Windmill-type ultrasonic micromotor fabricated by thermoplastic green machining process

Yoon, Chang‐Bun; Lee, Sung-Mi; Kim, Hyoun‐Ee; Lee, Kyung-Woo

doi:10.1016/j.sna.2006.05.040

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…Generally, a PZT ceramic compound is used as a piezoelectric material to fabricate an AE sensor on account of its excellent electromechanical properties [26]. The specimens examined were fabricated according to the formula: Pb (Zr 0.54 Ti 0.46 )O 3 + 0.2 wt.% Cr 2 O 3 + x wt.% Nb 2 O 5 , where x = 0.0 to 2.0.…”

Section: Methodsmentioning

confidence: 99%

Fabrication of a high performance acoustic emission (AE) sensor to monitor and diagnose disturbances in HTS tapes and magnet systems

Kim¹,

Song²,

Jeong

et al. 2010

Met. Mater. Int.

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An acoustic emission (AE) technique was introduced as a non-destructive method to monitor sudden deformation caused by local heat concentrations and micro-cracks within superconductors and superconducting magnets. However, the detection of AE signals in a high temperature superconductor (HTS) tape is not easy because of its low signal to noise ratio caused by the noise from boiling liquid cryogen or mechanical vibration from the cryo-cooler. Therefore, high performance piezoelectric ceramics are needed to improve the sensitivity of the AE sensor. The aim of this study was to improve the piezoelectric and dielectric properties to enhance the performance of an AE sensor. This study examined the effects of Nb2O5 addition (0.0 wt.% to 2.0 wt.%) on the properties of high performance piezoelectric ceramics, Pb(Zr0.54 Ti0.46)O3 + 0.2 wt.% Cr2O3, sintered at 1200 ºC for 2 h. The performance was examined with respect to the acoustic emission response of AE sensors manufactured using the specimens with various Nb2O5 contents. Superior sensor performance was obtained for the AE sensors fabricated with the specimens containing 1.0 wt.% to 1.5 wt.% Nb2O5. The performance and characteristics of the AE sensors were in accordance with their piezoelectric and dielectric properties.

show abstract

Section: Methodsmentioning

confidence: 99%

Fabrication of a high performance acoustic emission (AE) sensor to monitor and diagnose disturbances in HTS tapes and magnet systems

Kim¹,

Song²,

Jeong

et al. 2010

Met. Mater. Int.

View full text Add to dashboard Cite

show abstract

“…But the non-axisymmetric mode of the annular stator is not easy to excite. Reference [10] developed a new type of ultrasonic motor, and its characteristic was that the middle part of the round stator was shaped into windmill holes and the rotor was installed in the special-shaped hole of the stator. The deformation of the special-shaped hole under nonaxisymmetric mode was used to rotate the rotor.…”

Section: Introductionmentioning

confidence: 99%

Mechanism analysis and output characteristics experiments of an ultrasonic motor with circumferential surface drive

Hui

Jiang

et al. 2012

J Electroceram

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A kind of ultrasonic motor, whose rotor is driven by stator's inner circumferential surface, has been designed and fabricated. The paper has analyzed the stator deformation characteristics under bending mode by using finite element method, identified the motor's working mechanism with two-phase voltage drive, and studied the different functions of tangential and radial displacements of the stator's inner circumference small teeth under bending mode and pointed that the above mentioned displacements along two directions of small teeth could drive the rotor continuously with single-phase voltage. The paper has discussed the motor's rotary direction reversing and put forward a concrete scheme of reversing with single-phase voltage drive. The mode of the stator was obtained by experiment. Under two-phase and single-phase voltages, running experiments of the motor have been accomplished and the corresponding characteristics curves have been drawn. Taken above analysis result as driving mechanism, a kind of thin-type standing ultrasonic motor can be developed further.

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Fabrication of piezoelectric thick-film stator using electrohydrodynamic jet printing for micro rotary ultrasonic motors

Zhao

Wang

et al. 2020

Ceramics International

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Windmill-type ultrasonic micromotor fabricated by thermoplastic green machining process

Cited by 5 publications

References 14 publications

Fabrication of a high performance acoustic emission (AE) sensor to monitor and diagnose disturbances in HTS tapes and magnet systems

Fabrication of a high performance acoustic emission (AE) sensor to monitor and diagnose disturbances in HTS tapes and magnet systems

Mechanism analysis and output characteristics experiments of an ultrasonic motor with circumferential surface drive

Fabrication of piezoelectric thick-film stator using electrohydrodynamic jet printing for micro rotary ultrasonic motors

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