Development of elastic damage load theorem for damage detection in a statically determinate beam

A system identification technique based on the static displacement changes due to damages is proposed to enhance the efficiency of damage detection in flexural structures. For this, an elastic damage load theorem was derived and verified. Comparisons with numerical and experimental tests were perfor...

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Published inComputers & structures Vol. 82; no. 29; pp. 2483 - 2492
Main Authors Choi, Il-Yoon, Lee, Jun S., Choi, Eunsoo, Cho, Hyo-Nam
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.2004
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Abstract A system identification technique based on the static displacement changes due to damages is proposed to enhance the efficiency of damage detection in flexural structures. For this, an elastic damage load theorem was derived and verified. Comparisons with numerical and experimental tests were performed to investigate the applicability and advantage of the proposed theorem. In addition, it is shown that the sparse measurement can be overcome by increasing the loading conditions instead of increasing the number of measurement sensors. From numerical and experimental application of the elastic damage load theorem to damage identification, it can be concluded that the elastic damage load theorem may be useful in the long term health monitoring and the damage assessment using periodical static loading test.
AbstractList A system identification technique based on the static displacement changes due to damages is proposed to enhance the efficiency of damage detection in flexural structures. For this, an elastic damage load theorem was derived and verified. Comparisons with numerical and experimental tests were performed to investigate the applicability and advantage of the proposed theorem. In addition, it is shown that the sparse measurement can be overcome by increasing the loading conditions instead of increasing the number of measurement sensors. From numerical and experimental application of the elastic damage load theorem to damage identification, it can be concluded that the elastic damage load theorem may be useful in the long term health monitoring and the damage assessment using periodical static loading test.
A system identification technique based on the static displacement changes due to damages is proposed to enhance the efficiency of damage detection in flexural structures. For this, an elastic damage load theorem was derived and verified. Comparisons with numerical and experimental tests were performed to investigate the applicability and advantage of the proposed theorem. In addition, it is shown that the sparse measurement can be overcome by increasing the loading conditions instead of increasing the number of measurement sensors. From numerical and experimental application of the elastic damage load theorem to damage identification, it can be concluded that the elastic damage load theorem may be useful in the long term health monitoring and the damage assessment using periodical static loading test.
Author Cho, Hyo-Nam
Choi, Il-Yoon
Lee, Jun S.
Choi, Eunsoo
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Issue 29
Keywords Elastic damage load theorem
System identification
Damage detection
Conjugate beam
Static displacement
Language English
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SubjectTerms Conjugate beam
Damage detection
Elastic damage load theorem
Static displacement
System identification
Title Development of elastic damage load theorem for damage detection in a statically determinate beam
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