玻璃钢/复合材料Issue(12)：19-24,6.
直径测定方法对碳纤维Weibull模数和断裂韧性参数的影响
EFFECTS OF DIAMETER ITSELF ON WEIBULL MODULUS AND FRACTURE TOUGHNESS OF PAN-BASED CARBON FIBER
摘要
Abstract
The effect of diameter of carbon fiber on the mechanical properties is dramatic. The diameter of carbon fiber present obvious lateral and vertical in-homogeneity. Conventional testing technique cannot characterize the diameter of carbon fiber accurately and the deviation made by testing technique is often ignored for performance of carbon fibers and composite products. In this study, two conventional and one image processing methods for testing diameter were analyzed in order to evaluate the effect of the testing technique on Weibull modulus and fracture toughness, the effects of irregular shape on the properties of the carbon fiber were studied, and scheme for correction and calibration was given. The results showed that the diameters tested by the three technique were different and in the inverse proportional relationship fracture toughness, Weibull modulus and diameter had not a linear relation ship, but could prove that the image processing method could correctly represent the diameter of the carbon fiber and the mechanical properties. The data tested by method of image processing could be considered as realistic values, and the data tested by method of SEM and calculation could be corrected through SPSS statistical software, and improve the accuracy of the carbon fiber mechanical properties effectively.关键词
碳纤维/Weibull/直径/断裂韧性/X-ray衍射Key words
carbon fibers/weibull/diameter/fracture toughness/X-ray diffraction分类
通用工业技术引用本文复制引用
王美玲,边文凤,姜兆春..直径测定方法对碳纤维Weibull模数和断裂韧性参数的影响[J].玻璃钢/复合材料,2017,(12):19-24,6.基金项目
国家自然科学基金(11072069) （11072069）
