基于超声相控阵的再制造曲轴缺陷检测方法研究  

Detection method for remanufactured crankshaft based on ultrasonic phased array technology

作　　者：闫晓玲[1] 董晓云[1] 王新月[1] 朱盈昱[1] 王望龙[2] 

机构地区：[1]北京工商大学材料与机械工程学院,北京102488 [2]装甲兵工程学院装备再制造工程系,北京100072

出　　处：《现代制造工程》2013年第10期20-24,共5页Modern Manufacturing Engineering

基　　金：国家自然科学基金资助项目(50975287);北京工商大学2013大学生创业与科研行动计划项目;北京工商大学学科与研究生教育--学科建设综合计划项目(PXM2012_014213_000059)

摘　　要：旧曲轴再制造是再制造技术在汽车发动机中应用的典型实例之一。再制造前,旧曲轴质量的检测与评估非常关键,关系到旧曲轴可否进行再制造。由于曲轴结构的特殊性,常规超声检测方法需要更换多个检测探头,且很容易漏检和误判。利用CIVA软件模拟了基于超声相控阵技术的再制造曲轴连杆轴颈内侧过渡圆角处裂纹缺陷的无损检测方法,制定了切实可行的检测工艺方案。采用Multi X系列超声相控阵检测系统对旧曲轴连杆轴颈内侧过渡圆角处真实疲劳裂纹进行了检测,实验结果表明,采用预先制定的工艺方案,可以检测出裂纹的位置和长度,对裂纹缺陷的辨识和定位、定量分析更加便捷和准确。Old crankshaft remanufacturing is one of the typical examples of application of remanufacturing technology in the auto- motive engine. Before remanufacturing, the testing and evaluation of old crankshaft quality is critical,it is related to the possibility of remanufacturing. Due to the particular structure of the crankshaft, multiple detection probes need to be replaced using conven- tional ultrasonic testing methods, and some defects can be missed and misjudgment easily. By use of CIVA software, the detection method for R corner defect of remanufactured crankshaft based on ultrasonic phased array technology is simulated, and developed a practical detection process. The Multi X series ultrasonic phased array inspection system are used to detect the real fatigue cracks in R corner of the old crankshaft, experimental results show that according to the pre-established process scheme, the crack＇s location and length can be detected, the defect＇ s identification and localization, quantitative analysis is more convenient and accurate.

关 键 词：超声相控阵 再制造 曲轴 裂纹检测 

分 类 号：TG115.28[金属学及工艺—物理冶金] TM343[金属学及工艺—金属学]