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Influence of Adhesive Bonding and Debonding Detection on Aluminum Beam Using Electro-Mechanical Impedance (EMI) Technique
Structural health monitoring (SHM) is a promising field for detecting and diagnosing the damage of any type of structure. The electromechanical Impedance (EMI) technique is one such local type of health monitoring that can detect incipient damages in the host structure. There are some challenges in the piezo-structure interaction; one is related to the bonding and debonding of the adhesive layer between the host structure and Lead Zirconium Titanate (PZT). Due to the degradation of the adhesive layer as time passes or by any means, the quality of the signatures is affected. In this paper, a study of perfect bonds with an adhesive layer is conducted. Two cases of debonding conditions were considered to observe the difference in the signatures of conductance and susceptance. A statistical analysis was also conducted using the RMSD indices to check the effect of debonding. Comparing all the debonding and bonding cases it can be observed that there is a significant variation in the EMI signature of debonding instances concerning the perfect bond and the bond by considering the adhesive layer. Moreover, the increasing trend of RMSD values, indicates the debonding cases and the bond with an adhesive layer effectively. The results obtained from the admittance signatures and statistical indices accurately detect the debonding damages. Lastly, debonding in which half-length is debonded along the length of PZT shows the highly deviated signatures compared to the de-bonding in the one third middle length of PZT, due to shear stress transfer phenomenon from PZT to structure. In future, the study can be used to improve the sensing and actuating abilities of the PZT patch for monitoring critical civil engineering infrastructure systems.
Influence of Adhesive Bonding and Debonding Detection on Aluminum Beam Using Electro-Mechanical Impedance (EMI) Technique
Structural health monitoring (SHM) is a promising field for detecting and diagnosing the damage of any type of structure. The electromechanical Impedance (EMI) technique is one such local type of health monitoring that can detect incipient damages in the host structure. There are some challenges in the piezo-structure interaction; one is related to the bonding and debonding of the adhesive layer between the host structure and Lead Zirconium Titanate (PZT). Due to the degradation of the adhesive layer as time passes or by any means, the quality of the signatures is affected. In this paper, a study of perfect bonds with an adhesive layer is conducted. Two cases of debonding conditions were considered to observe the difference in the signatures of conductance and susceptance. A statistical analysis was also conducted using the RMSD indices to check the effect of debonding. Comparing all the debonding and bonding cases it can be observed that there is a significant variation in the EMI signature of debonding instances concerning the perfect bond and the bond by considering the adhesive layer. Moreover, the increasing trend of RMSD values, indicates the debonding cases and the bond with an adhesive layer effectively. The results obtained from the admittance signatures and statistical indices accurately detect the debonding damages. Lastly, debonding in which half-length is debonded along the length of PZT shows the highly deviated signatures compared to the de-bonding in the one third middle length of PZT, due to shear stress transfer phenomenon from PZT to structure. In future, the study can be used to improve the sensing and actuating abilities of the PZT patch for monitoring critical civil engineering infrastructure systems.
Influence of Adhesive Bonding and Debonding Detection on Aluminum Beam Using Electro-Mechanical Impedance (EMI) Technique
Lecture Notes in Civil Engineering
Abdullah, Waleed (editor) / Chaudhary, Muhammad Tariq (editor) / Kamal, Hasan (editor) / Parol, Jafarali (editor) / Almutairi, Abdullah (editor) / Patel, Ajay (author) / Parida, Lukesh (author) / Moharana, Sumedha (author)
International Workshop on Civil Structural Health Monitoring ; 2024 ; Kuwait City, Kuwait
2024-07-01
11 pages
Article/Chapter (Book)
Electronic Resource
English
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