Results 21 to 30 of about 35,260 (285)
Analysis of ultrasonic transducers with fractal architecture [PDF]
, 2008 Ultrasonic transducers composed of a periodic piezoelectric composite are generally accepted as the design of choice in many applications. Their architecture is normally very regular and this is due to manufacturing constraints rather than performance ...
ANTHONY J. MULHOLLAND +9 more
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Radial Vibration Characteristics of Piezoelectric Ceramic Composite Ultrasonic Transducer
Shock and Vibration, 2020 Different from the existing equivalent circuit analysis method of the transducer, based on the vibration theory of the mechanical system and combined with the constitutive equation, this paper analyzes the radial vibration characteristics of the ...
Chundong Yao +3 more
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Compensation of Hysteresis on Piezoelectric Actuators Based on Tripartite PI Model
Micromachines, 2018 Piezoelectric ceramic actuators have been widely used in nanopositioning applications owing to their fast response, high stiffness, and ability to generate large forces.
Dong An +3 more
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Factors affecting calcining temperatures of BZT–BCT ceramics
Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2020 Piezoelectric ceramic 0.48Ba[Zr0.2Ti0.8]O3 – 0.52[Ba0.7Ca0.3]TiO3 (BZT–BCT) with nanostructure was manufactured with traditional ceramic technology. The nanostructure and the sintering aid reduce the calcining temperature from 1250 to 1170 °C and the ...
Bui Thi Ngoc Anh +5 more
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Piezoelectric properties of polyamide 11/NaNbO3nanowire composites [PDF]
, 2012 Polyamide 11(PA 11)/sodium niobate nanowire (NW) 0–3 composites with different volume fractions of NWs were synthesized. The electric polarization (P) was measured as a function of the applied electric field (E).
Capsal, Jean-Fabien +4 more
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A theoretical analysis of a piezoelectric ultrasound device with an active matching layer [PDF]
, 2007 This paper investigates the use of magnetically active materials in the matching layer of a piezoelectric transducer. This then allows the performance of the device to be dynamically altered by applying an external field.
Hayward, G. +6 more
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, 2010 Porous piezoceramics find nowadays many applications as ultrasonic transducers. The introduction of a controlled porosity into a piezoelectric ceramic could in fact strongly improve the acoustic performances for this kind of applications. In this chapter the more recent literature on the processing of porous ceramics has been reviewed.
Mercadelli E, Sanson A, Galassi C
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Unconventional piezoelectric coefficients in perovskite piezoelectric ceramics
Journal of Materiomics, 2021 Piezoelectric ceramics exhibit three conventional piezoelectric coefficients, i.e., d33, d31, d15, due to their ∞mm crystal symmetry. Unconventional piezoelectric coefficients, such as d11, d12, d13, d14, d16, etc., can only be extracted from piezoelectric single crystals of special symmetry with specific cut direction.
Jingen Wu +13 more
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Chemical Engineering Transactions, 2017 Aimed at the high water and high alkali environment in concrete, a small embedded piezoelectric ceramic sensor for monitoring reinforced concrete structure is developed, and its basic performance parameters are given.
Zhijian Shu
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Investigating the thermal stability of 1-3 piezoelectric composite transducers by varying the thermal conductivity and glass transition temperature of the polymeric filler material [PDF]
, 2002 The thermal behaviour of a number of 1-3 piezoelectric composite transducers is discussed. In particular, devices manufactured from a polymer filler with a relatively high glass to rubber transition temperature (T-g), and from polymer systems with ...
Benny, C.G. +6 more
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