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Now showing items 1-10 of 162
Efficacy of linear and convex transducers for ultrasound-guided transvaginal follicle aspiration
(Elsevier B.V., 2003-03-01)
A new device was developed to hold linear transducers for transvaginal follicle aspiration. Efficacy of follicle aspiration was compared using a linear 6 MHz and a convex 5 MHz transducer. Fifty-five cows were submitted ...
Open and Standardized Resources for Smart Transducer Networking
(Institute of Electrical and Electronics Engineers (IEEE), 2009-10-01)
IEEE 1451 standard is intended to address the smart transducer interfacing problem in network environments. Usually, proprietary hardware and software are a very efficient solution for implementing the aforementioned ...
Piezoelectric transducers assessed by the pencil lead break for impedance-based structural health monitoring
(Ieee-inst Electrical Electronics Engineers Inc, 2015)
A strain gauge tactile sensor for finger-mounted applications
(Institute of Electrical and Electronics Engineers (IEEE), 2002-02-01)
This paper describes a strain gauge-based sensor used for measuring finger force. The theory, design, and sensor construction details are presented. It was constructed using metallic strain gauges and a carefully designed ...
The photothermal transparent transducer method applied to the spectroscopy of liquids
(Elsevier B.V. Sa, 2009-03-02)
A new kind of spectroscopy of liquids is presented: the photothermal transparent transducer method applied to the spectroscopy of liquid samples. The liquid sample is placed in a small (approximately 20 ml) chamber with a ...
Vibration energy harvesting using piezoelectric transducer and non-controlled rectifiers circuits
(Abcm Brazilian Soc Mechanical Sciences & Engineering, 2012-01-01)
Vibration energy harvesting with piezoelectric materials is of practical interest because of the demand for wireless sensing devices and low-power portable electronics without external power supply. For practical use of ...
Optimal Frequency Range Selection for PZT Transducers in Impedance-Based SHM Systems
(Institute of Electrical and Electronics Engineers (IEEE), 2010-08-01)
Piezoelectric transducers of PZT (lead zirconate titanate) have been widely used in structural health monitoring (SHM) systems based on the electromechanical (E/M) impedance technique. In this technique, damages in the ...
Transducer Loading Effect on the Performance of PZT-Based SHM Systems
(Institute of Electrical and Electronics Engineers (IEEE), 2010-04-01)
In the last years, the piezoelectric transducers of lead zirconate titanate (PZT) have been widely used in structural health monitoring (SHM) systems based on the electromechanical (E/M) impedance technique. Although many ...
Assessment of the ergonomic design of diagnostic ultrasound transducers through wrist movements and subjective evaluation
(Elsevier B.V., 2008-11-01)
This study presents procedures for assessing the redesign of ultrasound transducers. Wrist movements were recorded using elect rogoniometers. Perceptions of discomfort and acceptability of the new transducers were evaluated. ...
Influence of Excitation Signal on Impedance-based Structural Health Monitoring
(Sage Publications Ltd, 2010-09-01)
The electromechanical impedance (EMI) technique has been successfully used in structural health monitoring (SHM) systems on a wide variety of structures. The basic concept of this technique is to monitor the structural ...