Paper Title:
Prediction of Creep Crack Growth Life Using Backward Radiated Ultrasound
  Abstract

A nondestructive inspection is required to check for defects inside of the actually used components and structures and to confirm their generation and growth rate. Using the backward radiated ultrasonic inspection system, we performed nondestructive inspection of cracks and micro cavities resulting from creep. From the ultrasound test results, the generation and growth of cracks and micro-cavities were confirmed, and the fracture life of the components and structures could be predicted. We confirmed degraded region by crack size and cavity based on the amplitude of the backward radiated ultrasound. The size of degraded region at 600oC was about 10mm, while that at 650oC was about 15mm. The size of crack and the cavity area fraction confirmed by ultrasound were very close to the actual size and cavity area fraction, indicating the validity of the predicted creep crack growth rate and creep.

  Info
Periodical
Key Engineering Materials (Volumes 306-308)
Edited by
Ichsan Setya Putra and Djoko Suharto
Pages
1025-1030
DOI
10.4028/www.scientific.net/KEM.306-308.1025
Citation
B. S. Lim, C.S. Jeong, S. Y. Bae, S. J. Song, Y. H. Kim, "Prediction of Creep Crack Growth Life Using Backward Radiated Ultrasound", Key Engineering Materials, Vols. 306-308, pp. 1025-1030, 2006
Online since
March 2006
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Price
$32.00
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