منابع مشابه
Curved arrays for improved horizontal sizing in small pipe welds
In the past, most small diameter pipe welds were radiographed for defects. However, radiography has significant limitations: safety and licensing issues, disruption to work schedules, chemical wastes, and poor detection of planar defects. Manual ultrasonics was permitted by some codes, but suffers from lack of recorded data and dependence on the operator’s skills. Automated ultrasonic testing (...
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This paper describes computer modeling and testing of phased arrays curved in the passive axis to improve focusing on small diameter pipe welds; in practice, a couple of curvatures satisfy most diameter and wall thickness applications. The modeling was followed by experimental testing using one of the curved arrays. Not surprisingly, the curved array showed significant improvements over a flat ...
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ژورنال
عنوان ژورنال: The Lancet
سال: 1871
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(01)43950-x