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master's thesis
Analiza utjecaja opterećenja na tvrdoću i lomnu žilavost tvrdog metala
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2015. urn:nbn:hr:235:491964
Vuić, Dario
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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Vuić, D. (2015). Analiza utjecaja opterećenja na tvrdoću i lomnu žilavost tvrdog metala (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:491964

Vuić, Dario. "Analiza utjecaja opterećenja na tvrdoću i lomnu žilavost tvrdog metala." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2015. https://urn.nsk.hr/urn:nbn:hr:235:491964

Vuić, Dario. "Analiza utjecaja opterećenja na tvrdoću i lomnu žilavost tvrdog metala." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2015. https://urn.nsk.hr/urn:nbn:hr:235:491964

Vuić, D. (2015). 'Analiza utjecaja opterećenja na tvrdoću i lomnu žilavost tvrdog metala', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:491964

Vuić D. Analiza utjecaja opterećenja na tvrdoću i lomnu žilavost tvrdog metala [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2015 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:235:491964

D. Vuić, "Analiza utjecaja opterećenja na tvrdoću i lomnu žilavost tvrdog metala", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:235:491964

Metadata
TitleAnaliza utjecaja opterećenja na tvrdoću i lomnu žilavost tvrdog metala
Title (english)Analysis of indentation size effect on hardness and fracture toughness of hard metal
AuthorDario Vuić
MentorDanko Ćorić (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2015-12-03, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U ovom radu su prikazani tvrdi metali s osvrtom na njihova svojstva, primjenu i postupak proizvodnje. U radu je analiziran utjecaj opterećenja na tvrdoću i lomnu žilavost tvrdog metala. Tvrdoća je mjerena metodom po Vickersu s četiri različita opterećenja: 29,42 N (HV3), 49,03 N (HV5), 196,13 N (HV20) i 294,20 N (HV30). Lomna žilavost je određena mjerenjem duljine pukotina koje se šire iz vrhova otiska. Pri tom su primjenjena četiri različita modela otpornosti lomu po Palmqvistu, Anstisu, Casellasu i Niihari. Dobiveni rezultati ukazuju da vrijednosti tvrdoće i lomne žilavosti variraju s obzirom na opterećenje utiskivanja indentora, a dodatno lomna žilavost ovisi i o modelu lomnog ponašanja.
Abstract (english)
In this master degree work are shown hard metals with review on their properties, application and manufacture process. In this work is analysed indentation size effect on hardness and fracture toughness of hard metal. Hardness was determined by method of Vickers, for four types of loads 29,42 N (HV3), 49,03 N (HV5), 196,13 N (HV20) i 294,20 N (HV30). Fracture toughness was determined by measuring crack length that spreads from indent tips. For that are applied four models of crack resistance: Palmqvist, Anstis, Casellas and Niihara. The results obtained show that the value of hardness and fracture toughness vary considering indentation load, and fracture toughness also depends on model of cracking behaviour.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:491964
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2019-05-22 14:59:30