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undergraduate thesis
Otpornost subfosilnog hrasta na abrazijsko trošenje
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. urn:nbn:hr:235:969470
Gojanović-Rakić, Matej
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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Gojanović Rakić, M. (2018). Otpornost subfosilnog hrasta na abrazijsko trošenje (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:969470

Gojanović Rakić, Matej. "Otpornost subfosilnog hrasta na abrazijsko trošenje." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. https://urn.nsk.hr/urn:nbn:hr:235:969470

Gojanović Rakić, Matej. "Otpornost subfosilnog hrasta na abrazijsko trošenje." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. https://urn.nsk.hr/urn:nbn:hr:235:969470

Gojanović Rakić, M. (2018). 'Otpornost subfosilnog hrasta na abrazijsko trošenje', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 17 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:969470

Gojanović Rakić M. Otpornost subfosilnog hrasta na abrazijsko trošenje [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2018 [cited 2024 November 17] Available at: https://urn.nsk.hr/urn:nbn:hr:235:969470

M. Gojanović Rakić, "Otpornost subfosilnog hrasta na abrazijsko trošenje", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:235:969470

Metadata
TitleOtpornost subfosilnog hrasta na abrazijsko trošenje
Title (english)The abrasive wear resistance of subfossil oak wood
AuthorMatej Gojanović-Rakić
MentorVera Rede (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2018-03-01, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Cilj ovog rada bio je istražiti kako vrijeme provedeno u vodenom, anaerobnom okruženju utječe na abrazijska svojstva subfosilnog drva hrasta. To je određeno usporedbom abrazijskih svojstava subfosilnog drva hrasta, izvađenog iz korita rijeke Save, s recentnim hrastom iz istog područja. Zbog svojih mehaničkih svojstava hrast je jedna od naših najcjenjenijih vrsta, a osobito je cijenjeno subfosilno drvo hrasta. Metodom 14C radiokarbonskog datiranja subfosilnim uzorcima je određena starost. Također je određena gustoća te mikro i makrostruktura svih uzoraka. Abrazijska otpornost je ispitana na uređaju Taber abrader, korištenjem sedam različitih brusnih papira. Oba subfosilna hrasta imaju nižu gustoću i troše se više od recentnog. Starost i gustoća subfosilnih uzoraka nisu direktno povezani s intenzitetom abrazijskog trošenja. Mlađi subfosilni hrast (890 god.) ima višu gustoću i više se troši od starijeg subfosilnog hrasta (1195 god.). Povećanjem abrazivnog zrna, intenzitet trošenja raste linearno kod svih uzoraka do granične veličine abrazivnog zrna, nakon čega blago pada.
Abstract (english)
The goal of this paper was to determine how time spent in a wet, anaerobic environment influences the abrasive wear resistance of subfossil oak. That was determined by comparing abrasive properties of the subfossil wood, found in Sava river, with the abrasive properties of a recent oak specimen. Due to its mechanical properties, oak is one of the most esteemed trees in Croatia. The age of the three samples was first measured using 14C radiocarbon dating. Furthermore, their density as well as their their micro and macrostructure were determined, and were followed by measuring their abrasive properties using seven different sandpapers on a machine for Taber abrasion. After the examination and analysis, it was concluded that both subfossil oaks have a lower density and abrasive resistance than the recent sample. Age and density of subfossil samples are not directly linked to their abrasive wear resistance. The younger subfossil oak (890 yrs.) has a higher density and wears out more than the older subfossil oak (1195 yrs.). By increasing abrasive size, wear rate intensity of all samples grows with a linear trend, up until a critical abrasive size, after which it declines.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:969470
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2019-05-22 21:59:24