薄壁管探伤中水声程公式分析  

DISCUSSION ON FORMULA OF ACOUSTIC LENGTH IN WATER FOR ULTRASONIC TESTING OF THIN-WALL TUBES

作　　者：彭应秋[1] 朱惠[1] 郑开胜[2] 

机构地区：[1]南昌航空工业学院,南昌330034 [2]宝鸡有色金属加工厂,宝鸡721014

出　　处：《无损检测》1998年第3期65-68,共4页Nondestructive Testing

基　　金：航空科学基金资助项目

摘　　要：多年来,H=F-(R^2-L^2)^(1/2)被认为是中小直径薄壁管超声水浸聚焦探伤法的最佳水声程公式.但实际探伤中最佳水声程和由此式计算出来的理论最佳水声程有时出入较大.对此原因进行了分析,并提出了确定最佳声程的方法.Of recent years, H = F-R2-L2^(1/2) has been considered as optimum formula of acoustic length in water for ultrasonic testing of thin-wall tubes. But in practice, there are obvious errors between the calculating results from the formula and the optimum data from experiments. The causes resulting the errors are analyzed and the method for determining optimum lenth is given.

关 键 词：超声检测 薄壁管 水声程公式 水浸聚焦探伤 

分 类 号：TG115.285[金属学及工艺—物理冶金]