Prediction of fiber-directional flexural strength of carbon fiber-reinforced polypropylene based on time–temperature superposition principle
Prediction of fiber-directional flexural strength of carbon fiber-reinforced polypropylene based on time–temperature superposition principle
复制标题
基于时间-温度叠加原理预测碳纤维增强聚丙烯纤维方向弯曲强度
DOI：
10.1177/0021998317714638
复制
发表时间：
2018
影响因子：
2.9
通讯作者：
K. Kageyama
中科院分区：
文献类型：
--
作者：
T. Matsuo;M. Nakada;K. Kageyama
本研究通过构建热塑性树脂松弛模量随时间和温度变化的主曲线，验证了纤维方向弯曲强度的时温叠加原理可以应用于经历冲击破坏等瞬时快速现象和蠕变破坏等长期现象的热塑性复合材料。该主曲线可以转化为另一条主曲线，该主曲线基于主要由树脂的弹性模量表示的微屈曲失效理论预测碳纤维增强热塑性复合材料的纤维方向弯曲强度。高速弯曲试验、不同温度下的静态弯曲试验和蠕变弯曲试验结果表明，在各种试验条件下，试样的压缩表面均发生了弯折带破坏。与热塑性复合材料相关的这种验证和验证使得预测任意温度下的静态和动态弯曲强度以及蠕变弯曲强度成为可能。
This study verified that the time–temperature superposition principle for fiber-directional flexural strength can be applied to thermoplastic composites undergoing instantaneous fast phenomena such as impact failure and long-term phenomena such as creep failure, by constructing the time- and temperature-dependent master curve of relaxation modulus of thermoplastic resin. The master curve could be transformed to another master curve that predicts fiber-directional flexural strength of carbon fiber-reinforced thermoplastic composites based on the micro-buckling failure theory expressed mainly by the resin’s elastic modulus. The experimental results obtained from high-speed bending test, static bending test at various temperatures, and creep bending test demonstrated that kink band failure occurred on the compressive surface of the specimen at every test condition. This validation and verification related to thermoplastic composites made it possible to predict static and dynamic flexural strengths at arbitrary temperature and creep flexural strength.
应力强度控制的动态裂纹扩展和具有统计变异性的应力历史相关寿命预测
DOI：
--
发表时间：
2006
期刊：
Intenational Journal of Fracture 137
影响因子：
--
作者：
R.Christensen;Y.Miyano
通讯作者：
Y.Miyano