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master's thesis
Utjecaj veličine abrazivnog zrna i usmjerenosti strukture na abrazijsku otpornost hrasta kitnjaka (Quercus petraea)
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. urn:nbn:hr:235:551717
Bratić, Lucia
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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Bratić, L. (2023). Utjecaj veličine abrazivnog zrna i usmjerenosti strukture na abrazijsku otpornost hrasta kitnjaka (Quercus petraea) (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:551717

Bratić, Lucia. "Utjecaj veličine abrazivnog zrna i usmjerenosti strukture na abrazijsku otpornost hrasta kitnjaka (Quercus petraea)." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. https://urn.nsk.hr/urn:nbn:hr:235:551717

Bratić, Lucia. "Utjecaj veličine abrazivnog zrna i usmjerenosti strukture na abrazijsku otpornost hrasta kitnjaka (Quercus petraea)." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. https://urn.nsk.hr/urn:nbn:hr:235:551717

Bratić, L. (2023). 'Utjecaj veličine abrazivnog zrna i usmjerenosti strukture na abrazijsku otpornost hrasta kitnjaka (Quercus petraea)', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:551717

Bratić L. Utjecaj veličine abrazivnog zrna i usmjerenosti strukture na abrazijsku otpornost hrasta kitnjaka (Quercus petraea) [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2023 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:235:551717

L. Bratić, "Utjecaj veličine abrazivnog zrna i usmjerenosti strukture na abrazijsku otpornost hrasta kitnjaka (Quercus petraea)", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:235:551717

Metadata
TitleUtjecaj veličine abrazivnog zrna i usmjerenosti strukture na abrazijsku otpornost hrasta kitnjaka (Quercus petraea)
Title (english)Effect of abrasive grain size and structural direction on the abrasion resistance of the sessile oak (Quercus petraea)
AuthorLucia Bratić
MentorVera Rede (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2023-03-30, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Cilj ovog diplomskog rada bio je utvrditi kako usmjerenost strukture i veličina abrazivnog zrna utječu na abrazijsku otpornost hrasta kitnjaka (Quercus petraea) u tri karakteristična presjeka – poprečnom, radijalnom i tangencijalnom. Ispitivanje abrazijske otpornosti provedeno je na uređaju Taber abrader na različitim kvalitetama brusnog papira od P80 do P800. Na karakterističnim presjecima izmjerena je i tvrdoća Brinellovom metodom. Analizom dobivenih rezultata utvrđeno je da usmjerenost strukture i veličina abrazivnog zrna utječu na abrazijsku otpornost hrasta kitnjaka. Najveća abrazijska otpornost izmjerena je na poprečnom presjeku, dok je abrazijska otpornost radijalnog i tangencijalnog presjeka podjednaka. Na sva tri presjeka uočen je efekt „kritične veličine abrazivnog zrna“ i njezina vrijednost iznosi oko 125 μm. Najviša prosječna tvrdoća izmjerena je na poprečnom presjeku (16,19 HB), a niže vrijednosti prosječne tvrdoće izmjerene su na radijalnom (14,15 HB) i tangencijalnom presjeku (15,14 HB).
Abstract (english)
This thesis aimed to determine how the orientation of the structure and size of the abrasive grain affect the abrasion resistance of sessile oak (Quercus petraea) in three characteristic sections - cross, radial, and tangential. The abrasion resistance test was carried out using a Taber abrader device with different grades of abrasive papers from P80 to P800. The Brinell hardness was also measured in three characteristic sections. Analysis of the results showed that the orientation of the structure and size of the abrasive grain affect the abrasion resistance of sessile oak. The highest abrasion resistance was measured in the cross section, while the abrasion resistance of the radial and tangential sections was equal. The "critical size of the abrasive grain" effect was observed in all three characteristic sections, with a value of approximately 125 μm. The highest average Brinell hardness was measured in the cross section (16.19 HB), with lower average hardness values measured in the radial (14.15 HB) and tangential sections (15.14 HB).
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:551717
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
Terms of useLicence In copyright icon
Created on2023-03-29 08:19:26