摘要
目前常规的门式起重机无损快速探伤方法主要通过采用探测设备对检测区域进行扫描识别,从而获取损伤信息,由于存在扫描盲区,导致无损探伤精度较低。对此,本文提出基于超声波信号的门式起重机无损快速探伤方法。通过采用多个相互独立且角度不同的超声探头进行组合,缩小检测扫描盲区。并结合滤波算法对采集到的超声波信号数据进行去噪处理,同时提取超声信号的时域能量特征。最后通过计算超声波信号传输往返时间,获取起重机表面裂纹缺陷的具体位置,实现无损快速探伤检测。在实验中,对提出的方法进行了无损探伤性能的检验。经实验结果表明,采用提出的方法对不同类型的裂纹缺陷进行检测时,轴向定位误差值较低,具备较为理想的探伤检测精度。
The current conventional non-destructive rapid fl aw detection method for portal cranes mainly uses detection equipment to scan the detection area to identify and thus obtain damage information,which leads to low accuracy of non-destructive fl aw detection due to the existence of scanning blind areas.In this regard,the non-destructive rapid flaw detection method of portal crane based on ultrasonic signals is proposed.By using multiple independent and different angles of ultrasonic probes for combination,the detection scan blind area is narrowed.Combined with the filtering algorithm,denoising is carried out for the collected ultrasonic signal data,while extracting the time domain energy characteristics of the ultrasonic signal.Finally,by calculating the ultrasonic signal transmission round trip time,the specific location of the crane surface crack defect is obtained to achieve nondestructive rapid fl aw detection.In the experiment,the proposed method is tested for nondestructive fl aw detection performance.The experimental results show that the axial positioning error value is low when the proposed method is used to detect different types of crack defects,and has a more desirable fl aw detection accuracy.
作者
车渝立
李群
杨泉
CHE Yu-li;LI Qun;YANG Quan(Zibo Special Equipment Inspection and Research Institute)
出处
《中国标准化》
2024年第2期172-178,共7页
China Standardization
关键词
超声波信号
起重机
无损探伤
滤波算法
ultrasonic signals
cranes
nondestructive testing
fi ltering algorithms
作者简介
车渝立,本科,高级工程师,研究方向为机械、电气设备;李群,本科,高级工程师,研究方向为特种设备检验;杨泉,硕士,高级工程师,研究方向为特种设备检验。
