ultrasonic transducersair-coupled ultrasoundtransducer optimizationimpedance mismatchair-coupled spectroscopymaterials characterizationThe main objective of this study was to apply the air-coupled broad-band ultrasonic spectroscopy in attached transpiring leaves of Vitis vinifera L. to monitor changes in leaf ...
Hello We are interested in running an experiment with PGA460-Q1 EVM using the 40KHz Prowave 043SR750 for long range measurements. As per the specs, this can be driven at a maximum voltage of 1500 Vpp. I am wondering if you have tried driving this transducer at its...
Based on the research of inductance capacitance matching circuits of ultrasonic transducer, influence of ultrasound transducer electricity parameter on its matching circuit has been studied. 在研究压电超声换能器电感电容匹配电路原理的基础上,分析换能器工作时,由于温度等环境因素变化而引起的各项电性能参数的...
A reflection non-contact ultrasonic microscope system working both in amplitude and phase difference modes at 2 MHz has been developed using an air-coupled concave transducer made of piezoelectric polymer films of poly(vinylidene fluoride/trifluoroethylene) [P(VDF/TrFE)]. The transducer is composed of...
Investigation of inductively coupled ultrasonic transducer system for NDE Inductive coupling offers a simple solution to wirelessly probe ultrasonic transducers. This paper investigates the theory and feasibility of such an induc... Cheng Huan Zhong,,Croxford, A. J,Wilcox, P. D - 《IEEE Transactions...
Air-coupled ultrasound has been used to study the manufacture of ceramic components by both slip casting and injection moulding. A capacitance transducer, ... AG Bashford,DA Hutchins - 《Ultrasonics》 被引量: 258发表: 1998年 High-temperature integrated and flexible ultrasonic transducers for nondestr...
This paper proposes a novel passive focusing system for Air-Coupled Ultrasonic (ACU) piezoelectric transducers which is inspired by the Newtonian–Cassegrain (NC) telescope concept. It consist of a primary spherical mirror with an output hole and a flat secondary mirror, normal to the propagation ...
2) High-frequency ultrasonic transducer 高频超声换能器 例句>> 3) air acousto-optic deflection 空气超声换能器 例句>> 4) multi-frequency ultrasonic transducer 复频超声换能器5) air-coupled transducer 气介超声换能器6) Bi-frequency focused ultrasound transducer 复频聚焦超声换能器...
Research results show that air-coupled ultrasonic guided waves can be used for delamination damage detection effectively in laminated composite beams. 展开 关键词: delamination detection composite beam Lamb wave mode air-coupled ultrasonic transducer three-dimensional finite element simulation ...
Air-coupled ultrasonic probes require a special design approach and handling due to the significant mismatch to the air. Outer matching layers have to be soft so can be easily damaged and excitation voltages might cause the degradation of electrodes or bonding between the layers. Integrity inspection...