
CRACK PROPAGATION
CRACKS
ELEMENTAL MINERALS
ELEMENTS
EPOXIDES
FRACTURE MECHANICS
GRAPHITE
LAMELLAE
MATERIALS
MECHANICS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
STRESS ANALYSIS
STRESSES
THERMAL STRESSES