Performance of non-destructive evaluation by diffracted SH ultrasonic waves in predicting degree of fatigue in cyclic bending of ferritic steel

Mikio Fukuhara, Yoshiyuki Kuwano, Kiyoshi Saito, Taiji Hirasawa, Ichiro Komura

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The degree of fatigue in ferritic wrought steel during cyclic bending was determined by anaylsis of diffracted SH ultrasonic waves with the aid of multiple regression analysis. As the degree of fatigue increases, accompanied by residual stress, the incident waves curve to the interior region with positive stress field owing to the acoustoelastic effect. As a result, the propagation time of the launched waves lengthens, leading to a modulation of the received waveform. Multiple regression analysis for the waveform modulation produces a reliable estimation, with correlation coefficient of 0.948, for the degree of fatigue.

Original languageEnglish
Pages (from-to)211-216
Number of pages6
JournalNDT and E International
Volume31
Issue number3
DOIs
Publication statusPublished - 1998 Jun

Keywords

  • Fatigue prediction
  • Ferritic steel
  • SH ultrasonic waves

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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