Paper Title:
Sizing Detection of a Surface-Breaking Crack by Ultrasonic Technique
  Abstract

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 surface-breaking crack was fabricated. A series of test specimen with different depths of surface-breaking crack ranging from 2mm to 9mm was fabricated. The depth of the surface crack was evaluated by the pulse-echo ultrasonic technique. In this work, 2.25MHz, 5MHz and 10MHz of incident waves were employed to detect the depth of the surface-breaking crack. The effect of incident angle on the measuring accuracy was investigated. Experimental results showed that the accuracy of crack sizing detection by ultrasonic technique is not only dependent on the frequency of the incident wave but also dependent on the incident angle.

  Info
Periodical
Edited by
Zhou Mark
Pages
865-868
DOI
10.4028/www.scientific.net/AMM.52-54.865
Citation
S. C. Her, S. T. Lin, "Sizing Detection of a Surface-Breaking Crack by Ultrasonic Technique", Applied Mechanics and Materials, Vols. 52-54, pp. 865-868, 2011
Online since
March 2011
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