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J.V. Araújo dos Santos¹, H. Lopes², and P. Moreno-García³

¹LAETA, IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Portugal
²DEM, ISEP, Instituto Politécnico do Porto, Portugal
³Escuela Superior de Ingeniería, Universidad de Cádiz, Spain

doi:10.4203/ccp.106.121

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, "Application of an Optimal Spatial Sampling Technique to Damage Localisation", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 121, 2014. doi:10.4203/ccp.106.121

Keywords: damage localisation, finite differences, beam, optimal spatial sampling, mode shape curvature, modal rotation field..

Summary

A method aimed at improving the localisation of damage in beams based on the use of finite differences is presented in this paper. This improvement is achieved by differentiating modal rotation fields instead of modal displacement fields and by a technique which allows the computation of an optimal spatial sampling to decrease the propagation and amplification of noise and errors. It is shown that by using the optimal spatial sampling the influence of the errors is diminished and relatively little damage can be localised. The results also show that the damage intensity is proportional to the modified curvature damage factor proposed in this paper.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 106 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: Paper 121 Application of an Optimal Spatial Sampling Technique to Damage Localisation J.V. Araújo dos Santos¹, H. Lopes², and P. Moreno-García³ ¹LAETA, IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Portugal ²DEM, ISEP, Instituto Politécnico do Porto, Portugal ³Escuela Superior de Ingeniería, Universidad de Cádiz, Spain doi:10.4203/ccp.106.121 purchase the full-text of this paper Full Bibliographic Reference for this paper , "Application of an Optimal Spatial Sampling Technique to Damage Localisation", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 121, 2014. doi:10.4203/ccp.106.121 Keywords: damage localisation, finite differences, beam, optimal spatial sampling, mode shape curvature, modal rotation field.. Summary A method aimed at improving the localisation of damage in beams based on the use of finite differences is presented in this paper. This improvement is achieved by differentiating modal rotation fields instead of modal displacement fields and by a technique which allows the computation of an optimal spatial sampling to decrease the propagation and amplification of noise and errors. It is shown that by using the optimal spatial sampling the influence of the errors is diminished and relatively little damage can be localised. The results also show that the damage intensity is proportional to the modified curvature damage factor proposed in this paper. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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