作者：陆铭慧, 邓勇, 刘勋丰
作者单位：南昌航空大学无损检测技术教育部重点实验室, 江西 南昌 330063
关键词：超声相控阵;曲轴R区域;VB;辅助检测软件
摘要：
针对曲轴结构复杂的特性，开展超声相控阵技术在某型曲轴R区域检测中的应用研究。首先，建立曲轴R部位的声束覆盖模型，研究超声相控声束对曲轴R部位的覆盖及反射特点；然后，用超声相控阵方法对曲轴R区域进行检测实验，采用弧面楔块，改善声耦合效果；用VB编写的辅助检测软件，对回波信号进行定位和分析。实验对象为带人工缺陷的三拐曲轴，利用相控阵多角度声束扫查功能对其进行检测，将相控阵系统得到的回波信号数据输入辅助软件对缺陷进行定位，其定位绝对误差2 mm，并且缺陷位置显示直观，有利于判别。实验研究结果表明：利用超声相控阵成像技术和辅助检测软件相结合的手段有助于曲轴R区域缺陷的快速检测和准确评价。
Research on ultrasonic phased array testing method in crankshaft R-area
LU Minghui, DENG Yong, LIU Xunfeng
Key Laboratory of Nondestructive Test of Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China
Abstract: According to the complicated characteristics of the crankshaft structure, research on the application of ultrasonic phased array technology in the R-area of a certain type of crankshaft was carried out. Firstly, R-area beam coverage model of the crankshaft was established and the crankshaft R-area coverage and reflection characteristics of ultrasonic phased array beam were studied on. Secondly, ultrasonic phased array method was applied to test the crankshaft R-area and cambered wedge was adopted to improve the surface acoustic coupling effect. Auxiliary testing software designed by VB was used for the positioning and analysis of echo signal. The experiment subject is a three-throw crankshaft with artificial defects, which was tested with the multi-angle acoustic beam of ultrasonic phased array. The echo signal data obtained from ultrasonic phased array system was input to auxiliary testing software to locate defect and the absolute error of positioning was less than 2 mm. The location of defects is visual and it is conducive to distinguishment. The research results showed that combining ultrasonic phased array imaging technology and auxiliary testing software is conducive to rapid detection and accurate evaluation of defects in crankshaft R-area.
Keywords: ultrasonic phased array;crankshaft R-area;VB;auxiliary testing software
2016, 42(7): 97-102 收稿日期: 2015-10-25;收到修改稿日期: 2015-12-25
基金项目:
作者简介: 陆铭慧(1963-),男,黑龙江齐齐哈尔市人,副教授,主要从事超声检测。
参考文献
[1] 刘日胜,向大学,阳恒钊. 发动机曲轴失效分析与材料应用新进展[J]. 机电一体化,2014(2):45-50.
[2] 刘红福,周先忠,于秋明,等. 汽车发动机曲轴扭转疲劳失效形式与原因分析[J]. 失效分析与预防,2015,10(1):57-61.
[3] HOU X Q, LI Y, JIANG T. Fracture failure analysis of ductile cast iron crankshaft in a vehicle engine[J]. Journal of Failure Analysis and Prevention,2011,11(1):10-16.
[4] 刘峰,程崎男. 船用曲轴锻钢件的超声波检测[J]. 重工与起重技术,2015(2):27-29.
[5] 李文全,刘金生. 三拐曲轴超声波检测工艺的改进[J]. 有色矿冶,2012,28(3):94-95.
[6] 靳世久,杨晓霞. 超声相控阵检测技术的发展及应用[J].电子测量与仪器学报,2014,28(9):925-934.
[7] SHAN B H, WANG H, ZHAO X Y, et al. The ultrasonic phased array inspection technology used in tubular joint welds of offshore platform structures[R]. 17th World Conference on Nondestructive Testing,2008:25-28.
[8] 潘亮,董世运,徐滨士,等. 相控阵超声检测技术研究与应用概况[J]. 无损检测,2013,35(5):26-29.
[9] JEONG K N. Nondestructive inspection of resistance spot welds using matrix phased array ultrasonic technology[J]. Advanced Materials and Processes,2014,172(3):22-24.
[10] 董世运,刘彬,徐滨士,等. 旧曲轴缺陷超声相控阵检测仿真设计与验证[J]. 无损检测,2011,33(增刊):1-3.
[11] 陈昌华,汤志贵,陈能进,等. 列车车轮缺陷的超声波相控阵分析[J]. 物理测试,2012,30(1):34-39.
[12] 徐娜,周正干,刘卫平,等. L型构件R区的超声相控阵检测方法[J]. 航空学报,2013,34(2):419-425.
[13] GUAN X F, ZHANG J D, ZHOU S, et al. Post-processing of phased-array ultrasonic inspection data with parallel computing for nondestructive evaluation[J]. Journal of Nondestructive Evaluation,2014,33(3):342-351.
[14] HOPKINS D, NEAU G, BER L L. Advanced phased-array technologies for ultrasonic inspection of complex composite parts[J]. Cinde Journal,2012,33(2):273-277.
[15] 黄刚,杨陆. Visual Basic程序设计实用教程[M]. 南京:南京大学出版社,2014:167-179.
[16] 龙华明,张平,于达,等. 曲面相控阵楔块对检测造成的误差探究[J]. 华北电力技术,2015(7):17-21.
