摘要
DAC曲线即距离-波幅曲线,是JB/T4730—2005承压设备无损检测标准中必须制作的一组曲线,其用途是为了判定缺陷的大小,给验收标准提供依据.经过多年的超声波探伤实验,总结出利用超声波探伤仪和试块在坐标纸上快速准确制作DAC曲线的方法,为实际探伤提供可靠依据.
DAC curve that is distance-wave amplitude curve,is JB/T4730-2005 pressure equipment nondestructive testing standards must be produced in a set of curves,its use is to determine the size of the defect,to provide a basis for acceptance criteria.After years of ultrasonic flaw detection experiments,the method of using ultrasonic flaw detectors and test blocks to quickly and accurately produce DAC curves on coordinate paper is summarized to provide a reliable basis for actual flaw detection.
作者
郝光香
徐京明
王为
HAO Guangxiang;XU Jingming;WANG Wei(School of Mechanics and Electronics Engineering,Qiqihar University,Qiqihar 161006,China;School of Mechanical Engineering,Xinjiang University,Urumqi 830046,China)
出处
《高师理科学刊》
2021年第5期44-46,共3页
Journal of Science of Teachers＇College and University
基金
2019黑龙江省(齐齐哈尔大学)大学生创新创业训练计划项目(201910232224)。
关键词
超声波探伤
DAC曲线
衰减
ultrasonic flaw detection
DAC curve
attenuation
