Validation of Ultrasonic Velocity Measurements for Detecting Void Swelling in First-Wall Structural Materials

Time-of-flight ultrasonic measurements were conducted on a thick hexagonal block of 304 stainless steel irradiated to ∽33 dpa in EBR-II, and the results of ultrasonic-implied void swelling and carbide-induced densification were compared with those obtained by immersion density measurements and TEM o...

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Bibliographic Details
Published inFusion science and technology Vol. 66; no. 1; pp. 77 - 82
Main Authors Okita, T., Etoh, J., Sagisaka, M., Matsunaga, T., Isobe, Y., Freyer, P. D., Huang, Y., Wiezorek, J. M. K., Garner, F. A.
Format Journal Article
LanguageEnglish
Published Taylor & Francis 01.08.2014
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Summary:Time-of-flight ultrasonic measurements were conducted on a thick hexagonal block of 304 stainless steel irradiated to ∽33 dpa in EBR-II, and the results of ultrasonic-implied void swelling and carbide-induced densification were compared with those obtained by immersion density measurements and TEM observation. The three types of measurement were found to agree rather well with each other. This study confirmed that ultrasonic velocity measurement is a powerful non-destructive technique to measure the through-thickness-average volumetric changes induced by neutrons in thick structural materials.
ISSN:1536-1055
1943-7641
DOI:10.13182/FST13-755