AN EXPERIMENTAL STUDY OF DYNAMIC TENSILE PROPERTIES OF GLASS FIBER AT LOW-TEMPERATURES  

作　　者：Huang Wen  Xia Yuanming 

机构地区：[1]Univ Sci & Technol China, Dept Modern Mech, Hefei 230027, Peoples R China

出　　处：《Acta Mechanica Solida Sinica》2002年第3期201-207,共7页固体力学学报（英文版）

基　　金：the National Natural Science Foundation of China(No.19772058)

摘　　要：Tensile impact experiments of EC8.0-24×7 glass fiber bundles atdifferent low tempera- tures T(14 deg. C, -40 deg. C and -100 deg. C)and strain rates ε were carried out, and complete stres-straincurves were obtained. Within the range of the experiment temperaturesand strain rates, it is found that the initial modulus E, theultimate strength σ_max and the unstable strain ε_b of the glassfiber bundles all increase with ε at an identical T. At an identicalε, with the decrease of T, E and σ_max increase; but ε_b increaseswhen 14 deg. C >T>-40 deg. C and decreases when -40 deg. C>T>-100deg. C.Tensile impact experiments of EC8.0-24×7 glass fiber bundles atdifferent low tempera- tures T(14 deg. C, -40 deg. C and -100 deg. C)and strain rates ε were carried out, and complete stres-straincurves were obtained. Within the range of the experiment temperaturesand strain rates, it is found that the initial modulus E, theultimate strength σ_max and the unstable strain ε_b of the glassfiber bundles all increase with ε at an identical T. At an identicalε, with the decrease of T, E and σ_max increase; but ε_b increaseswhen 14 deg. C >T>-40 deg. C and decreases when -40 deg. C>T>-100deg. C.

关 键 词：glass fiber low temperature tensile impact Weibull distribution 

分 类 号：TB122[理学—工程力学]