发明名称 |
METHOD AND APPARATUS FOR AUTOMATIC ULTRASONIC FLAW DETECTION |
摘要 |
<p>METHOD AND APPARATUS FOR AUTOMATIC ULTRASONIC FLAW DETECTION Method and apparatus for automatic ultrasonic flaw detection of pipe welding zones wherein the width of the weld zone is divided into a plurality of subdivisions. The ultrasonic energy received from each of the subdivisions is displayed by employing multichannel gate circuitry providing respective outputs in units of 10% of the height of the echoes in each subdivision on a cathode ray tube in synchronization with signals representative of the longitudinal and lateral position of the probes along the pipe with respect to a reference point. The height of the defective echoes in each gate are printed together with the positions of the probe. The positions of the defects are diagrammed by a computer, thereby enabling high-speed data processing of the flaw detection information, a decrease in the time for precise flaw detection comparable to conventional manual flaw detection method and apparatus and easy determination of the flaw detection results.</p> |
申请公布号 |
CA1108743(A) |
申请公布日期 |
1981.09.08 |
申请号 |
CA19770282693 |
申请日期 |
1977.07.14 |
申请人 |
SUMITOMO METAL INDUSTRIES LIMITED |
发明人 |
SHIRAIWA, TOSHIO;YAMAGUCHI, HISAO;MATSUMOTO, SHIGEAKI;TOMABECHI, MASATOSHI;NAKAJIMA, KIMIO |
分类号 |
G01N29/04;G01N29/06;G01N29/11;G01N29/265;G01N29/30;G01N29/38;(IPC1-7):01N29/04 |
主分类号 |
G01N29/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|