Abstract
Residual strength of chop strand mats glass fiber/epoxy composites due to different hygrothermal conditions was investigated. All residual tests were carried out according to ASTM D 3479 and D 3039 on tension-tension fatigue with frequency of 5 Hz, stress ratio of R=0.5 and maximum stress, @max = 60MPa. The obtained residual strength curves were used to investigate the strength of chop strand mats glass fiber/epoxy under the effect of temperature and interactive environment of water absorption and temperature. The results showed that, the chop strand mats glass fiber/epoxy has a high resistance towards the tension-tension fatigue loading. However, the degradation of tensile residual strength of chop strand mats glass fiber/epoxy is significant at high water absorption at elevated temperatures.
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