混凝土/纤维增强树脂梁裂纹损伤的诊断  

Crack Diagnosis for Concrete/Fiber Rainforced Resin Beams

作　　者：贺跃进[1] 孙学红[1] 张恒[2] 魏风春[2] 

机构地区：[1]郑州轻工业学院机电工程学院,郑州450002 [2]郑州大学机械工程学院,郑州450052

出　　处：《材料导报》2009年第20期66-69,共4页Materials Reports

基　　金：国家自然基金资助项目(10472106)

摘　　要：裂纹既是复合材料梁构件的主要损伤类型之一,也是构件失效的主要原因之一。材料产生裂纹时,由于内部能量分布的变化,对外显现的动态特性会发生明显变化。对健康构件试样和裂纹损伤试样进行了大量对比研究,找到了损伤状态下动态特性的特征分布,并以此为依据建立了裂纹损伤的诊断规则。Crack is one of the chief damages in composite material beams, and it is also one of the chief reasons which results in malfunction. When crack is developed, the inner energy distribution will change, causing the apparent change of the dynamic hehaviour. With massive comparative trials to both healthy samples and damaged samples, the characteristic distribution of dynamic behaviour can be obtained, and based on it the diagnosis criteria for crack damage can he established.

关 键 词：复合材料梁 裂纹 动态特性 诊断规则 

分 类 号：TB332[一般工业技术—材料科学与工程]