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JP2008070325A Method and apparatus for ultrasonic flaw detection, and steel product 有权
标题翻译：超声波检测方法与装置及钢铁产品
公开(公告)号：JP2008070325A
公开(公告)日：2008-03-27
申请号：JP2006251344
申请日：2006-09-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： UEDA YOSHIHISA , KAWAKAMI TETSUO , HAMAMOTO TOSHIMITSU , MATSUO MASAHIKO , YADOGUCHI TETSUYA
IPC分类号： G01N29/04 , G01N29/06 , G01N29/44
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic flaw detecting method and its apparatus, capable of stably and reliably detecting subsurface flaws in the vicinity of surfaces, even when there are disturbances of the position of the object material of flaw detection and that disturbances, such as transfer plays and variations in the echo intensity, and to provide steel products which are the results thereof. SOLUTION: A probe 1 is made to relatively move along a surface of an object material P of flaw detection at each prescribed movement pitch D to transmit ultrasonic waves W substantially perpendicular to the object material P of flaw detection from the probe 1, receive reflected waves E, and acquire flaw detection signals. Reference positions H are set, on the basis of bottom echoes G in the acquired flaw detection signals; and flaw detection signals for each movement pitch D are adjusted and combined, in such a way that the reference positions H matches to generate two-dimensional image data. Flaws in a region in front of the reference positions H in the two-dimensional image data are extracted. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种能够稳定可靠地检测表面附近的地下瑕疵的超声波探伤方法及其装置，即使存在瑕疵检测对象物的位置的干扰，并且，扰动，例如转移剧烈和回波强度的变化，并提供作为其结果的钢产品。解决方案：使探头1沿着每个规定的移动间距D沿着探伤物体P的表面相对移动，以从探针1发射基本上垂直于探伤物体P的物体P的超声波W，接收反射波E，并获取探伤信号。基于所获取的探伤信号中的底部回波G来设定基准位置H; 并且以使得参考位置H匹配以产生二维图像数据的方式来调整和组合每个移动间距D的探伤信号。提取二维图像数据中的参考位置H前方的区域中的缺陷。版权所有（C）2008，JPO＆INPIT

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