CAJ | 학술논문

采用工程上常用的铺层角度，设计7组不同的铺层方式，通过拉伸与压缩实验研究了多向玻璃纤维(GF)／碳纤维(CF)混杂复合材料的拉伸和压缩性能，得到了拉伸与压缩过程中力–位移曲线图及相应的破坏形貌。提出了铺层角度混杂比(CF相对体积分数)的概念，研究了不同铺层角度的混杂比对复合材料拉伸和压缩性能的影响。结果表明，多向纤维混杂复合材料的拉伸与压缩性能与总混杂比无明显关系，而与不同铺层角度各自的混杂比有关。其中，0°铺层混杂比对其影响最大，90°铺层混杂比影响最小，±45°铺层混杂比的影响介于两者之间。当0°铺层混杂比为100%时，复合材料的拉伸与压缩性能最高，拉伸破坏表现为一次破坏，破坏时层间分离的程度最低；当0°铺层混杂比低于100%时，复合材料的拉伸破坏表现为二次破坏。复合材料的压缩破坏大多表现为一次破坏，且在破坏时GF的破坏大多表现为“屈曲失稳”的形式，从而减缓了CF的脆性断裂程度。
채용공정상상용적포층각도，설계7조불동적포층방식，통과랍신여압축실험연구료다향파리섬유(GF)／탄섬유(CF)혼잡복합재료적랍신화압축성능，득도료랍신여압축과정중력–위이곡선도급상응적파배형모。제출료포층각도혼잡비(CF상대체적분수)적개념，연구료불동포층각도적혼잡비대복합재료랍신화압축성능적영향。결과표명，다향섬유혼잡복합재료적랍신여압축성능여총혼잡비무명현관계，이여불동포층각도각자적혼잡비유관。기중，0°포층혼잡비대기영향최대，90°포층혼잡비영향최소，±45°포층혼잡비적영향개우량자지간。당0°포층혼잡비위100%시，복합재료적랍신여압축성능최고，랍신파배표현위일차파배，파배시층간분리적정도최저；당0°포층혼잡비저우100%시，복합재료적랍신파배표현위이차파배。복합재료적압축파배대다표현위일차파배，차재파배시GF적파배대다표현위“굴곡실은”적형식，종이감완료CF적취성단렬정도。
Seven group lay-up means were designed using common lay-up angle in in engineering and the tensile and compression properties of multi-directional hybrid composites reinforced by glass fiber (GF) and carbon fiber (CF) were gained, the force-displacement curves and corresponding damage morphology were got by experimental research. A conception of lay-up angle hybrid ratio (the relative volume fraction of CF) was proposed and the influences of different lay-up angle hybrid ratio on the tensile elastic modulus,tensile strength,compression elastic modulus and compression strength of the composites were also studied. The results show that the tensile and compression properties of the composites have little relation with the total hybrid ratio,but are related to the angle hybrid ratio. Among which,the 0° hybrid ratio affects the properties the most while 90° hybrid ratio the least,45° hybrid ratio is between both. When the 0° hybrid ratio reaches 100%,both the tensile and compression properties of the composites show the best,it’s fracture mode is disposable damage and delamination is not the most obvious. When the 0° hybrid ratio is lower than 100%, the tensile failure mode turns out to be a secondary damage. Most of the compression failure modes are disposable damage. The fracture of most GF is buckling so that the brittle fracture of CF is slowed down.