The Application of SAFT Imaging Technique in the Rod Ultrasonic Imaging Inspecting
摘 要
以变形钛合金棒材为检测对象,将超声合成孔径聚焦技术(SAFT)算法进行适当的改进,使其适合棒材检测。对棒材试块进行SAFT成像和B扫描成像,通过比较,发现SAFT成像能够增强缺陷信号,提高检测灵敏度。
Abstract
The advanced SAFT imaging technique is used for inspecting wrought titanium alloy rod with ultrasonic, and the SAFT technique is improved to make it suitable for the rod inspection. Both SAFT images and Bscan images of the testing rod are rebuilt. Comparing the SAFT imaging and Bscan technique, it shows that the SAFT imaging technique can enhance the flaw signal and increase the inspecting sensibility.
中图分类号 TG115.28
所属栏目 科研成果与学术交流
基金项目 航空基金资助项目(BA200700186);江西省教育厅重点实验室基金资助项目(CB2006608010)
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备注危荃(1984-),女,硕士研究生,研究方向为超声检测。
引用该论文: WEI Quan,WU GuanHua,ZHONG DeHuang,WU Wei. The Application of SAFT Imaging Technique in the Rod Ultrasonic Imaging Inspecting[J]. Nondestructive Testing, 2008, 30(7): 415~417
危荃,邬冠华,钟德煌,吴伟. SAFT成像技术在棒材超声成像检测中的应用[J]. 无损检测, 2008, 30(7): 415~417
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参考文献
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【2】张凡.三维合成孔径聚焦成像的研究[D].硕士论文,中国科学院声学研究所,1998.
【3】Schmitz V, Chakhlov S, Muller W. Experiences with synthetic aperture focusing technique in the field[J]. Ultrasonics,2000,38(8):731-738.
【4】杨辰龙,周晓军,吴瑞明.棒材缺陷超声自动检测系统的研制[J].机床与液压,2005,(9):112-113,184.
【5】沈建中.无损检测的几个热点问题和技术[J].无损检测,2005,27(1):24-26,46.
【6】沈建中.超声成象技术及其在无损检测中的应用[J].无损检测,1994,16(7):202-206.
【7】Moholkar V S, Huitema M, Rkveld S. Characterization of an ultrasonic system using wavelet transforms[J]. Chemical Engineering Science,2002,57(4):617.
【8】胡智,刘伟成,等.小直径棒材超声检测方法研究[J].南昌航空工业学院学报,2001,15(3):16-18.
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【10】王邓志,罗斌,等.合成孔径聚焦超声成像系统研究[J].东北电力技术,2002,23(12):42-45.
【11】Boonsang, S Zainal, J Dewhurst, R J. Synthetic aperture focusing techniques in time and frequency domains for photoacoustic imaging[J]. Insight: NonDestructive Testing and Condition Monitoring,2004,46(4):196-199.
【12】Schickert, Martin, Krause, et al. Ultrasonic imaging of concrete elements using reconstruction by synthetic aperture focusing technique[J]. Journal of Materials in Civil Engineering,2003,15(3):235-246.
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