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Nondestructive damage detection in Euler–Bernoulli beams using nodal curvatures—Part II: Field measurements
Author(s) -
Dincal Selcuk,
Stubbs Norris
Publication year - 2014
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.1564
Subject(s) - nondestructive testing , modal , structural engineering , bridge (graph theory) , bernoulli's principle , engineering , computer science , materials science , physics , aerospace engineering , medicine , polymer chemistry , quantum mechanics
SUMMARY The objective of this paper is to evaluate, using field measurements, the performance of the nondestructive evaluation methodology presented in the accompanying paper ‘Nondestructive damage detection in Euler–Bernoulli beams using nodal curvatures – Part I: Theory and numerical verification’. Experimental modal data collected from the Interstate 40 bridge are utilized to accomplish the stated objective. Prior to the replacement of the bridge in 1993, researchers from New Mexico State University and Los Alamos National Laboratory introduced incremental levels of damage on the structure and performed experimental modal analyses at each damage stage. The results of the experiments were utilized to evaluate the performance of five previously published nondestructive damage identification methods. Utilizing the measured modal parameters from the Interstate 40 bridge study, structural damage is localized and quantified with the nondestructive evaluation methodology presented in the accompanying paper. The results of this study indicate that the proposed methodology performed equally as well as the damage index method for damage localization and additionally provided realistic estimates of damage severity. Copyright © 2013 John Wiley & Sons, Ltd.