コンクリート亀裂面形状の周波数領域におけるフーリエ1次元分析 : 振幅成分と位相成分の検証

概要

論文の詳細を見る
In this study, we show a method of quantifying the shapes of concrete crack surfaces using one-dimensional Fourier transform, and try to analyze an actual crack surface formed by tensile stresses in order to verify the method. The proposed method represents the shape properties of concrete crack surfaces, revolved into "amplitude constituent" and "phase constituent" by Fourier transform, as "amplitude spectrum", "phase spectrum" "probability density of phase angle", "probability density of phase difference" in the frequency domain. The result shows following characteristics that the shape property of the specimen have; 1. Amplitude spectrum generally indicates that intensity F_k is high in low-frequency areas and low in high-frequency areas. 2. Both the phase spectrum and probability density of phase angle indicate random distribution. 3. Probability density of phase difference seems to indicate a general tendency that has a resemblance to normal distribution. And it seems that this fact shows a possibility of establishing a standard shape model for concrete crack surfaces.
一般社団法人日本建築学会の論文
2003-03-20