Flaw Sizing Detection by Pulse-Echo Ultrasonic Technique

Abstract:

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Ultrasonic is one of the most common uses of non-destructive evaluation technique. It could detect flaws inside the structure and on the surface such as voids, holes and cracks. In this investigation, a 304 steel block with a small hole inside the structure was fabricated. The radius of the hole was evaluated by the pulse-echo ultrasonic technique. In this work, 2.25MHz, 5MHz and 10MHz of incident waves were employed to detect the radius of the hole inside the structure. The errors of a hole with 2.5 mm radius measured by 5 MHz and 10MHz longitudinal wave were 1.15% and 6.6%, respectively. Experimental results showed that the accuracy of flaw sizing detection by ultrasonic technique depends on the frequency of the incident wave.

Info:

Periodical:

Edited by:

Qi Luo

Pages:

758-761

DOI:

10.4028/www.scientific.net/AMM.55-57.758

Citation:

S. C. Her and M. C. Chang, "Flaw Sizing Detection by Pulse-Echo Ultrasonic Technique", Applied Mechanics and Materials, Vols. 55-57, pp. 758-761, 2011

Online since:

May 2011

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Price:

$35.00

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