CNG储气瓶的金属磁记忆检测  

Metal Magnetic Memory Testing on CNG Gas Cylinders

作　　者：王朝霞[1] 宋金刚[2] 陈克[2] 韩再学[2] 张卫民[1] 刘红光[1] 袁俊杰[1] 

机构地区：[1]北京理工大学,北京100081 [2]北京市特种设备检测中心,北京100029

出　　处：《无损检测》2007年第5期241-243,共3页Nondestructive Testing

基　　金：北京市自然科学基金资助项目(3052014);国家自然科学基金资助项目(50275012)

摘　　要：使用金属磁记忆检测方法和超声方法对在役的七组公交车CNG高压储气瓶组进行了检测,并对比分析了两种方法的检测结果。结果表明,金属磁记忆方法检测到的可疑区域涵盖了超声检测到的缺陷区域,因此用磁记忆方法检测高压储气瓶,有较高的可靠性和高效性。Metal magnetic memory technology （MMMT） is a new nondestructive testing method, which is an effective method to diagnose pressure vessels in early stage. MMMT can locate the stress concentration zones according to the status of magnetization exhibited by the object. MMMT and ultrasonic testing method were used to test seven groups of CNG high pressure gas cylinders and their results were analyzed and compared. The two methods all found the same danger areas. It indicated that MMMT is a new method with high reliability and efficiency to test high pressure gas cylinders.

关 键 词：磁记忆检测 储气瓶 应力集中 

分 类 号：TG115.28[金属学及工艺—物理冶金]