Structural Damage Detection Using Energy Flow Models
The presence of a crack in a structure modifies the energy dissipation pattern. As a consequence, damaged structures can present high localized damping. Experimental tests have revealed that crack nucleation and growth increase structural damping which makes this phenomenon useful as a damage locato...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2008-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2008/176954 |
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| _version_ | 1832550977435074560 |
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| author | E.R.O. Santos V.S. Pereira J.R.F. Arruda J.M.C. Dos Santos |
| author_facet | E.R.O. Santos V.S. Pereira J.R.F. Arruda J.M.C. Dos Santos |
| author_sort | E.R.O. Santos |
| collection | DOAJ |
| description | The presence of a crack in a structure modifies the energy dissipation pattern. As a consequence, damaged structures can present high localized damping. Experimental tests have revealed that crack nucleation and growth increase structural damping which makes this phenomenon useful as a damage locator. This paper examines the energy flow patterns caused by localized damping in rods, beams and plates using the Energy Finite Element Method (EFEM), the Spectral Element Method (SEM) and the Energy Spectral Element Method (ESEM) in order to detect and locate damage. The analyses are performed at high frequencies, where any localized structural change has a strong influence in the structural response. Simulated results for damage detection in rods, beams, and their couplings calculated by each method and using the element loss factor variation to model the damage, are presented and compared. Results for a simple thin plate calculated with EFEM are also discussed. |
| format | Article |
| id | doaj-art-66930da6785544baaf586418e7ee32ff |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2008-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-66930da6785544baaf586418e7ee32ff2025-02-03T06:05:20ZengWileyShock and Vibration1070-96221875-92032008-01-01153-421723010.1155/2008/176954Structural Damage Detection Using Energy Flow ModelsE.R.O. Santos0V.S. Pereira1J.R.F. Arruda2J.M.C. Dos Santos3Computational Mechanics Department, Faculty of Mechanical Engineer, State University of Campinas, UNICAMP, P.O. Box 6122, Zip 13083-970, Campinas, SP, BrazilComputational Mechanics Department, Faculty of Mechanical Engineer, State University of Campinas, UNICAMP, P.O. Box 6122, Zip 13083-970, Campinas, SP, BrazilComputational Mechanics Department, Faculty of Mechanical Engineer, State University of Campinas, UNICAMP, P.O. Box 6122, Zip 13083-970, Campinas, SP, BrazilComputational Mechanics Department, Faculty of Mechanical Engineer, State University of Campinas, UNICAMP, P.O. Box 6122, Zip 13083-970, Campinas, SP, BrazilThe presence of a crack in a structure modifies the energy dissipation pattern. As a consequence, damaged structures can present high localized damping. Experimental tests have revealed that crack nucleation and growth increase structural damping which makes this phenomenon useful as a damage locator. This paper examines the energy flow patterns caused by localized damping in rods, beams and plates using the Energy Finite Element Method (EFEM), the Spectral Element Method (SEM) and the Energy Spectral Element Method (ESEM) in order to detect and locate damage. The analyses are performed at high frequencies, where any localized structural change has a strong influence in the structural response. Simulated results for damage detection in rods, beams, and their couplings calculated by each method and using the element loss factor variation to model the damage, are presented and compared. Results for a simple thin plate calculated with EFEM are also discussed.http://dx.doi.org/10.1155/2008/176954 |
| spellingShingle | E.R.O. Santos V.S. Pereira J.R.F. Arruda J.M.C. Dos Santos Structural Damage Detection Using Energy Flow Models Shock and Vibration |
| title | Structural Damage Detection Using Energy Flow Models |
| title_full | Structural Damage Detection Using Energy Flow Models |
| title_fullStr | Structural Damage Detection Using Energy Flow Models |
| title_full_unstemmed | Structural Damage Detection Using Energy Flow Models |
| title_short | Structural Damage Detection Using Energy Flow Models |
| title_sort | structural damage detection using energy flow models |
| url | http://dx.doi.org/10.1155/2008/176954 |
| work_keys_str_mv | AT erosantos structuraldamagedetectionusingenergyflowmodels AT vspereira structuraldamagedetectionusingenergyflowmodels AT jrfarruda structuraldamagedetectionusingenergyflowmodels AT jmcdossantos structuraldamagedetectionusingenergyflowmodels |