[PDF] Top 20 Nonlinearity in the dynamic response of flexural ultrasonic transducers

... amplitude response of a FUT has been shown to be a superposition of steady-state and natural decay, or ring-down [2], where steady-state occurs due to a driving force applied to the FUT, and ring-down occurs upon ... See full document

... the dynamic nonlinearity in the vibra- tion response of different designs of flexural ultrasonic trans- ducer, comprising both commercial and custom-fabricated ...generate ... See full document

... its dynamic characteristics. The dynamic response of a commercial-type FUT (Multicomp) is investigated in this research, in air at ambient conditions, using laser Doppler vibrometry (LDV), supported ... See full document

... material nonlinearity of the supporting soil medium to study the dynamic response of rigid pavement resting on two- parameter soil medium which is subjected to moving load by considering vehicle as a ... See full document

... measured response signal, where there are fewer additional ultrasonic waves compared to the two VFUTs as 𝑇 and 𝑅 ...further ultrasonic wave can be seen to emerge, as shown in the signal for the CFUT ... See full document

... a flexural ultrasonic transducer can be undertaken through different techniques including laser Doppler vibrometry (LDV) or with an acoustic ...two flexural ultrasonic transducers ... See full document

... the dynamic characteristics are accurately ...sharp response profile which is due to the wideband characteristic of the transducer which produces a high measurement resolution in the time ... See full document

... Flexural ultrasonic transducers have been widely used as proximity sensors and as part of industrial metrology ...these transducers to have the capability to operate in both liquid and gas, at ... See full document

... example X-Ray imaging, but this is expensive, slow and provides an unnecessarily high level of detail. Also, for ultrasound transducer purposes we are more interested in the dynamic properties. Without the ... See full document

... of flexural ultrasonic sensors include the use of imped- ance analysers, measuring a frequency swept response of a sensor using secondary calibrated ultrasonic generators or detectors, or ... See full document

... array transducers for flow measurement ...vibration response approaching ...transducer response, and so an improved understanding of the dynamic performance of FUTs is essential, particularly ... See full document

... In this section the formulations for the design of the quiet zones in diffuse fields using ultrasonic transducers are presented. The primary field used in the work is assumed to be diffuse and comprised of ... See full document

... Langevin ultrasonic transducers with lateral dimensions larger than a quarter of the longitudinal wave ...Langevin transducers are widely used in various applications such as cleaning, plastic and ... See full document

... Flexural transducers share many traits with the more recently developed piezoelectric micromachined ultrasonic transducers (pMUTs) [28], which combine the enhanced fluid coupling of ... See full document

... An elementary pipe segment (Fig.1) is subjected to flexural dynamic loads per unit length F ex (z,t) and F ey (z,t), and bending moments per unit length M ex (z,t) and M ey (z,t). Taking into account ... See full document

... compares ultrasonic signals obtained by an idealized transducer and a finite-bandwidth ...transducer. Ultrasonic signals are excited by a point optical ... See full document

... This paper summarizes a nonlinear model which quantifies the displacements generated in THUNDER actuators in response to applied voltages for a variety of boundary conditions and exogenous loads. A PDE model is ... See full document

... sound, ultrasonic sensors, commonly called transceivers will be ...used transducers are contact transducers, angle beam transducers, delay line transducers, immersion ... See full document

... As light travels deeper into the tissue, tight optical focusing is no longer achievable due to multiple scattering events of photons [23]. Correspondingly, for an acoustic-resolution PA system, weakly “focused” light is ... See full document

... the ultrasonic frequency recorded using the oscillating ultrasonic sensor closely followed the temperature measurements from the conventional sensor without any noticeable output frequency jumps for any of ... See full document