发明名称 |
ULTRASONIC FLAW DETECTING METHOD AND ULTRASONIC FLAW DETECTOR |
摘要 |
In order to make it possible in ultrasonic flaw detection to generate ultrasonic waves containing a main beam only by use of an array probe and clearly identify a defect in a specimen by use of images, an element pitch P (the distance between centers of adjacent ultrasonic transducer elements in the array probe) is set longer than 1/4 of the wavelength of longitudinal waves generated by the ultrasonic transducer elements and shorter than 1/2 of the wavelength and reception signals up to time corresponding to the sum of wall thickness round-trip propagation time for longitudinal waves and wall thickness round-trip propagation time for shear waves in the specimen are displayed.
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申请公布号 |
CA2496370(A1) |
申请公布日期 |
2005.08.23 |
申请号 |
CA20052496370 |
申请日期 |
2005.02.07 |
申请人 |
HITACHI, LTD. |
发明人 |
KOIKE, MASAHIRO;MIKI, MASAHIRO;KONO, NAOYUKI;MUSHA, YOSHINORI;TOOMA, MASAHIRO;MATSUI, TETSUYA |
分类号 |
G01N29/04;G01N29/07;G01N29/26;(IPC1-7):G01N29/04 |
主分类号 |
G01N29/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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