基于超声热波技术的复合材料冲击损伤检测研究  

Impact damage detection of composites based on ultrasonic thermography technique

作　　者：张炜[1] 罗文源 王冬冬[1] 杨正伟[1] 田干[1] 

机构地区：[1]第二炮兵工程大学 [2]63612部队

出　　处：《固体火箭技术》2013年第6期836-841,共6页Journal of Solid Rocket Technology

基　　金：国家自然科学基金(51075390;51275518);陕西省自然科学基金(2012QJ8018;2013JM7021)

摘　　要：采用超声热波技术对复合材料冲击损伤进行了检测研究。采用数值分析模拟了超声激励下复合材料冲击损伤部位的摩擦生热及热传导过程,分析了不同类型损伤的生热情况。在制作试件并进行低速冲击试验的基础上,利用超声热波检测系统对其进行检测,并对检测结果的影响因素进行了分析。结果表明,超声热波技术可快速有效地检测到复合材料冲击损伤;加载接触力为200 N,加载幅值为100%时检测效果最好;冲击损伤类型基体开裂、纤维断裂及分层在红外热图中具有不同的表现形式。Based on the ultrasonic infrared thermography （UT） technique,the impact damage on composite was inspected.The frictional heating and thermal conductivity at the damage of composite under ultrasonic stimulation was simulated by numerical meth- od, and different types of damage were studied.Specimens were designed and detected by the system of ultrasonic thermography after impact test at low velocity.Results show that UT method is a rapid and effective solution to detect the impact damage of composite; When the loading contact force reaches 200 N, and the loading amplitude reaches 100%, the detection effect is the best; Different types of impact damage such as matrix cracking,fiber fracture and delamination have their own characteristic in the thermography.

关 键 词：超声热波技术 复合材料 冲击损伤 检测 

分 类 号：V258[一般工业技术—材料科学与工程] TG115.28[航空宇航科学与技术—航空宇航制造工程]