Improving electromechanical impedance damage detection under varying temperature
The field of structural health monitoring has seen a fundamental shift in recent years, as researchers strive to replace conventional non-destructive evaluation techniques with smart material-based techniques. Perhaps the most promising of smart material techniques for developing structural health m...
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my.iium.irep.975332022-04-07T01:33:21Z http://irep.iium.edu.my/97533/ Improving electromechanical impedance damage detection under varying temperature Djemana, Mohamed Hrairi, Meftah Mohd Yatim, Norfazrina Hayati T Technology (General) TJ Mechanical engineering and machinery The field of structural health monitoring has seen a fundamental shift in recent years, as researchers strive to replace conventional non-destructive evaluation techniques with smart material-based techniques. Perhaps the most promising of smart material techniques for developing structural health monitoring (SHM) systems is electromechanical impedance (EMI) which can be used for real-time structural damage assessment. In EMI, mechanical resonances of structure can be seen in electrical characteristics of piezoelectric transducers due to electromechanical coupling of transducer with the structure. Existence of damage will cause a structural stiffness change and therefore the resonant characteristics of the structure will be altered. This article presents an experimental and numerical study to investigate the effects of notch damage with temperature on the electrical impedance of the piezoelectric sensor used in the EMI technique. The practical implementation of the compact EMI method utilizes as its main apparatus an impedance analyser (Model Agilent 4294A) that reads the insitu EMI of piezoelectric wafer active sensors (PWAS) attached to the monitored structure. The finite element modelling used ANSYS software three-dimensional (3D) capability to simulate an aluminium beam at varying temperatures. Real-time monitoring of the structure is achieved based on harmonic measurements. The results conclusively showed that the proposed temperature compensation technique eliminates the results ambiguity and enabled the EMI system to detect small damages that were otherwise indiscernible. Semarak Ilmu Publishing 2022 Article PeerReviewed application/pdf en http://irep.iium.edu.my/97533/8/97533_Improving%20electromechanical%20impedance%20damage_SCOPUS.pdf application/pdf en http://irep.iium.edu.my/97533/9/97533_Improving%20electromechanical%20impedance%20damage.pdf Djemana, Mohamed and Hrairi, Meftah and Mohd Yatim, Norfazrina Hayati (2022) Improving electromechanical impedance damage detection under varying temperature. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 92 (1). pp. 123-133. ISSN 2289-7879 https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/346/194 10.37934/arfmts.92.1.123133 |
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T Technology (General) TJ Mechanical engineering and machinery Djemana, Mohamed Hrairi, Meftah Mohd Yatim, Norfazrina Hayati Improving electromechanical impedance damage detection under varying temperature |
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The field of structural health monitoring has seen a fundamental shift in recent years, as researchers strive to replace conventional non-destructive evaluation techniques with smart material-based techniques. Perhaps the most promising of smart material techniques for developing structural health monitoring (SHM) systems is electromechanical impedance (EMI) which can be used for real-time structural damage assessment. In EMI, mechanical resonances of structure can be seen in electrical characteristics of piezoelectric transducers due to electromechanical coupling of transducer with the structure. Existence of damage will cause a structural stiffness change and therefore the resonant characteristics of the structure will be altered. This article presents an experimental and numerical study to investigate the effects of notch damage with temperature on the electrical impedance of the piezoelectric sensor used in the EMI technique. The practical implementation of the compact EMI method utilizes as its main apparatus an impedance analyser (Model Agilent 4294A) that reads the insitu EMI of piezoelectric wafer active sensors (PWAS) attached to the monitored structure. The finite element modelling used ANSYS software three-dimensional (3D) capability to simulate an aluminium beam at varying temperatures. Real-time monitoring of the structure is achieved based on harmonic measurements. The results conclusively showed that the proposed temperature compensation technique eliminates the results ambiguity and enabled the EMI system to detect small damages that were otherwise indiscernible. |
format |
Article |
author |
Djemana, Mohamed Hrairi, Meftah Mohd Yatim, Norfazrina Hayati |
author_facet |
Djemana, Mohamed Hrairi, Meftah Mohd Yatim, Norfazrina Hayati |
author_sort |
Djemana, Mohamed |
title |
Improving electromechanical impedance damage detection under varying temperature |
title_short |
Improving electromechanical impedance damage detection under varying temperature |
title_full |
Improving electromechanical impedance damage detection under varying temperature |
title_fullStr |
Improving electromechanical impedance damage detection under varying temperature |
title_full_unstemmed |
Improving electromechanical impedance damage detection under varying temperature |
title_sort |
improving electromechanical impedance damage detection under varying temperature |
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Semarak Ilmu Publishing |
publishDate |
2022 |
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http://irep.iium.edu.my/97533/8/97533_Improving%20electromechanical%20impedance%20damage_SCOPUS.pdf http://irep.iium.edu.my/97533/9/97533_Improving%20electromechanical%20impedance%20damage.pdf http://irep.iium.edu.my/97533/ https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/346/194 |
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