摘要
复合材料遭受低能量冲击后其表面损伤是复合材料受冲击后观察以及描述的最直接部位。将复合材料损伤程度划分为5个等级,并且基于模糊贴近度评判方法,建立复合材料低能量冲击表面损伤信息与其损伤级别之间的联系。采用超景深显微镜,对复合材料冲击试件的表面损伤进行观察、记录、分析,结合模糊贴近度评判的方式,建立损伤程度与贴近度阀值之间的数值关系。并且经实例验证,不同的复合材料、不同的厚度在表面损伤表现有相同特征的时候,可通过本文的表征方法判定为相同的损伤级别。
Surface damage is the most direct observation and description of composite after impact. In this paper,the damage degree of composite materials is divided into five grades. Based on the fuzzy closeness evaluation method,the relationship between the damage information and the damage level of the low energy impact surface of composite materials is established. In this paper,the superficial depth microscope is used to observe,record,and analyze the surface damage of composite impact specimens. By combining with the fuzzy assessment method of progress assessment,a numerical relationship between the damage level and the posting progress threshold is established. It is proved that the same damage level can be determined by the characterization method of this paper when the surface damage of different composite materials and different thickness has the same characteristics.
作者
许国栋
李地红
吴昊宇
张景卫
夏娴
王艳君
XU Guo-dong;LI Di-hong;WU Hao-yu;ZHANG Jing-wei(College of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
出处
《玻璃钢／复合材料》
CAS
北大核心
2019年第2期45-50,共6页
Fiber Reinforced Plastics/Composites
基金
国家自然科学基金(51573018)
关键词
复合材料层合板
低能量冲击
损伤级别
隶属函数
贴近度
composite laminates
low energy impact
damage level
membership function
close degree
