Construction equipment, agricultural tractors and cross-country vehicles can only perform their given tasks when tyre matches the vehicle design, weight ground on which they operate. This Research involves design fabrication of a digital tractive transducer to measure effects press wheel vertical force germination rate grain crops. Design criteria, calculations analysis various components were ...

The electromagnetic ultrasound detection technology provides an efficient method to inspect the structural health status. For pipeline structure, guided ultrasonic wave propagating along axial direction has been focus of current research. However, helical owns advantage obtaining defect information in extra angles and not explored sufficiently. In this work, a transducer with sector configurati...

Treebag is a software for experimenting with formal models in Computer Science, one type of such models being tree transducers. Tree transducers translate input trees to output trees, a mechanism used in e.g. compilers and picture generation. The top-down tree transducer is one of the formal models implemented as a component in Treebag. Compared to the top-down tree transducer, the macro tree t...

Float type liquid level sensor is generally used as a very simple technique for local level indication and level switching. In the present paper a technique has been proposed to transmit the measured liquid level signal of a float type sensor at remote terminal using a modified differential inductance type electromechanical transducer. The theoretical characteristic equation of this transducer ...

AbstmclIn this paper, a 400-pm x 40C-prn, 2-D eapacitive micromachined ultrasonic transducer array element is experimentally characterized, and the results are found to be in agreement with theoretical predictions. As a receiver the transducer has a 1.8 x lo-' n m / m displacement sensitivity, and, as a transmitter, it produces 16.4 kPa/V of output pressure at the transducer surface at 3 MHz. T...

Wafer-type PZT transducers are very effective as active sensors for Lamb wave studies in elastic plates and in steel bridge girders. It has been demonstrated that a single transducer can be used in pulse-echo mode, transmitting a transient waveform and then detecting return signals echoing from boundaries, irregularities, and flaws such as cracks. We describe here an inductively-coupled system ...

The characterization of NDE transducers involves an assessment of the bidirectional acoustoelectric conversion between electrical and acoustic terminals and an evaluation of the near and farfield radiation patterns. The internal details of the transducer are largely unknown and, consequently, the traditional techniques for analyzing the structures cannot be applied. Instead, the transducer may ...

Underwater acoustic signals need transducers to generate and detect signals with high power, linearity, dynamic-range and beamwidth. Among a variety of transducer designs, a Tonpilz transducer stands out for power and long-range applications. A Tonpilz transducer for underwater acoustic signaling is developed to scale and analyzed using FEM tools with Comsol. The underlying pressure-acoustics a...