材料科学与工程学报2017，Vol.35Issue(2)：219-223,273,6.DOI:10.14136/j.cnki.issn 1673-2812.2017.02.010
碳纤维复合材料假脚冲击后的疲劳试验
Fatigue Experiment of Carbon Fiber Composites Prosthetic Foot after Impact
摘要
Abstract
Experiment studies on drop-weight impact and fatigue life were performed for a novel carbon fiber composites prosthetic foot.The influences of layer parameter and impact energy on the impact damage and fatigue life of the carbon fiber composites prosthetic foot were analyzed.Results show that,layer parameter has significant influence on the impact damage of U-type component of carbon fiber composites prosthetic foot.With the decrease of 0° layer content,the impact damage area gradually reduces,and surface damage is becoming serious.The fatigue properties of carbon fiber composites are susceptible to the impact energy.With the increase of impact energy,the impact damage area of U-type component increases and fatigue life decreases.On the condition of the impact energy increasing from 4J to 10J,the fatigue life of the carbon fiber composites prosthetic foot drops dramatically by 66.8％.Although the fatigue life deduces with the increasing impact energy,both of them are not of linear relationship.A threshold exists for the impact energy.As the impact energy is higher than the threshold,the influence of impact energy on fatigue life of carbon fiber composites will be weakened.The U-type component with the thickness of 2.7mm and the impact energy less than 4J are necessary conditions for the fatigue life of the carbon fiber composites prosthetic foot,being satisfied with the safety standard.关键词
假脚/冲击损伤/疲劳寿命/碳纤维复合材料Key words
prosthetic foot/impact damage/fatigue life/carbon fiber composites分类
通用工业技术引用本文复制引用
崔海坡,陈婷婷,王双情..碳纤维复合材料假脚冲击后的疲劳试验[J].材料科学与工程学报,2017,35(2):219-223,273,6.基金项目
国家自然科学基金资助项目(51305268),上海工程技术研究中心资助项目(15DZ2251700) （51305268）
