The design and analysis for low-frequency piezoelectric cymbal transducers

Goh, Pin Hong; Li, Ming Jun; Tsou, Nien‐Ti

doi:10.1016/j.ceramint.2017.05.207

Cited by 11 publications

(7 citation statements)

References 17 publications

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“…The numerical and experimental analyses have confirmed increase of harvesting efficiency over 400% by DPEHC compared with individual F‐C PEHC under identical operating conditions. While most of the researches on cymbal PTs were on symmetric geometry, an interesting study on asymmetric geometry was reported by Goh et al who highlighted the potential applicability of PEHs made of asymmetric cymbal geometry in pavements.…”

Section: Technologies Of Energy Harvesting From Pavements and Roadwaysmentioning

confidence: 99%

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

2019

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Summary Energy harvesting from pavements has been a topic of extensive research in the recent past. This domain has attracted not only the research community but also the industry and governmental authorities. The various sources exploited for energy harvesting from pavements and roadways are solar radiation, mechanical energy dissipated due to moving vehicles and pedestrians, geothermal energy, rainwater, and wind. This article presents an exhaustive and updated review of all potential means of energy harvesting from these sources. Following the introductory section, the article sequentially covers the energy harvesting methods and their research progress, materials, development of practical systems, commercial status, comparison of technologies, challenges, and concluding remarks. This study reveals that there is wide scope for further research and feasibility studies, which could lead to a wide‐spread implementation of the various technologies for energy harvesting from pavements and roads.

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Section: Technologies Of Energy Harvesting From Pavements and Roadwaysmentioning

confidence: 99%

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

2019

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“…The study indicated that the output power of a cymbal can reach 1.20 mW with a load of 0.7 MPa and 20 Hz [18]. To improve the energy generation efficiency and increase the durability of the transducers, researchers have successively proposed and optimized various transducers, such as a layered bridge [19], low-frequency cymbal [20], stacked [21], and both-ends-fixed beam [22] transducers. In addition, Wang used laboratory experiments to optimize the process of stacked piezoelectric units and evaluated their application performance in terms of electromechanical conversion performance and structural strength [23,24].…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment and Comparison of Two Piezoelectric Energy Harvesters Developed for Pavement Application: Case Study

Liu

Zhao

et al. 2022

Sustainability

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To advance the development of piezoelectric energy harvesters, this study designed and manufactured bridge-unit-based and pile-unit-based piezoelectric devices. An indoor material testing system and accelerated pavement test equipment were used to test the electrical performance, mechanical performance, and electromechanical coupling performance of the devices. The results showed that the elastic modulus of the pile structure device was relatively higher than that of the bridge structure device. However, the elastic modulus of the two devices should be improved to avoid attenuation in the service performance and fatigue life caused by the stiffness difference. Furthermore, the electromechanical conversion coefficients of the two devices were smaller than 10% and insensitive to the load magnitude and load frequency. Moreover, the two devices can harvest 3.4 mW and 2.6 mW under the wheel load simulated by the one-third scale model mobile load simulator, thus meeting the supply requirements of low-power sensors. The elastic modulus, electromechanical conversion coefficients, and electric performance of the pile structure device were more reliable than those of the bridge structure device, indicating a better application prospect in road engineering.

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“…Bejarano et al designed an ultrasonic orthopaedic surgical device featuring a class V flextensional cymbal transducer, which made the device can be optimised to deliver an accurate and precise cutting capability [18]. Goh et al evaluated the applicability of three types of asymmetric cymbal transducers for low frequency by using the finite element method, which had been the design guidelines of the cymbal transducers [19] Then, DMDA was designed by Centre National D'études Spatiales, and several normally centred mechanisms based on the diamond-structure amplified piezoactuators were created at Cedrat Technologies [20]. Belly et al used a diamond-structure amplified piezo actuator for an inertial stepper motor to build the stepping piezo actuators, which showed the characteristic of high speed, high force, and low consumption [21].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation and experiment of a diamond‐type micro‐displacement amplifier driven by piezoelectric actuator

Zheng

Zhai

et al. 2020

J. eng.

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The micro-displacement amplifier has been widely used to magnify the outputs of piezoelectric actuators for some large displacement required applications, and the amplification and frequency are the most important elements for designing the amplifying mechanisms. This study presents the design of a diamond-type micro-displacement amplifier (DMDA) and simulates its working performances by using the finite element method. After the theoretical values of amplification and natural frequency are calculated, the effects of system parameters such as angle, arm and body thicknesses, corner radius, side and edge widths, on the changes of amplification and stability are studied. Then experiments are carried out to verify the theoretical simulations and further study the amplification mechanism. Finally, a micro-droplet jetting dispenser featuring the DMDA is constructed. The perfect jetting performance shows the good application of DMDA in microelectronics packaging field. This study finds that with the increase of the angle and the arm thickness, the amplification decreases and the natural frequency increases obviously. A larger value of corner radius or side width produces a smaller natural frequency. Besides, the increase of edge width enlarges the amplification and reduces the natural frequency. This study can be used to guide the design of this kind of microdisplacement amplifier.

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The design and analysis for low-frequency piezoelectric cymbal transducers

Cited by 11 publications

References 17 publications

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

Performance Assessment and Comparison of Two Piezoelectric Energy Harvesters Developed for Pavement Application: Case Study

Simulation and experiment of a diamond‐type micro‐displacement amplifier driven by piezoelectric actuator

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