TY - CONF A1 - Hu, Wei-Hua A1 - Caetano, E. A1 - Cunha, A. A1 - Rücker, Werner ED - Carrera, E. ED - Miglioretti, F. ED - Petrolo, M. T1 - Comparison of different statistical approaches for removal of environmental/operational effects on modal properties and damage detection N2 - The implementation of a continuous dynamic monitoring System in Pedro e Ines footbridge at Coimbra, Portugal, operating since June 2007, enabled to detect different environmental/operational effects on the modal properties, based on appropriate processing of monitoring data collected by a set of accelerometers and thermal sensors. In order to remove or mitigate such environmental/operational effects with the purpose of damage detection, two different Statistical methods have been adopted, One of them consists in the multiple linear regression (MLR) by performing correlation analysis between measured modal properties and environmental/operational variables. Another is based on the identification of the linear subspace within the modal properties by applying principal component regression (PCR) without using measured values of environmental and operational variables. This paper presents a comparison ofthe performance of these two alternative approaches on the basis of continuous monitoring data acquired front the instrumented Pedro e Ines footbridge. T2 - SMART2013 - 6th ECCOMAS conference on smart structures and materials CY - Turin, Italy DA - 24.06.2013 KW - Structural health monitoring KW - Environmental/operational effects KW - Principal component regression KW - Multiple linear regression KW - Damage detection PY - 2013 SP - 1 EP - 13 AN - OPUS4-32972 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -