On The Automation of Ultrasonic Testing System for Surface Crack Detecting
碩士 === 國立成功大學 === 造船及船舶機械工程學系碩博士班 === 91 === This thesis report the development of Ultrasonic Automatic System for detecting surface crack .This system can not only detects the location but also the shape of the surface crack automatically；hence , it can decrease training time and the error induced...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2003
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| Online Access: | http://ndltd.ncl.edu.tw/handle/04738733402596335502 |
| Summary: | 碩士 === 國立成功大學 === 造船及船舶機械工程學系碩博士班 === 91 === This thesis report the development of Ultrasonic Automatic System for detecting surface crack .This system can not only detects the location but also the shape of the surface crack automatically；hence , it can decrease training time and the error induced from human-effect factor. By using this system the location and shape of surface crack can be.
This system use Visual Basic language to combine ultrasonic flaw detector with XY scanning table. The developed program has three main functions. One is acoustic wave data transmission. Another is automatic scanning procedure. The last computes acoustic wave data and obtains measurement result.
Experimental result show that the ultrasonic automatic system can execute automatic work and has more better measurement result form A-Scan obtains wave data. However, some effort is needed to improve its performance.
This thesis provides a new method to measure the opening loading of fatigue crack That using ultrasonic testing detects echo of crack tip is similar result to general method for use strain gage.
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