An Evaluation of a Methodology for Detection, Localization, and Quantification of Changes in Nonlinear Systems Based on Experimental Measurements

作者：Hernandez Garcia Miguel R^*; Masri Sami F; Ghanem Roger; Figueiredo Eloi; Farrar Charles R

来源：Ingegneria Sismica, 2014, 31(3-4): 72-86.

• Structural Health Monitoring
• reduced-order models
• structural changes
• restoring forces

Experimental data from a test-bed structure tested is used to evaluate and validate a methodology for detecting, localizing, and quantifying structural changes in nonlinear structures using chain-like reduced-order models estimated from measurements. This study showed that variations in the mathematical representation (i.e., two-dimensional polynomial expansion) of the restoring forces in the estimated chain-like reduced-order models could be employed to confidently detect the presence of physical structural changes introduced into the test-bed structure, accurately locate the structural section where the changes occurred, and provide an estimate of the severity or magnitude of the structural changes.

• 出版日期2014-12