TY  - CHAP
A1  - Deeb, Maher
A1  - Zabel, Volkmar
ED  - Gürlebeck, Klaus
ED  - Lahmer, Tom
ED  - Werner, Frank
T1  - THE APPLICATION OF POD CURVES TO DAMAGE DETECTION BASED ON PARTIAL MODELS– A NUMERICAL AND EXPERIMENTAL STUDY
T2  - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar
N2  - Non-destructive techniques for damage detection became the focus of engineering interests in the last few years.  However, applying these techniques to large complex structures like  civil  engineering  buildings  still  has  some  limitations  since  these  types  of  structures  are
unique and the methodologies often need a large number of specimens for reliable results. For this reason, cost and time can greatly influence the final results.
Model Assisted Probability Of Detection (MAPOD) has taken its place among the ranks of damage identification techniques, especially with advances in computer capacity and modeling tools. Nevertheless, the essential condition for a successful MAPOD is having a reliable model in advance.  This condition is opening the door for model assessment and model quality problems. In this work, an approach is proposed that uses Partial Models (PM) to compute the Probability Of damage Detection (POD). A simply supported beam, that can be structurally modified and
tested under laboratory conditions, is taken as an example.  The study includes both experimental and numerical investigations, the application of vibration-based damage detection approaches and a comparison of the results obtained based on tests and simulations.
Eventually,  a  proposal  for  a  methodology  to  assess  the  reliability  and  the  robustness  of  the models is given.
KW  - Angewandte Informatik
KW  - Angewandte Mathematik
KW  - Computerunterstütztes Verfahren
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170306-27615
UR  - http://euklid.bauing.uni-weimar.de/ikm2012
SN  - 1611-4086
ER  - 
TY  - CHAP
A1  - Ahmad, Sofyan
A1  - Zabel, Volkmar
A1  - Könke, Carsten
T1  - WAVELET-BASED INDICATORS FOR RESPONSE SURFACE MODELS IN DAMAGE IDENTIFICATION OF STRUCTURES
T2  - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar
N2  - In this paper, wavelet energy damage indicator is used in response surface methodology to identify the damage in simulated filler beam railway bridge.  The approximate model is addressed to include the operational and surrounding condition in the assessment. The procedure  is  split  into  two  stages,  the  training  and  detecting  phase.   During  training  phase,  a so-called response surface is built from training data using polynomial regression and radial basis function approximation approaches. The response surface is used to detect the damage in structure during detection phase.  The results show that the response surface model is able to detect moderate damage in one of bridge supports while the temperatures and train velocities are varied.
KW  - Angewandte Mathematik
KW  - Computerunterstütztes Verfahren
KW  - Angewandte Informatik
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170306-27588
SN  - 1611-4086
ER  -