摘要
通过在环氧浇注制品中制作模拟缺陷,对该类绝缘材料的相控阵超声检测方法进行可行性研究。首先,采用实测法对该材料在不同温度下的声速进行测量,用以设置聚焦法则和校准测量曲线;其次在校准曲线后,选用不同增益,分别采用直探头和斜探头,测量预制缺陷的深度;最后,根据测量结果,对检出限、检测准确性、信噪比以及检测数据稳定性进行分析,从而论证所提方法的可行性。试验结果表明,相控阵超声检测技术的穿透能力较强,能够完成对环氧浇注制品的检测,但对检测人员的要求较高,检测时间较长,效率较低。
Feasibility study on phased array ultrasonic testing method was carried out for insulation materials of epoxy casting products by simulating defects.Firstly,the sound velocity of the material at different temperatures was measured using the actual measurement method to set the focusing rule and calibrate the measurement curve;secondly,after calibrating the curve,different gains were selected and the depth of the prefabricated defect was measured using a straight probe and an oblique probe,respectively;finally,based on the measurement results,the detection limit,detection accuracy,signal-to-noise ratio,and stability of the detection data were analyzed to demonstrate the feasibility of this method.The experimental results showed that phased array ultrasonic testing had strong penetration ability and can complete the testing of epoxy casting products,but it required high requirements for testing personnel,took a long time for testing,and had low efficiency.
作者
王远
任毅
王刚
李辉
于长乐
WANG Yuan;REN Yi;WANG Gang;LI Hui;YU Changle(Xi'an XD Switchgear Electric Co.,Ltd.,Xi'an 710077,China;Shaanxi Sifang Testing Technology Co.,Ltd.,Xi'an 710008,China)
出处
《无损检测》
CAS
2024年第10期59-64,共6页
Nondestructive Testing
关键词
环氧浇注制品
相控阵超声检测
可行性
epoxy casting product
phased array ultrasonic testing
feasibility
作者简介
通信作者:王远(1983-),男,本科,工程师,主要从事电工材料领域的研究与检测工作,857144226@qq.com。
