Thermomechanical effects on electrical energy harvested from laminated piezoelectric devices
บทความในวารสาร
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Thonapalin, Pornrawee; Aimmanee, Sontipee; Laoratanakul, Pitak; Das, Raj;
ผู้เผยแพร่: MDPI
ปีที่เผยแพร่ (ค.ศ.): 2021
ชื่อย่อของวารสาร: Crystals
Volume number: 11
Issue number: 2
นอก: 2073-4352
eISSN: 2073-4352
ภาษา: English-Great Britain (EN-GB)
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บทคัดย่อ
Piezoelectric materials are used to harvest ambient mechanical energy from the environment and supply electrical energy via their electromechanical coupling property. Amongst many intensive activities of energy harvesting research, little attention has been paid to study the effect of the environmental factors on the performance of energy harvesting from laminated piezoelectric materials, especially when the temperature in the operating condition is different from the room temperature. In this work, thermomechanical effects on the electrical energy harvested from a type of laminated piezoelectric devices, known as thin layer unimorph ferroelectric driver (called THUNDER) were investigated. Three configurations of THUNDER devices were tested in a controlled temperature range of 30–80◦C. The THUNDER devices were pushed by using a cam mechanism in order to generate required displacements and frequencies. The experimental results exhibited a detrimental effect of the elevated temperature on the generated voltage and the harvested electrical power. It is due to changes in residual stress and geometry. These results are advantageous for many applications of the THUNDER devices and for future design of a new laminated piezoelectric sensor and energy harvester in an elevated temperature environment. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
คำสำคัญ
Piezoelectric material, Thermomechanical effect, THUNDER devices
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