Evaluation Techniques for Austenitic Stainless Steels through Tensile Deformation by Analyzing Ultrasonic Pulse Waves in the Frequency Domain

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概要

• 論文の詳細を見る

• This paper describes a technique for evaluating the structural variations that tensile deformation induces in austenitic stainless steels. By using fast Fourier transform processing to analyze the spectral distributions of ultrasonic pulse waveforms, I quantitatively investigate the relationship between the spectral distributions of pulse echoes and the internal structures of SUS304 and SUS310 stainless steel. The spectral distributions are obtained by the zero-crossing method and the relationship between the spectral distributions and ultrasonic attenuation caused by grain scattering are discussed. With increasing elongation, the spectral peak frequency and Q value increase for SUS304 steel and are nearly constant for SUS310 steel. The results for SUS304 steel are attributed to martensite transformation, which results in smaller grain size and a corresponding reduction of the attenuation coefficient due to the ultrasonic scatterings.

• 社団法人応用物理学会の論文
• 1994-03-15

著者

• Honjoh Katsuhiko

  Interdisciplinary Research Laboratories Ntt

関連論文

• Evaluation Techniques for Austenitic Stainless Steels through Tensile Deformation by Analyzing Ultrasonic Pulse Waves in the Frequency Domain

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