dc.contributor	Horník Petr, Ing. Ph.D. : 62976
dc.contributor.advisor	Müller Miloš, Ing. Ph.D. : 55450
dc.contributor.author	Phan, Menghuot
dc.date.accessioned	2020-11-27T05:39:34Z
dc.date.available	2020-11-27T05:39:34Z
dc.date.committed	2021-4-30
dc.date.defense	2020-06-25
dc.date.submitted	2019-11-1
dc.date.updated	2020-6-25
dc.degree.level	Ing.
dc.description.abstract	Piezoelectric sensors based on the thin piezoelectric polyvinylidene fluoride (PVDF) polymer films are developed and fabricated to measure the interaction magnitude between the cavitating field and the material surface. In this thesis, PVDF sensors ware fabricated by photolithography processes. Kapton tape was tested to protect the sensors from the cavitation damage. The sensors developed within the thesis and commercial variants of the sensors were compared and analyzed. The drop ball calibration technique was used to set the sensitivity of the sensors to the impact forces. Four different ball-masses three and different drop heights were tested during the calibration. The relationship between the time duration of the signal generated by the sensors and the initial drop high in the calibration method was also analyzed. The different sizes and protective layer configurations of the PVDF sensor were prepared and tested. The developed PVDF sensor was successfully applied to the measurement of the acoustic cavitation field generated by ultrasonic horn proving higher sensitivity than commercial variant.	cs
dc.description.abstract	Piezoelectric sensors based on the thin piezoelectric polyvinylidene fluoride (PVDF) polymer films are developed and fabricated to measure the interaction magnitude between the cavitating field and the material surface. In this thesis, PVDF sensors ware fabricated by photolithography processes. Kapton tape was tested to protect the sensors from the cavitation damage. The sensors developed within the thesis and commercial variants of the sensors were compared and analyzed. The drop ball calibration technique was used to set the sensitivity of the sensors to the impact forces. Four different ball-masses three and different drop heights were tested during the calibration. The relationship between the time duration of the signal generated by the sensors and the initial drop high in the calibration method was also analyzed. The different sizes and protective layer configurations of the PVDF sensor were prepared and tested. The developed PVDF sensor was successfully applied to the measurement of the acoustic cavitation field generated by ultrasonic horn proving higher sensitivity than commercial variant.	en
dc.description.mark
dc.format	72
dc.format.extent	Ilustrace, Grafy, Tabulky None
dc.identifier.signature	V 202002425
dc.identifier.uri	https://dspace.tul.cz/handle/15240/158267
dc.language.iso	an
dc.relation.isbasedon	beginenumerate itemKIM, Ki-Han, Georges CHAHINE, Jean-Pierre FRANC a Ayat KARIMI. Advanced experimental and numerical techniques for cavitation erosion prediction. Dordrecht: Springer, [2014]. Fluid mechanics and its applications, v. 106. itemFRANC, Jean-Pierre a Jean-Marie MICHEL. Fundamentals of cavitation. Boston: Kluwer Academic Publishers, c2004. ISBN 1402022328. itemBRENNEN, Christopher E. Cavitation and bubble dynamics. New York: Cambridge University Press, c2014. ISBN 978-1-107-64476-2. itemSOYAMA, Hitoshi, MOMMA Takahiro, LICHTAROWICZ Andrzej and Edward WILLIAMS. A New Calibration Method for Dynamically Loaded Transducers and Its Application to Cavitation Impact Measurement. Journal of Fluids Engineering. 1998, 120(4). 10.1115/1.2820728. itemCONG, Jiqing, Jianping JING, Changmin CHEN a Zezeng DAI. Development of a PVDF Sensor Array for Measurement of the Dynamic Pressure Field of the Blade Tip in an Axial Flow Compressor. Sensors (Basel, Switzerland). 2019Mar, 19(6): 1404. DOI: 10.3390/s19061404. endenumerate
dc.rights	Vysokoškolská závěrečná práce je autorské dílo chráněné dle zákona č. 121/2000 Sb., autorský zákon, ve znění pozdějších předpisů. Je možné pořizovat z něj na své náklady a pro svoji osobní potřebu výpisy, opisy a rozmnoženiny. Jeho využití musí být v souladu s autorským zákonem https://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf a citační etikou https://knihovna.tul.cz/document/26	cs
dc.rights	A university thesis is a work protected by the Copyright Act. Extracts, copies and transcripts of the thesis are allowed for personal use only and at one?s own expense. The use of thesis should be in compliance with the Copyright Act. https://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf and the citation ethics https://knihovna.tul.cz/document/26	en
dc.rights.uri	https://knihovna.tul.cz/document/26
dc.rights.uri	https://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf
dc.subject	cavitation	cs
dc.subject	collapse	cs
dc.subject	PVDF sensor	cs
dc.subject	photolithography	cs
dc.subject	cavitation	en
dc.subject	collapse	en
dc.subject	PVDF sensor	en
dc.subject	photolithography	en
dc.title	Piezoelectric film sensors for the cavitation impact measurement	cs
dc.title	Piezoelectric film sensors for the cavitation impact measurement	en
dc.type	diplomová práce	cs
local.degree.abbreviation	Navazující
local.degree.discipline	KSA
local.degree.programme	Mechanical Engineering
local.degree.programmeabbreviation	N2301
local.department.abbreviation	KEZ
local.faculty	Fakulta strojní	cs
local.faculty.abbreviation	FS
local.identifier.author	S18000211
local.identifier.stag	40659
local.identifier.verbis
local.identifier.verbis	kpw06669234
local.note.administrators	automat
local.note.secrecy	Povoleno ZverejnitPraci Povoleno ZverejnitPosudky
local.poradovecislo	2425

Piezoelectric film sensors for the cavitation impact measurement

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