SEDL / STP / STP893-EB / STP35349S

Effect of Impact and Fatigue Loads on the Strength of Graphite/Epoxy Composites

Avva, VS
Professor of Mechanical Engineering and graduate research assistantgraduate student, North Carolina A & T State UniversityUniversity of Maryland, GreensboroCollege Park, NCMD

Vala, JR
Senior engineer, FMC Corporation, San Jose, CA

Jeyaseelan, M
Professor of Mechanical Engineering and graduate research assistantgraduate student, North Carolina A & T State UniversityUniversity of Maryland, GreensboroCollege Park, NCMD

Pages: 11    Published: Jan 1986

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Abstract

An extensive experimental investigation on a graphite/epoxy (T300/934) composite laminate having an orientation and a stacking sequence of (±45,0,90)^2s was conducted to study the behavior of the composite material subjected to several combinations of low-velocity projectile impact and tension-tension fatigue loads. The sequence of loading (impact/cycle or cycle/impact) was changed to study its effect on the strength or the life of the composite materials. The experimental data in impact tests were compared with the corresponding results obtained by using a theoretical model.