Effect of Time at Load on Fatigue Response of [(0/ ± 45/90) ] T300/5208 Graphite-Epoxy Laminate

GP Sendeckyj; HD Stalnaker

doi:10.1520/STP26934S

SYMPOSIA PAPER Published: 01 January 1977

STP26934S

Effect of Time at Load on Fatigue Response of [(0/ ± 45/90) ] T300/5208 Graphite-Epoxy Laminate

Source

Results of an experimental program, designed to test a time at load fatigue failure hypothesis for composites, are discussed. In order to minimize the influence of various test and material variables, testing was performed using a trapezoidal loading waveform with constant loading rates and sufficiently long hold times at load to minimize the effect of hysteresis heating. The results indicate that the fatigue life of [(0/ ±45/90)_s]₂ T300/5208 graphite-epoxy specimens can be explained by using time at load as a fatigue criterion.

Author Information

Sendeckyj, GP

Structural Mechanics Division, Air Force Flight Dynamics Laboratory, Wright-Patterson Air Force Base, Ohio

Stalnaker, HD

Structural Mechanics Division, Air Force Flight Dynamics Laboratory, Wright-Patterson Air Force Base, Ohio

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Details

Developed by Committee: D30

Pages: 39–52

DOI: 10.1520/STP26934S

ISBN-EB: 978-0-8031-4690-7

ISBN-13: 978-0-8031-4490-3

Effect of Time at Load on Fatigue Response of [(0/ ± 45/90) ] T300/5208 Graphite-Epoxy Laminate

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