Monte Carlo simulacija u procjeni mjerne nesigurnosti krivulje plastičnog tečenja dobivene modificiranim hidrauličkim udubljivanjem

Piljek, Petar and Runje, Biserka and Keran, Zdenka and Škunca, Marko (2017) Monte Carlo simulacija u procjeni mjerne nesigurnosti krivulje plastičnog tečenja dobivene modificiranim hidrauličkim udubljivanjem. = Monte Carlo simulation of measurement uncertainty in modified hydraulic bulging determination of flow stress. Tehnički vjesnik – Technical Gazette: Scientific professional Journal of technical faculties of the Josip Juraj Strossmayer University of Osijek., 24 (3). pp. 649-653. ISSN 1330-3651. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q4 (2017). Točan broj autora: 4.

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Abstract (Croatian)

U radu je provedena procjena mjerne nesigurnosti rezultata mjerenja korištenih za određivanja krivulje plastičnog tečenja u postupku modificiranog hidrauličnog udubljivanja. Postupak modificiranog hidrauličnog udubljivanja je novo razvijena metoda koja služi za snimanje krivulje plastičnog tečenja materijala, a temelji se na klasičnom postupku hidrauličnog udubljivanja. Na eksperimentalnom postavu pomoću kojeg je moguće provesti oba navedena postupka snimljena je krivulja plastičnog tečenja aluminija. Pretpostavljeno je membransko stanje naprezanja materijala te je izveden uvjet plastičnog tečenja materijala koji je neophodan za snimanje krivulje plastičnog tečenja. Eksperimentalno dobivena krivulja plastičnog tečenja uspoređena je sa standardiziranom krivuljom plastičnog tečenja. Procjena mjerne nesigurnosti provedena je primjenom Monte Carlo simulacije.

Abstract

In this paper an estimation of measurement uncertainty in determining the flow stress curve by modified hydraulic bulging was carried out. Modified hydraulic bulging is a newer method of the stress-strain diagram acquisition. The method has been derived from the hydraulic bulge test. The flow stressstrain curves were established for an aluminium sheet on an experimental apparatus designed for both methods. The assumption of the membrane stress state was used and the flow rule was determined, which was necessary for establishing the flow stress-true strain curve. The comparison between the experimentally obtained curve and standard true stress – true strain curve from literature is showed on a diagram. The estimation of measurement uncertainty was performed using the Monte Carlo simulation.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Uncontrolled Keywords: krivulja plastičnog tečenja; mjerna nesigurnost; modificirano hidraulično udubljivanje; Monte Carlo simulacija
Keywords (Croatian): flow stress curve; measurement uncertainty; modified hydraulic bulging; Monte Carlo simulation
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 1200 Department of Technology
1200 Department of Technology > 1220 Chair of Metal Forming
800 Department of Quality > 810 Chair of Precise Measurement and Quality
Indexed in Web of Science: Yes
Indexed in Current Contents: No
Citations JCR: 0 (06.09.2018.)
Quartiles: Q4 (2017)
Date Deposited: 16 May 2018 10:38
Last Modified: 06 Sep 2018 11:19
URI: http://repozitorij.fsb.hr/id/eprint/8589

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