Analiza križnega preizkušanca za materialno testiranje in karakterizacijo MT 2.0

Močnik, Andraž (author), Starman, Bojan (mentor), Halilovič, Miroslav (comentor)

V magistrski nalogi so bile obravnavane omejitve metodologije materialnega testiranja 2.0 (MT2.0), ki temelji na DIC in VFM. Za trgalni stroj za materialno karakterizacijo je bila predlagana merilna celica 10 kN. Z virtualnim eksperimentom v okoljih ABAQUS/Standard in MatchID ter realnim naključnim vzorcem je bil analiziran vpliv geometrije, šuma in korelacije na natančnost rezultatov. Validacija je potrdila zanesljivost križnega preizkusa. Ugotovljena je bila ustreznost 2D DIC tehnike, oblikovane pa so bile tudi smernice za izbiro optimalnih nastavitev korelacije.

• Language: Slovenian
• Keywords: materialno testiranje MT 2.0, korelacija digitalnih slik (DIC), anizotropija, metoda virtualnih polj (VFM), križni preizkušanec, ravninsko napetostno stanje (RNS)
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2025
• Number of pages: XXII, 73 str.
• PID: 20.500.12556/RUL-171417
• UDC: 620.1:531.7:004.942(043.2)
• COBISS.SI-ID: 246924547
• Publication date in RUL: 26.08.2025

Secondary language

• Language: English
• Title: Analysis of a cruciform test specimen for material testing and characterization MT 2.0

Abstract

The master's thesis addressed the limitations of the material testing 2.0 (MT2.0) methodology, which is based on DIC and VFM. A 10 kN load cell was proposed for the testing machine used in material characterization. Using a virtual experiment in ABAQUS/Standard and MatchID environments with a real random speckle pattern, the influence of specimen geometry, image noise, and correlation on the accuracy of the results was analyzed. Validation confirmed the reliability of the cruciform specimen. The adequacy of the 2D DIC technique was established, and guidelines for selecting optimal correlation settings were developed.

• Keywords: material testing MT 2.0, digital image correlation (DIC), anisotropy, virtual fields method (VFM), cruciform test specimen, plane stress state