Identification of damage in structural systems using modal data

Pothisiri, T.; Hjelmstad, K. D.; University of Illinois at Urbana-Champaign. Dept. of Civil Engineering

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Identification of damage in structural systems using modal data

2001-04-01
By Pothisiri, T. ; Hjelmstad, K. D.

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Creators:

Pothisiri, T. ; Hjelmstad, K. D.

Pothisiri, T. ; Hjelmstad, K. D. Less -
Corporate Creators:

University of Illinois at Urbana-Champaign. Dept. of Civil Engineering
Subject/TRT Terms:

[+]

Algorithms Bridge Trusses Civil Engineering Damage Assessment Dynamic Structural Analysis Finite Element Method Modal Response Noise Nondestructive Tests Probability Theory Scenarios Stiffness Trusses Vibration
Publication/ Report Number:

UILU-ENG-2001-2002
Resource Type:

Research Paper
Edition:

A report on research
Corporate Publisher:

University of Illinois at Urbana-Champaign
Abstract:

To develop a useful global damage identification scheme, noise and spareseness of the measured modal data must be taken into account. Measurement noise if inevitable. If one does not consider noise and its random nature, the damage evaluation algorithm may not provide accurate results. In addition to noise, spatial sparseness of measured modal response presents a main problem in developing a robust damage detection scheme. Most civil engineering structures require a large number of degrees of freedom in a finite element model due to their size and complexity, however, only a limited number of physical locations can be practically measures.
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PDF
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US Transportation Collection
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urn:sha256:8dbf2caf8e6267d32794587dcd9a8e4647cfb4ad406860696884ae6c306c3e35
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https://rosap.ntl.bts.gov/view/dot/5169/dot_5169_DS1.pdf
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Identification of damage in structural systems using modal data

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