STRAIN RATE AND TEMPERATURE EFFECTS ON THE TENSILE BEHAVIOR OF FIBER REINFORCED POLYMER COMPOSITES
High performance fiber reinforced polymers(FRP)are now commonly used in structural and aerospace systems due to their outstanding features and excellent mechanical performance.Despite the benefits of using FRP over traditional materials,one of the major impediments to its wider utilization is the limited information of the mechanical performance under coupling effect of medium strain rates and different temperatures.In present work,the effects of strain rate and temperature on the tensile properties of glass,basalt and carbon fiber reinforced polymer(GFRP,BFRP and CFRP)fabricated using vacuum assisted resin infusion(VARI)are investigated.The tensile tests are conducted at four nominal strain rates(25,50,100 and 200 s-1)and six temperatures(-25,0,25,50,75 and 100 ℃)on a servo-hydraulic high-rate testing system.The results show that the dynamic properties of CFRP,GFRP and BFRP,in terms of tensile strength and toughness which generally increase with the increasing strain rate; and CFRP exhibits higher tensile strength and toughness than GFRP and BFRP.The effect of temperature on the tensile strength is not pronounced until it reaches 100 ℃ for all kinds of FRP.While the increase of temperature leads to reduction in toughness when above 25 ℃.In addition,CFRP shows the highest strength and toughness under all temperatures.To sum up,the mechanical properties of CFRP,GFRP and BFRP are highly dependent on the strain rates and temperatures investigated.
Dynamic behavior FRP strain rate effect temperature effect mechanical properties
Deju Zhu Yiming Yao Anling Li
College of Civil Engineering,Hunan University,Changsha,Hunan,410082,China School of Sustainable Engineering and Built Environment,Arizona State University,Tempe,AZ,85287,Unit
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2017-07-19（万方平台首次上网日期，不代表论文的发表时间）