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Journals / Politeknik Dergisi / 2019 / Cilt: 22 - Sayı: 3

Investigation of the Behavior of Piezoelectric Sensors Used in Structural Health Monitoring at Different Temperatures

Yapısal Sağlık İzlemede Kullanılan Piezoelektrik Sensörlerin Değişen Sıcaklıklarda Davranışının İncelenmesi

Mesut TEKKALMAZ
Gökhan HAYDARLAR
MEHMET ALPER SOFUOĞLU
Pages
597–606
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results obtained from experimental and simulation studies were found to be close to each other.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Structural health monitoring (SHM); is the tracking method used to determine the location and size of the damage to the structure and the life of the structure.
📊
Key Findings & Data:In the experimental study; impedance measurements were performed between -10 °C and -45 °C after impedance measurements of the piezoelectric sensor were completed at room temperature.
💡
Conclusion & Impact:The results obtained from experimental and simulation studies were found to be close to each other.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Piezoelektrik sensör · elektromekanik empedans · sıcaklık etkisi

Abstract

Structural health monitoring (SHM); is the tracking method used to determine the location and size of the damage to the structure and the life of the structure. In this study, the behavior of a free piezoelectric sensor was experimentally tested using the electromechanical impedance method (EMI), taking into account the structures exposed to varying environmental conditions, and simulation studies were performed using the ANSYS finite element program. In the experimental study; impedance measurements were performed between -10 °C and -45 °C after impedance measurements of the piezoelectric sensor were completed at room temperature. The frequency and amplitude have increased with decreasing temperature. In the simulation studies, harmonic analysis results were obtained by using the ANSYS finite element program of the piezoelectric sensor used in the experimental study. The frequency and amplitude increased as the temperature decreased, as in the results obtained from the experimental studies. The results obtained from experimental and simulation studies were found to be close to each other.

Özet

Yapısal sağlık izleme (SHM), yapıdaki hasarın yeri ve boyutunu, yapının ömrünü tespit etmek için kullanılan izleme yöntemidir. Bu çalışmada, serbest bir piezoelektrik sensörün davranışı değişen çevre koşullarına maruz kalmış yapılar göz önüne alınarak elektromekanik empedans metodu (EMI) kullanılarak deneysel olarak test edilmiştir ve ANSYS sonlu elemanlar programı kullanılarak simülasyon çalışmaları gerçekleştirilmiştir. Deneysel çalışmada; oda sıcaklığında piezoelektrik sensörün empedans ölçümleri tamamlandıktan sonra, -10 °C ve -45 °C arasındaki empedans ölçümleri gerçekleştirilmiştir. Sıcaklık düştükçe frekans ve genlik artmıştır. Simülasyon çalışmalarında ise, deneysel çalışmada kullanılan piezoelektrik sensörün ANSYS sonlu elemanlar programı yardımıyla harmonik analiz sonuçları elde edilmiştir. Deneysel çalışmalardan elde edilen sonuçlarda olduğu gibi, sıcaklık düştükçe frekans ve genlik artmıştır. Deneysel çalışmalardan ve simülasyon çalışmalarından elde edilen sonuçların birbirine yakın olduğu görülmüştür.

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Cite This Article

TEKKALMAZ, M., HAYDARLAR, G., SOFUOĞLU, M. A. (2019). Investigation of the Behavior of Piezoelectric Sensors Used in Structural Health Monitoring at Different Temperatures. Politeknik Dergisi, Cilt: 22 - Sayı: 3, 597–606. https://ajindex.com/articles/307060

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