@techreport{oai:jaxa.repo.nii.ac.jp:00044945,
 author = {薄, 一平 and SUSUKI, Ippei},
 month = {Nov},
 note = {不規則な荷重を受ける構造物や部材の疲労寿命を不規則度指数を用いて推定するために本報では,白色雑音の線形フィルタ出力波として得られるようなガウス性定常ランダム過程について不規則度指数の解析を行った。用いたフィルタは矩形,台形,バタワース型の帯域通過フィルタである。その結果,帯域幅の増加とともに指数も単調に増加するがフィルタの減衰特性に応じた一定値に漸近する,フィルタ形状が一致すれば指数もほぼ等しくなる,入力白色雑音に帯域制限が存在しても通常その影響は無視できる等の特性が明らかになった。, This paper presents the results of an analysis of the irregularity factors of stationary and Gaussian random processes which are generated by filtering the output of a pure or a band-limited white noise. The following types of filters are examined in this study: 1.An ideal band pass filter 2.A trapezoidal filter 3.A butterworth type band pass filter. It was found that the values of the irregularity factors were approximately equal among these filters if only the end-slopes were the same rates. As the band width of filters increases, irregularity factors increase monotonically and approach the respective constant values depending on the end-slopes. This implies that the noise characteristics relevant to the fatigue damage such as statistical aspects of the height of the rise and fall or the distribution of the peak values is not changed for a broad band random time history. It was also found that the effect of band limitation of input white noise on irregularity factors is negligibly small., 資料番号: NALTR0688000, レポート番号: NAL TR-688},
 title = {不規則度指数による疲労損傷評価　第1報,狭帯域および広帯域ランダム波の不規則度指数},
 year = {1981}
}