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 language | English |
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Pages (from-to) | 211-216 |
Number of pages | 6 |
Journal | NDT and E International |
Volume | 31 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1998 Jun |
Keywords
- Fatigue prediction
- Ferritic steel
- SH ultrasonic waves
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering