Carbon fiber–reinforced plastic is a trend in the composite field since it has outstanding mechanical properties, which can be applied in several areas. For this work, carbon fiber–reinforced plastic composite using epoxy as matrix was molded by vacuum-assisted resin transfer molding to measure the individual influence of temperature and strain/stress on initial strain, permanent deformation, and modulus decay behavior of carbon fiber–reinforced plastic quantitatively. To achieve this purpose, void content, creep/recovery, and stress-relaxation properties were statistically evaluated by design of experiment approach–Taguchi method and analysis of variance. Results showed that both permanent deformation and modulus decay had influence on temperature and design of experiment confirmed that temperature is the main contributor to each response, considering all three viscoelastic regions (glassy, glass transition, and rubbery) and stress/strain.

中文翻译：

---

应用于标准化碳纤维/环氧树脂复合材料的蠕变/恢复和应力松弛测试：实验方法的设计

碳纤维增强塑料具有优异的力学性能，可应用于多个领域，是复合材料领域的发展趋势。在这项工作中，以环氧树脂为基体的碳纤维增强塑料复合材料通过真空辅助树脂传递模塑成型，以测量温度和应变/应力对碳纤维增强的初始应变、永久变形和模量衰减行为的个体影响。塑料定量。为了达到这个目的，通过实验方法设计——田口方法和方差分析，对空隙率、蠕变/恢复和应力松弛特性进行了统计评估。结果表明，永久变形和模量衰减都对温度有影响，实验设计证实温度是每个响应的主要贡献者，