Inverse analysis of distribution of internal small defects

Naoya Tada, Ryuichi Ohtani, Takayuki Kitamura, Masaya Yamada

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


This paper deals with a method for predicting the three-dimensional distribution of internal defects from the two-dimensional observation of intercepted defects on an inspection plane, by inverse analysis. First, the fundamental relationships between the three-dimensional distribution and the two-dimensional observation of internal defects were analytically derived on the basis of a statistical model where multiple penny-shaped cracks in an infinite body were intercepted by an inspection plane. The validity of the method was confirmed by a numerical simulation. It was, moreover, applied to small creep-fatigue cracks distributed in a smooth specimen of Type 304 stainless steel, and the volumetric density and the distribution of crack size were successfully evaluated.

Original languageEnglish
Pages (from-to)450-455
Number of pages6
JournalJSME International Journal, Series A: Mechanics and Material Engineering
Issue number4
Publication statusPublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)


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