Journal ArticleDOI
Efficient high voltage pulser for piezoelectric air coupled transducer.
TLDR
Pulser is capable to produce up to 1MHz pulse trains with positive 50V-1kV pulses with up to 10A peak output current and fully satisfies desired 1MHz bandwidth.About:
This article is published in Ultrasonics.The article was published on 2013-01-01. It has received 30 citations till now. The article focuses on the topics: Fall time & Rise time.read more
Citations
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Journal ArticleDOI
Towards non-contact photoacoustic imaging [review].
TL;DR: This paper presents a brief overview of current non-contact photoacoustic detection techniques with an emphasis on all-optical detection methods and their associated physical mechanisms.
Journal ArticleDOI
Passive focusing techniques for piezoelectric air-coupled ultrasonic transducers.
TL;DR: A novel passive focusing system for Air-Coupled Ultrasonic (ACU) piezoelectric transducers which is inspired by the Newtonian-Cassegrain telescope concept, which has a coaxial design, which eases the transducers positioning and use in many applications, and is less bulky than off-axis mirrors.
Journal ArticleDOI
Application of wavelet filtering and Barker-coded pulse compression hybrid method to air-coupled ultrasonic testing
TL;DR: In this article, a wavelet filtering and phase-coded pulse compression hybrid method is presented to improve the signal-to-noise (SNR) and output power of received signal.
Journal ArticleDOI
Improvement of Ultrasonic Pulse Generator for Automatic Pipeline Inspection.
Noé Amir Rodríguez-Olivares,José Vicente Cruz-Cruz,Alejandro Gómez-Hernández,Rodrigo Hernández-Alvarado,Luciano Nava-Balanzar,Tomas Salgado-Jimenez,J. A. Soto-Cajiga +6 more
TL;DR: The improvement of an ultrasonic pulse generator for a pipeline inspection gauge (PIG), which uses 64 transducers for inspecting distances up to 100 km with an axial resolution fixed at 3 mm and variable speeds between 0 and 2 m/s, is presented.
Journal ArticleDOI
Half bridge topology 500 V pulser for ultrasonic transducer excitation
TL;DR: Application of half bridge topology for ultrasonic transducer excitation using long pulse trains is presented and it is indicated that the output amplitude of the fundamental harmonic can reach 624 Vp-p for light loads and 552 V p-p when driving 50 Ω loads.
References
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Book
Introduction to Electromagnetic Compatibility
TL;DR: In this paper, the authors present the Phasor Solution Method for calculating per-unit-length parameters and Crosstalk of multiconductor transmission lines for EMC systems.
Journal ArticleDOI
Efficient charge recovery method for driving piezoelectric actuators with quasi-square waves
TL;DR: An efficient charge recovery method for driving piezoelectric actuators with low frequency square waves in low-power applications such as mobile microrobots is investigated and preliminary results show that 75% of charge can be recovered for bending actuators such as bimorphs without any component optimization at low fields.
Journal Article
Emerging NDT technologies and challenges at the beginning of the third millennium, Part 2
Journal Article
Emerging NDT technologies and challenges at the beginning of the third millennium, part 1
Journal ArticleDOI
Air-coupled ultrasonic evaluation of food materials.
TL;DR: The approach demonstrates that ultrasound has the potential for application to many industrial food packaging environments where non-metallic objects within food need to be detected, and for use in manufacturing plants on production lines, where contacting the product for ultrasonic inspection would not be feasible.