高速フーリエ変換法を用いたセレーションの評価 Evaluation of serration using the fast Fourier transform method

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Fast Fourier Transform (FFT) method was applied in order to evaluate a repeated load drop (serration) observed in the load-time curves in the tensile test. 5083 aluminum alloy plates were tested in tension at temperatures between 203 K and 333 K using an Instron type tensile test machine. Changes in repeated load drops with the deformation temperature were characterized by a conventional method (mean amplitude ΔL<sub>m</sub> and number <i>N</i> of load drops) and FFT method (maximum amplitude <i>C<sub>max</sub></i> and peak frequency <i>f<sub>p</sub></i> derived from the Fourier spectrum). <i>C<sub>max</sub></i> and <i>f<sub>p</sub></i> were compared with ΔL<sub>m</sub> and <i>N</i>, respectively. The comparison showed the reasonable agreement between <i>f<sub>p</sub></i> and <i>N</i>, as well as that of <i>C<sub>max</sub></i> and ΔL<sub>m</sub>. In evaluation of the serration using FFT method, there was no artificial reading error and reliable analysis could be carried out in a short time. Therefore it suggests that FFT method is suitable for the investigation of the serration.

収録刊行物

  • 軽金属

    軽金属 54(2), 51-56, 2004-02-28

    The Japan Institute of Light Metals

参考文献:  17件中 1-17件 を表示

被引用文献:  4件中 1-4件 を表示

各種コード

  • NII論文ID(NAID)
    10012098761
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    6865227
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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