Tensile and compressive failure modes of laminated composites loaded by fatigue with different mean stress

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Journal of Composites Technology and Research; (USA)

OSTI ID:5939874

Rotem, A ^[1]

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1. NASA, Ames Research Center, Moffett Field, CA (USA)

Laminated composite materials tend to fail differently under tensile or compressive load. Under tension, the material accumulates cracks and fiber fractures, while under compression, the material delaminates and buckles. Tensile-compressive fatigue may cause either of these failure modes depending on the specific damage occurring in the laminate. This damage depends on the stress ratio of the fatigue loading. Analysis of the fatigue behavior of the composite laminate under tension-tension, compression-compression, and tension-compression had led to the development of a fatigue envelope presentation of the failure behavior. This envelope indicates the specific failure mode for any stress ratio and number of loading cycles. The construction of the fatigue envelope is based on the applied stress-cycles to failure (S-N) curves of both tensile-tensile and compressive-compressive fatigue. Test results are presented to verify the theoretical analysis. 8 refs.

• OSTI ID: 5939874
• Journal Information: Journal of Composites Technology and Research; (USA), Journal Name: Journal of Composites Technology and Research; (USA) Vol. 12; ISSN 0885-6804; ISSN JCTRE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
COMPOSITE MATERIALS
COMPRESSION
CRACK PROPAGATION
DAMAGE
DATA
FAILURES
FATIGUE
FRACTURE PROPERTIES
INFORMATION
LAYERS
MATERIALS
MECHANICAL PROPERTIES
NUMERICAL DATA
TENSILE PROPERTIES
THEORETICAL DATA