Effects of γ-Ray Irradiation on the Fatigue Strength, Thermal Conductivities and Thermal Stabilities of the Glass Fibres/Epoxy Resins Composites
Effects of γ-Ray Irradiation on the Fatigue Strength, Thermal Conductivities and Thermal Stabilities of the Glass Fibres/Epoxy Resins Composites
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DOI：
10.1007/s40195-017-0692-2
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发表时间：
2018-02
期刊：
影响因子：
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通讯作者：
Linmei Zheng;Lu Wang;Zhaohua Wang;Li Wang
中科院分区：
文献类型：
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作者：
Linmei Zheng;Lu Wang;Zhaohua Wang;Li Wang
玻璃纤维/环氧树脂复合材料是制造高能物理和核物理实验支撑仪器的理想材料。研究了γ射线辐照对玻璃纤维/环氧树脂复合材料疲劳强度、导热系数和热稳定性的影响。建立了双参数疲劳寿命模型，对复合材料的疲劳寿命进行了预测。结果表明，γ-射线辐照可能会导致环氧树脂的降解，但对玻璃纤维几乎没有损伤。γ辐照处理在低周疲劳阶段对复合材料的疲劳强度有显著影响，而在高周疲劳阶段影响很小。此外，经γ射线辐照后制备的玻璃纤维/环氧树脂复合材料仍具有优异的疲劳强度、理想的导热系数、显著的尺寸稳定性和热稳定性，能够满足高能和核物理实验条件下支撑仪器正常运行的实际要求。
Glass fibres/epoxy resins composites have been performed as ideal materials to make support instruments for high-energy and nuclear physics experiments. The effects of the γ-ray irradiation on the fatigue strength, thermal conductivities and thermal stabilities of the glass fibres/epoxy resins composites were investigated. And a two-parameter fatigue life model was established to predict the fatigue life of the composites. Results revealed that the γ-ray irradiation could probably result in the degradation of epoxy resins, but hardly damage to the glass fibres. And the γ-ray irradiation treatment could significantly affect the fatigue strength of the composites at a low-cycle fatigue stage, but seldom influence at a high-cycle fatigue stage. Furthermore, the fabricated glass fibres/epoxy resins composites after the γ-ray irradiation still presented excellent fatigue strength, ideal thermal conductivities, remarkable dimensional and thermal stabilities, which can meet the actual requirements of normal operation for supporting instruments under high-energy and nuclear physics experiments.