The investigation on structural health monitoring of aerospace structures via piezoelectric aeroelastic energy harvestin
- PDF / 1,440,398 Bytes
- 9 Pages / 595.276 x 790.866 pts Page_size
- 18 Downloads / 154 Views
(0123456789().,-volV) (0123456789().,-volV)
TECHNICAL PAPER
The investigation on structural health monitoring of aerospace structures via piezoelectric aeroelastic energy harvesting Hassan Elahi1 Received: 4 August 2020 / Accepted: 24 August 2020 Ó Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract From the past few decades, the aerospace industry is using composite materials having low weight to strength ratio, and the aerospace vehicles are subjected to adverse and harsh conditions, during the operational time. Furthermore, they require a continuous power supply to operate the wireless sensors. So, in the aerospace industry, energy harvesting and structural health monitoring (SHM) are the critical tasks. Piezoelectric (PZT) materials can play a vital role in the field of energy harvesting and structural health monitoring of the structures at the same time, which makes them more convenient to use in aerospace applications. In this research paper, the fluid-structure interaction (FSI) based system is analyzed, the PZT harvester is subjected to the axial airflow for energy harvesting. The campaign is carried out to predict the energy harvesting capability of the aeroelastic harvester via PZT transduction. The parameters influencing the energy harvesting mechanism i.e., airflow and external resistance are analyzed. The numerical bifurcation diagram is also constructed to understand the plunge amplitude of the harvester at the different values of airflow. Moreover, the SHM of the host structure (aeroelastic harvester) is also analyzed via the admittance method at the same time. The results showed that the magnitude of energy harvesting and quality of SHM for the harvester attached with the rectangular PZT patch is better than with the circular PZT patch. Abbreviations A Flag Tip Amplitude Cp Piezoelectric Inherent Capacitance d Piezoelectric Patch Width D Flexural Rigidity Dj Electrical displacement PZT constant dkij Piezoelectric Constant in 31 Coupling Direction e31 Ek Electrical Field EK Kinetic energy EE Elastic energy EP Potential energy fc Critical Frequency FC Reduced Critical Frequency FSI Fluid-Structure Interaction D Discrete parameters for damaged state Gi Discrete parameters for healthy state GH i
& Hassan Elahi [email protected] 1
Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, Rome, Italy
H h I kME l L LCOs PAEH PEH PZT Q R RMSD sij sEijkl Tkl TL UC URC U1 V Y Z
Width of a rectangular plate (harvester) and PZT patch Thickness of a rectangular plate (harvester) Current Electro-mechanical Coupling Factor Length of the piezoelectric patch Length of the rectangular plate Limit cycle oscillations Piezoelectric aeroelastic energy harvesting Piezoelectric energy harvesting Piezoelectric Electrical Charge External resistance Root Mean Square Damage Mechanical stress Compliance of the material Mechanical strain Local tension for plates inextensibility Critical Flow Velocity Reduced Critical Velocity Airflow velocity Electric Potential Electromechanic
Data Loading...
