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doctoral thesis
Procjena mjerne nesigurnosti ultrazvučnog mjerenja debljine stijenke
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2015. urn:nbn:hr:235:487461
Mihaljević, Morana
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Mihaljević, M. (2015). Procjena mjerne nesigurnosti ultrazvučnog mjerenja debljine stijenke (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:487461

Mihaljević, Morana. "Procjena mjerne nesigurnosti ultrazvučnog mjerenja debljine stijenke." Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2015. https://urn.nsk.hr/urn:nbn:hr:235:487461

Mihaljević, Morana. "Procjena mjerne nesigurnosti ultrazvučnog mjerenja debljine stijenke." Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2015. https://urn.nsk.hr/urn:nbn:hr:235:487461

Mihaljević, M. (2015). 'Procjena mjerne nesigurnosti ultrazvučnog mjerenja debljine stijenke', Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 25 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:487461

Mihaljević M. Procjena mjerne nesigurnosti ultrazvučnog mjerenja debljine stijenke [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2015 [cited 2024 November 25] Available at: https://urn.nsk.hr/urn:nbn:hr:235:487461

M. Mihaljević, "Procjena mjerne nesigurnosti ultrazvučnog mjerenja debljine stijenke", Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:235:487461

Metadata
TitleProcjena mjerne nesigurnosti ultrazvučnog mjerenja debljine stijenke
Title (english)Measurement uncertainty estimation of the ultrasonic thickness measurement
AuthorMorana Mihaljević
MentorDamir Markučič (mentor)
Committee memberJosip Stepanić (predsjednik povjerenstva)
Committee memberDamir Markučič (član povjerenstva)
Committee memberBiserka Runje (član povjerenstva)
Committee memberŽeljko Alar (član povjerenstva)
Committee memberDuško Pavletić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2015-07-01, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Production Mechanical Engineering
Universal decimal classification
(UDC)		620 - Materials testing. Power stations. Economics of energy
669 - Metallurgy
Abstract
Kao dio upravljanja kvalitetom postrojenja i sustava često se provodi ultrazvučno mjerenje debljine (Ultrasonic Thickness Measurement, UTM) za čiju je primjenu dovoljan pristup s jedne strane mjerene komponente. Ova široko primjenjiva ultrazvučna tehnika daje kvantitativnu informaciju o debljini stijenke i kao takva pripada području mjeriteljske djelatnosti. U radu je provedeno istraživanje i karakterizacija utjecajnih faktora i značajki elemenata ultrazvučnog mjernog sustava na rezultat ultrazvučnog mjerenja debljine stijenke. Teorijskim razmatranjem i provedbom eksperimenata analizirana je značajnost utjecaja pojedinih parametara i njihovih interakcija. Primjenom planova pokusa i odgovarajuće metodologije za analizu rezultata eksperimenata stvoreni su preduvjeti za procjenu mjerne nesigurnosti rezultata ultrazvučnog mjerenja debljine stijenke. Da bi se procijenila mjerna nesigurnost, analizirani su utjecajni faktori na točnost i preciznost ultrazvučnog mjerenja debljine stijenke. Razvijen je i matematički model za procjenu mjerne nesigurnosti te je kvantificiran doprinos karakterističnih članova regresijskog modela. Temeljem provedenih istraživanja iskazana je mjerna nesigurnost rezultata mjerenja kod primjene odabranog ultrazvučnog mjernog sustava. Procjena mjerne nesigurnosti u postupku ultrazvučnog mjerenja debljine stijenke provedena je primjenom Monte Carlo simulacija (MCS).
Abstract (english)
Ultrasonic thickness measurement (UTM) is used as a part of structure and component integrity assessment. UTM requires access from one side of measured component. This widely used ultrasonic technique provides quantitative information about the material thickness so consequently, UTM belongs to a field of measurements activities. The work presents an experimental research and characterization of influential factors and characteristics of ultrasonic measurements system on ultrasonic thickness measurement results. Using theoretical and experimental analysis, a significance of influential factors and their interactions was examined. With the goal to estimate the measurement uncertainty of the ultrasonic thickness measurement, design of experiments is applied and methodology for experiment results analysis is created. In order to estimate the measurement uncertainty of ultrasonic thickness measurements, all factors that influence accuracy and precision were analysed. The mathematical model for ultrasonic thickness measurement uncertainty estimation was developed and contribution of particular parameters of regression models was quantified. The measurement uncertainty of specific ultrasonic measurement system was presented in accordance to the research. Monte Carlo simulation was used for ultrasonic thickness measurement uncertainty estimation.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:487461
Study programmeTitle: Mechanical Engineering and Naval Architecture
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje tehničkih znanosti (doktor/doktorica znanosti, područje tehničkih znanosti)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-04-21 18:39:38