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浙江大学学报(工学版)
J4  2013, Vol. 47 Issue (1): 116-121    DOI: 10.3785/j.issn.1008-973X.2013.01.017
机械与能源工程     
变厚度曲面构件超声检测灵敏度补偿
张杨1,2, 周晓军1, 杨辰龙1, 李雄兵2, 郑慧峰3
1. 浙江大学 机械工程学系,浙江 杭州 310027；2. 中南大学 CAD/CAM研究所,湖南 长沙 410075；
3. 中国计量学院 计量测试工程学院,浙江 杭州 310018
Sensitivity compensation method in ultrasonic inspection for
curved components with variable thickness
ZHANG Yang1,2, ZHOU Xiao-jun1, YANG Chen-long1, LI Xiong-bing2, ZHENG Hui-feng3
1. Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China;2. CAD/CAM Institute,
Central South University, Changsha 410075, China;3. College of Metrological Technology and Engineering,
China Jiliang University, Hangzhou 310018, China
 全文: PDF 
摘要：

为了解决变厚度曲面构件超声检测灵敏度补偿问题,提出声场计算与试验测量相结合的补偿方法.描述了单个高斯声束在介质中传播及穿透曲界面时的声场变化,根据自动探伤时探头位置、工件厚度和形状,利用多元高斯声束叠加方法,推导出水浸穿透法超声检测系统接收声场模型.在实际应用中,考虑介质吸收、散射引起的衰减,衰减系数通过试块插入取代法测量出.采用修正后的接收声场模型可以预测不同检测参数下的接收声压,准确计算出各点接收声压的衰减,进行灵敏度补偿.试验结果验证了该方法的正确性和实用性．
关键词： 曲面构件;  变厚度;  多元高斯声束;  灵敏度    
Abstract:

A new compensation method was proposed in order to solve the compensation problem in ultrasonic inspection for curved components with variable thickness. The method combined sound field calculation and experimental measurement technique. The Gaussian beam was introduced in order to calculate the receiving transducer ultrasonic field. The analytical expressions for the amplitude and phase of a Gaussian beam were described after propagation through media and interactions with curved interfaces. According to the conditions such as component thickness, shape and probe location, the receiving sound model of throughtransmission ultrasonic inspection system was deduced based on multi-Gaussian beam superposition method. In practice, additional attenuation caused by medium absorption and scattering should be considered. After the attenuation coefficient  was measured by the method named inserted and substituted technique, the receiving sound model was modified. Then the receiving sound pressure was predicted with different parameters based on the modified model, and attenuation of the receiving sound pressure was calculated for sensitivity compensation. Experimental results showed the correctness and effectiveness of the new method．
Key words:  curved component    variable thickness    multi-Gaussian beam superposition    sensitivity
出版日期: 2013-03-05
:  TB 553  
基金资助:

 国家自然科学基金资助项目（51075358,51005252）; 浙江省自然科学基金资助项目（Y1090189, LQ12E05018）;高等学校博士点基金资助项目（201001011200155）
通讯作者: 周晓军，男，教授.     E-mail: cmeesky@163.com
作者简介: 张杨(1985-)，男，博士生，从事超声自动化检测的研究.E-mail: ash-1985@163.com
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引用本文:

张杨 周晓军, 杨辰龙, 李雄兵, 郑慧峰. 变厚度曲面构件超声检测灵敏度补偿[J]. J4, 2013, 47(1): 116-121.

ZHANG Yang, ZHOU Xiao-jun, YANG Chen-long, LI Xiong-bing, ZHENG Hui-feng. Sensitivity compensation method in ultrasonic inspection for
curved components with variable thickness. J4, 2013, 47(1): 116-121.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2013.01.017    或    http://www.zjujournals.com/xueshu/eng/CN/Y2013/V47/I1/116

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