ADVANCEMENT OF ULTRASONIC TECHNIQUES USING RERADIATED SOUND ENERGIES FOR NONDESTRUCTIVE EVALUATION OF WELDMENTS.
Quarterly progress rept. no. 3, 1 Jan-31 Mar 66,
AUTOMATION INDUSTRIES INC BOULDER COLO RESEARCH DIV
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Some of the energy radiations which were not included in mode conversion were measured and analyzed. The combined information from the previous work efforts was used in preliminary investigation of weld samples containing actual defects. The Delta was used in various configurations, each exploiting a distinct characteristic of the Delta operation. Combinations of these Delta characteristics provided Delta scan recordings showing excellent correlation with radiographs of the respective weld samples. The Delta Technique is a method of ultrasonic weld inspection using a two search unit configuration. The transmitted energy is angled into the weld region from a search unit positioned to one side of the weld. Flaw information is received with the other search unit positioned directly over the weld. In the Delta Technique, flaw information is not dependent on a preferred defect orientation however, the receiver search unit must be directly over the defect. The work performed to date is encouraging, because all test results support the Delta concept as an ultrasonic weld inspection technique that is unrestricted by defect orientation and is capable of inspecting welds at the rate of several feet per hour. Author
- Manufacturing and Industrial Engineering and Control of Production Systems
- Test Facilities, Equipment and Methods