2024-03-29T02:04:16Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00007138
2022-12-13T02:20:33Z
1:86
A Numerical Study of Structural Damage Dectection 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
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
S., Beskhyroun
T., Oshima
S., Mikami
T., Yamazaki
open access
vibration characteristics
damage detection
modalproperties
health monitoring
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.
社団法人 土木学会
2005-03
eng
journal article
VoR
https://kitami-it.repo.nii.ac.jp/records/7138
構造工学論文集A
51A
965
976
https://kitami-it.repo.nii.ac.jp/record/7138/files/8669692-6.pdf
application/pdf
1.2 MB
2016-11-22