学術雑誌論文

学術雑誌論文

text

Journal of Applied Physics. 1997, 81(8), p. 3677-3684

Noncontact measurement of ultrasonic attenuation during rotating fatigue test of steel

American Institute of Physics

英語

text

1997-04-15

https://doi.org/10.1063/1.365489

Ogi H., Hirao M., Minoura K. "Noncontact measurement of ultrasonic attenuation during rotating fatigue test of steel", Journal of Applied Physics, 81(8), 3677-3684 (1997) https://doi.org/10.1063/1.365489.

Acoustic resonance technique has been applied to monitor the fatigue damage process of steel pipes exposed to rotating bending fatigue. The technique incorporates a superheterodyne spectrometer and an electromagnetic acoustic transducer (EMAT). The EMAT was newly developed for this purpose, and uses the magnetostrictive mechanism of ferromagnetic metals and excites and detects axial shear waves traveling around the sample pipe with axial polarization. Noncontact ultrasonic spectroscopy permits the accurate determination of the resonant frequency and the attenuation coefficient throughout the fatigue life. The attenuation coefficient shows a sharp peak around 80-90% of the life. The evolution is interpreted as reflecting dislocation multiplication, depinning, and formation of cell structures, which is supported by transmission electron microscopy observations. © 1997 American Institute of Physics.

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Journal of Applied Physics, 81(8), 3677-3684 (1997) and may be found at https://doi.org/10.1063/1.365489.

84230

Noncontact measurement of ultrasonic attenuation during rotating fatigue test of steel

American Institute of Physics

英語

1997-04-15

Journal of Applied Physics

81

8

3677

3684

https://doi.org/10.1063/1.365489

https://hdl.handle.net/11094/84230