2024-03-29T05:22:04Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00006851
2022-12-13T02:20:10Z
1:86
パワースペクトル密度曲線の変化を用いた構造欠陥検出の数値解析
A numerical analysis of structural damage detection using changes in the curvature of power spectral density
パワースペクトル密度曲線の変化を用いた構造欠陥検出の数値解析
ベスキロウン, シェリフ
大島, 俊之
三上, 修一
山崎, 智之
A change of modal characteristics can indicate structural damage. Based on changes in Power Spectral Density (PSD), this paper proposes a damage identification technique that detects damage and its location. The method is applied to a finite element model of a three span steel bridge with a concrete deck. Several damage scenarios were introduced to a main girder of the bridge. The method determined the exact damage location. In addition, the results illustrate that changes in the PSD curvature can be a useful tool for continuous monitoring of structural integrity using ambient vibration data. Furthermore, changes in the PSD curvature do not require a very fine grid of measurements to detect and locate damage effectively.
application/pdf
journal article
社団法人 土木学会
2005-03
application/pdf
構造工学論文集A
51A
965
976
https://kitami-it.repo.nii.ac.jp/record/6851/files/4707.pdf
eng
社団法人 土木学会, S. BESKHYROUN, T. OSHIMA, S. MIKAMI, T. YAMAZAKI, Journal of Structural EngineeringII, 51A, 2005, 965-976.
open access