Combined model-free data-interpretation methodologies for damage detection during continuous monitoring of structures
نویسندگان
چکیده
2 3 Despite the recent advances in sensor technologies and data acquisition systems, interpreting 4 measurement data for structural monitoring remains as challenge. Furthermore, due to the 5 complexity of the structures, materials used and uncertain environments, behavioral models are 6 difficult to build accurately. This paper presents novel model-free data-interpretation methodologies 7 that combine MPCA with each of four regression-analysis methods – Robust Regression Analysis 8 (RRA), Multiple Linear Analysis (MLR), Support Vector Regression (SVR) and Random Forest (RF) – for 9 damage detection during continuous monitoring of structures. The principal goal is to exploit the 10 advantages of both MPCA and regression-analysis methods. The applicability of these combined 11 methods is evaluated and compared with individual applications of MPCA, RRA, MLR, SVR and RF 12 through four case studies. Result showed that the combined methods outperformed non-combined 13 methods in terms of damage detectability and time to detection. 14 Combined model-free data-interpretation methodologies for damage detection during continuous monitoring of structures Irwanda Laory, Thanh N. Trinh, Daniele Posenato, Ian F. C. Smith 1 Graduate Student, Applied Computing and Mechanics Laboratory, Swiss Federal Institute of Technology Lausanne (EPFL), Station 18,CH-1015 Lausanne, Switzerland (corresponding author). E-mail: [email protected] 2 Postdoctoral Researcher, Applied Computing and Mechanics Laboratory, Swiss Federal Institute of Technology Lausanne (EPFL), Station 18,CH-1015 Lausanne, Switzerland. E-mail: [email protected] 3 Project Engineer, SMARTEC SA, CH-6928 Manno, Switzerland. E-mail: [email protected] 4 Professor, Applied Computing and Mechanics Laboratory, Swiss Federal Institute of Technology Lausanne (EPFL), Station 18,CH-1015 Lausanne, Switzerland. E-mail: [email protected] Laory, I., Trinh, T.N., Posenato, D. and Smith, I.F.C. "Combined Model-Free Data-Interpretation Methodologies for Damage Detection during Continuous Monitoring of Structures" J of Computing in Civil Engineering, Vol. 27, No. 6, 2013, pp 657-666. http://cedb.asce.org Copyright ASCE
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