镁合金壳体的超声相控阵检测方法  

Ultrasonic phased array testing method for magnesium alloy shell

作　　者：梁佳佳[1] 李雄兵[1] 倪培君[2] 吕铎[1] 

机构地区：[1]中南大学CAD/CAM研究所,湖南长沙410075 [2]中国兵器科学研究院宁波分院,浙江宁波315103

出　　处：《兵器材料科学与工程》2014年第4期108-111,共4页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(61271356;51205031);国家高技术研究发展(863)计划(2012AA03A514);湖南省自然科学基金(14JJ2002);中南大学研究生自主探索创新基金(2014zzts200)

摘　　要：针对镁合金炮弹壳体提出一种超声相控阵检测方法:设计基于多轴试验台的相控阵自动检测系统,在此基础上研究声束的型面跟踪及控制方法;确定最优的超声相控阵检测工艺,并建立基于相控阵全矩阵数据的全聚焦成像方法。设计并制作炮弹壳体的平底孔及凹槽缺陷,采用该方法进行超声相控阵成像并与传统单探头检测方法进行对比分析,从检测效率及精度验证该方法的有效性。An ultrasonic phased array testing method for magnesium alloy shell was proposed. First, an automatic phased array testing system was designed based on multi-DOF test rig, and on this basis, the tracking and control method of acoustic beam type surface was studied. Then the optimal ultrasonic phased array testing process was carried out. A total focusing imaging method was presented according to phased array full matrix data. Finally, the flat-bottomed holes and notches were designed and manufactured in the shell. Compared with traditional single-probe testing method, the method proposed is proved to be better in testing efficiency and accuracy.

关 键 词：超声相控阵 镁合金壳体 缺陷检测 型面跟踪 超声成像 

分 类 号：TG115.28[金属学及工艺—物理冶金]