Cryogenic fatigue behavior of plain weave glass/epoxy composite laminates under tension–tension cycling

This paper focuses on understanding the tension–tension fatigue behavior of woven glass fiber reinforced polymer laminates at cryogenic temperatures. Tension–tension fatigue tests at frequencies of 4 and 10 Hz with a stress ratio of 0.1 were conducted at room temperature, 77 and 4 K. The fatigue stress versus cycles to failure (S–N) relationships and fatigue limits for 106 cycles were obtained. Fractured specimens tested under fatigue tests were also examined with optical microscope.