Modeling Pulsed High-Power Spikes in Tunable HV Capacitive Drivers of Piezoelectric Wideband Transducers to Improve Dynamic Range and SNR for Ultrasonic Imaging and NDE

The signal-to-noise ratios (SNR) of ultrasonic imaging and non-destructive evaluation (NDE) applications can be greatly improved by driving each piezoelectric transducer (single or in array) with tuned HV capacitive-discharge drivers. These can deliver spikes with kW pulsed power at PRF ≈ 5000 spike...

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Autores principales:	Antonio Ramos, Abelardo Ruiz, Enrique Riera
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	efficient ultrasonic transceivers wideband piezoelectric transducers industrial NDE medical imaging pulsed high-power spikes HV capacitive-discharge drivers Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/4eef4d84a8a441698cf1735ad4c9fa76
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spelling	oai:doaj.org-article:4eef4d84a8a441698cf1735ad4c9fa762021-11-11T19:10:07ZModeling Pulsed High-Power Spikes in Tunable HV Capacitive Drivers of Piezoelectric Wideband Transducers to Improve Dynamic Range and SNR for Ultrasonic Imaging and NDE10.3390/s212171781424-8220https://doaj.org/article/4eef4d84a8a441698cf1735ad4c9fa762021-10-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7178https://doaj.org/toc/1424-8220The signal-to-noise ratios (SNR) of ultrasonic imaging and non-destructive evaluation (NDE) applications can be greatly improved by driving each piezoelectric transducer (single or in array) with tuned HV capacitive-discharge drivers. These can deliver spikes with kW pulsed power at PRF ≈ 5000 spikes/s, achieving levels higher even than in CW high-power ultrasound: up to 5 kW<sub>pp</sub>. These conclusions are reached here by applying a new strategy proposed for the accurate modeling of own-design re-configurable HV capacitive drivers. To obtain such rigorous spike modeling, the real effects of very high levels of pulsed intensities (3–10 A) and voltages (300–700 V) were computed. Unexpected phenomena were found: intense brief pulses of driving power and probe emitted force, as well as nonlinearities in semiconductors, though their catalog data include only linear ranges. Fortunately, our piezoelectric and circuital devices working in such an intense regime have not shown serious heating problems, since the finally consumed “average” power is rather small. Intensity, power, and voltage, driving wideband transducers from our capacitive drivers, are researched here in order to drastically improve (∆ >> 40 dB) their ultrasonic “net dynamic range available” (NDRA), achieving emitted forces > 240 Newtons<sub>pp</sub> and receiving ultrasonic signals of up to 76–205 V<sub>pp</sub>. These measurements of ultrasonic pulsed voltages, received in NDE and Imaging, are approximately 10,000 larger than those usual today. Thus, NDRA ranges were optimized for three laboratory capacitive drivers (with six commercial transducers), which were successfully applied in the aircraft industry for imaging landing flaps in Boeing wings, despite suffering acoustic losses > 120 dB.Antonio RamosAbelardo RuizEnrique RieraMDPI AGarticleefficient ultrasonic transceiverswideband piezoelectric transducersindustrial NDEmedical imagingpulsed high-power spikesHV capacitive-discharge driversChemical technologyTP1-1185ENSensors, Vol 21, Iss 7178, p 7178 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	efficient ultrasonic transceivers wideband piezoelectric transducers industrial NDE medical imaging pulsed high-power spikes HV capacitive-discharge drivers Chemical technology TP1-1185
spellingShingle	efficient ultrasonic transceivers wideband piezoelectric transducers industrial NDE medical imaging pulsed high-power spikes HV capacitive-discharge drivers Chemical technology TP1-1185 Antonio Ramos Abelardo Ruiz Enrique Riera Modeling Pulsed High-Power Spikes in Tunable HV Capacitive Drivers of Piezoelectric Wideband Transducers to Improve Dynamic Range and SNR for Ultrasonic Imaging and NDE
description	The signal-to-noise ratios (SNR) of ultrasonic imaging and non-destructive evaluation (NDE) applications can be greatly improved by driving each piezoelectric transducer (single or in array) with tuned HV capacitive-discharge drivers. These can deliver spikes with kW pulsed power at PRF ≈ 5000 spikes/s, achieving levels higher even than in CW high-power ultrasound: up to 5 kW<sub>pp</sub>. These conclusions are reached here by applying a new strategy proposed for the accurate modeling of own-design re-configurable HV capacitive drivers. To obtain such rigorous spike modeling, the real effects of very high levels of pulsed intensities (3–10 A) and voltages (300–700 V) were computed. Unexpected phenomena were found: intense brief pulses of driving power and probe emitted force, as well as nonlinearities in semiconductors, though their catalog data include only linear ranges. Fortunately, our piezoelectric and circuital devices working in such an intense regime have not shown serious heating problems, since the finally consumed “average” power is rather small. Intensity, power, and voltage, driving wideband transducers from our capacitive drivers, are researched here in order to drastically improve (∆ >> 40 dB) their ultrasonic “net dynamic range available” (NDRA), achieving emitted forces > 240 Newtons<sub>pp</sub> and receiving ultrasonic signals of up to 76–205 V<sub>pp</sub>. These measurements of ultrasonic pulsed voltages, received in NDE and Imaging, are approximately 10,000 larger than those usual today. Thus, NDRA ranges were optimized for three laboratory capacitive drivers (with six commercial transducers), which were successfully applied in the aircraft industry for imaging landing flaps in Boeing wings, despite suffering acoustic losses > 120 dB.
format	article
author	Antonio Ramos Abelardo Ruiz Enrique Riera
author_facet	Antonio Ramos Abelardo Ruiz Enrique Riera
author_sort	Antonio Ramos
title	Modeling Pulsed High-Power Spikes in Tunable HV Capacitive Drivers of Piezoelectric Wideband Transducers to Improve Dynamic Range and SNR for Ultrasonic Imaging and NDE
title_short	Modeling Pulsed High-Power Spikes in Tunable HV Capacitive Drivers of Piezoelectric Wideband Transducers to Improve Dynamic Range and SNR for Ultrasonic Imaging and NDE
title_full	Modeling Pulsed High-Power Spikes in Tunable HV Capacitive Drivers of Piezoelectric Wideband Transducers to Improve Dynamic Range and SNR for Ultrasonic Imaging and NDE
title_fullStr	Modeling Pulsed High-Power Spikes in Tunable HV Capacitive Drivers of Piezoelectric Wideband Transducers to Improve Dynamic Range and SNR for Ultrasonic Imaging and NDE
title_full_unstemmed	Modeling Pulsed High-Power Spikes in Tunable HV Capacitive Drivers of Piezoelectric Wideband Transducers to Improve Dynamic Range and SNR for Ultrasonic Imaging and NDE
title_sort	modeling pulsed high-power spikes in tunable hv capacitive drivers of piezoelectric wideband transducers to improve dynamic range and snr for ultrasonic imaging and nde
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4eef4d84a8a441698cf1735ad4c9fa76
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Modeling Pulsed High-Power Spikes in Tunable HV Capacitive Drivers of Piezoelectric Wideband Transducers to Improve Dynamic Range and SNR for Ultrasonic Imaging and NDE

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