نتایج جستجو برای Piezoelectric beam

تعداد نتایج: 67489  

2012
Takahiko Yanagitani,

1.1 Shear mode bulk acoustic wave devices and sensors Acoustic microsensor technique, well known as QCM (Quartz crystal microbalance) or TSM (Thickness shear mode) sensor, is an effective method to detect small mass loading on the sensor surface. This sensor can be operated even in liquid by using shear mode resonance. Therefore, shear mode piezoelectric film resonators are attractive for liqui...

2014
Roderic Lakes,

Lattice structures are presented with a piezoelectric sensitivity, d, much larger in magnitude than that of material comprising the lattice ribs. Large sensitivity is achieved by using piezoelectric bimorph elements as ribs; these bend in response to electric input, giving rise to a much larger displacement than for axial elements. Complex electrical connectivity is helpful but not necessary; s...

2010
D. Farrar, M. S. Yu, J. E. West, W. Moon,

258 is one where the piezoactivity and mechanical properties can be altered individually so that the mechanical stiffness of the material can be controlled for particular applications or tuned to match that of the surroundings (e.g., air or water) for increased transduction sensitivity. Here, we present a new piezoelectric material based on a helical biopolymer with an inherently large electric...

1997
Chih-yi Lin, Fred C. Lee, Milan M. Jovanovic, Dan Y. Chen, Dusan Borojevic, David Gao,

Piezoelectric ceramics are characterized as smart materials and have been widely used in the area of actuators and sensors. The principle operation of a piezoelectric transformer (PT) is a combined function of actuators and sensors so that energy can be transformed from electrical form to electrical form via mechanical vibration. Since PTs behave as band-pass filters, it is particularly importa...

2017
M. Sol Sanchez, F. R. Montero de Espinosa, J. San Emeterio,

2012
Thibaut Weller, Christian Licht,

We study the asymptotic behavior of a three dimensional flat, heterogeneous and anisotropic piezoelectric body when its thickness seen as a parameter goes to zero. Depending on the type of the electrical loading two models are obtained which are related to the plate used as a sensor or as an actuator. These models are explicitly derived in any piezoelectric crystal symmetry class. For some of t...

2010
ZHEN LUO, WEI GAO, CHONGMIN SONG,

A new multi-objective topology optimization method is proposed in this study for systematic design of multi-phase piezoelectric actuators. The actuator under consideration is composed of a compliant host structure equipped with piezoelectric elements, where the host structure serves as a compliant amplifier to enlarge the small stroke output generated by the actuation force of piezoelectric mat...

2011
Ilie ROMANIUC,

This paper introduces the piezoelectric ultrasonic motors, the historical context of their development and current trends of research and development.

Journal: :The Review of scientific instruments 2014
N C Carvalho, Y Fan, J-M Le Floch, M E Tobar,

A piezoelectric voltage coupled microwave reentrant cavity has been developed. The central cavity post is bonded to a piezoelectric actuator allowing the voltage control of small post displacements over a high dynamic range. We show that such a cavity can be implemented as a voltage tunable resonator, a transducer for exciting and measuring mechanical modes of the structure, and a transducer fo...

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