Experimental characterization of continuous alumina-fiber/epoxy

Miscellaneous · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5470185

Gu, Yijun

The mechanical properties were investigated at ambient and cryogenic temperatures. The experimental research includes compressive-strength tests of lamina and laminate, and laminate compressive fatigue. The surfaces of the damaged specimens were examined with scanning electron microscopy to reveal failure mechanisms. It was found that under a static load the compressive behavior of FP/Epoxy depends on fiber orientations, stacking sequences, and temperatures. Fibers parallel to the loading direction possess the highest Young's modulus and the lowest ultimate strain, and fibers transverse to the loading direction have the lowest modulus and the highest ultimate strain; crossply laminates are intermediate. The compressive strengths at 77K are higher than at 295K, and Young's moduli are about the same at 77K and at 295K. Visual observations and an SEM examination of fractured specimens reveal that the loading methods, fiber orientations, testing temperatures, and reinforcing materials influence the failure modes and failure mechanisms of FP/Epoxy composites.

• Research Organization: Wisconsin Univ., Madison, WI (United States)
• OSTI ID: 5470185
• Resource Relation: Other Information: Thesis (Ph.D.)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
MECHANICAL PROPERTIES
COMPOSITE MATERIALS
EPOXIDES
AMBIENT TEMPERATURE
COMPRESSION STRENGTH
FATIGUE
FIBERS
FRACTURE PROPERTIES
REINFORCED MATERIALS
TEMPERATURE RANGE 0065-0273 K
ALUMINIUM COMPOUNDS
CHALCOGENIDES
MATERIALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
TEMPERATURE RANGE
360603* - Materials- Properties