CAJ | 학술논문

在描述纤维增强复合材料试件的拉伸实验中,根据试件中纤维的展布方向与拉伸荷载方向的夹角,把试件做成0°~90°每15°一个试件,并分为3种方案测出复合材料试件各个角度下的弹性模量、泊松比和应力应变曲线等参量。实验结果表明：当纤维展布方向与外载荷方向一致时,纤维对材料的增强效果最为明显;不同主纤维角度试件的弹性模量、弹性强度、极限强度和能量释放率等参量随主纤维角度的变化趋势一致,先急剧下降然后缓慢的升高。
재묘술섬유증강복합재료시건적랍신실험중,근거시건중섬유적전포방향여랍신하재방향적협각,파시건주성0°~90°매15°일개시건,병분위3충방안측출복합재료시건각개각도하적탄성모량、박송비화응력응변곡선등삼량。실험결과표명：당섬유전포방향여외재하방향일치시,섬유대재료적증강효과최위명현;불동주섬유각도시건적탄성모량、탄성강도、겁한강도화능량석방솔등삼량수주섬유각도적변화추세일치,선급극하강연후완만적승고。
This article describes the tensile test of fiber-reinforced composites.According to the angle between the distribution of fiber orientation and the direction of the tensile load,the samples are made from 0 to 90 degrees every 15 degrees of a sample.This experiment considered two programs to measure the elastic modulus、 Poisson＇s ratio and stress-strain curves,and other parameters of the composite samples.Experiments show that： when fiber orientation and distribution along the applied load,enhanceing effectiveness of material is the most obvious.Four parameters such as the elastic modulus,elastic strengths,ultimate strengths and energy release rates of the each group specimens present the same variation trend with the main fiber angles increasing,namely,declining sharply at first,and then rising slowly.