Nondestructive damage detection in Euler-Bernoulli beams using nodal curvatures-Part II: Field measurements

作者：Dincal Selcuk; Stubbs Norris^*

来源：Structural Control & Health Monitoring, 2014, 21(3): 331-341.

DOI：10.1002/stc.1564

• nondestructive damage detection
• I-40 bridge study
• nodal curvatures
• modal flexibility
• damage localization
• severity estimation

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.

• 出版日期2014-3