超限厚度嵌入式焊缝超声相控阵检测仿真与实现
Simulation and implementation of ultrasonic phased array inspection for embedded welds with excess thickness
王洪涛 1吴伟 1王祖悦 2陈乐2
作者信息
- 1. 南昌航空大学 测试与光电工程学院,南昌 330063
- 2. 上海市特种设备监督检验技术研究院,上海 200062
- 折叠
摘要
针对高端装备超限厚度焊缝超声检测灵敏度低、缺陷定位困难、容易产生漏检误判等问题,以某70 MPa高压消声水罐超限厚度装备嵌入式接管与筒体对接接头为对象,开展超声相控阵检测仿真和工艺研究.在CIVA仿真平台上建立三维模型,通过全因子试验分析不同偏转方式下声场强度分布,仿真探讨不同检测工艺参数对实际检测结果的影响,并采用分区域角度对缺陷位置进行修正.仿真和实际测试表明,利用一次横波多层扇扫扫查,可以实现440 mm超限厚度焊缝全覆盖检测,同时采用分区域修正法解决了嵌入式管-管连接焊缝周向检测曲率变化大、定位不准确的问题,可为制定高端装备超限厚度焊接接头相控阵检测工艺标准提供参考.
Abstract
To solve the problems of low sensitivity,difficulty in defect location,and easy occurrence of missed inspection and misjudgment in ultrasonic testing of welds with excess thickness for hig-end equipment,a study on ultrasonic phased array testing simulation and process was conducted,taking the embedded welds of the butt joint between the nozzle and the cylinder of a 70 MPa high pressure anechoic water tank as the object.A three-dimensional model was established on the CIVA simulation platform.It was analyzed that the intensity distribution of acoustic field under different focusing laws through full factor experiments.It was discussed that the influence of different testing process parameters on actual testing results by simulation.And the defect position was corrected from a regional perspective.Simulation and actual testing results indicate that it can achieve full coverage testing of 440 mm thickness welds that using the multi-layer sector-scan of primary shear wave.At the same time,it is solved that the problems of large curvature change and inaccurate defect location in the circumferential testing of welded joints in plug-in pipe connections by correction method for different regions.The method provides a reference for formulating phased array testing process standards for welded joints with excess thickness.
关键词
超声相控阵/超限厚焊缝/CIVA仿真/缺陷定位Key words
ultrasonic phased array/excess thickness weld/CIVA simulation/defect location引用本文复制引用
基金项目
南昌航空大学研究生创新专项(YC2022-085)
出版年
2024
国家科技期刊平台
NSTL
万方数据