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undergraduate thesis
Utjecaj orijentacije drvnih vlakanaca na abrazijsku otpornost drva
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. urn:nbn:hr:235:612771
Oreški, Ivan
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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Oreški, I. (2021). Utjecaj orijentacije drvnih vlakanaca na abrazijsku otpornost drva (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:612771

Oreški, Ivan. "Utjecaj orijentacije drvnih vlakanaca na abrazijsku otpornost drva." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:612771

Oreški, Ivan. "Utjecaj orijentacije drvnih vlakanaca na abrazijsku otpornost drva." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:612771

Oreški, I. (2021). 'Utjecaj orijentacije drvnih vlakanaca na abrazijsku otpornost drva', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:612771

Oreški I. Utjecaj orijentacije drvnih vlakanaca na abrazijsku otpornost drva [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2021 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:235:612771

I. Oreški, "Utjecaj orijentacije drvnih vlakanaca na abrazijsku otpornost drva", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:235:612771

Metadata
TitleUtjecaj orijentacije drvnih vlakanaca na abrazijsku otpornost drva
Title (english)Influence of wood fibre orientation on abrasion resistance of wood
AuthorIvan Oreški
MentorVera Rede (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2021-02-25, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Osnovni cilj ovog rada bio je istražiti kako usmjerenost vlakanaca utječe na abrazijsku otpornost drva hrasta kitnjaka u smjeru rasta drva i u obrnutom smjeru. U eksperimentalnom dijelu rada analizirana je mikrostruktura u tri karakteristična presjeka, izmjerena je gustoća i provedeno ispitivanje otpornosti na abrazijsku otpornost standardnom metodom „suhi pijesak – gumeni kotač“. Utvrđeno je da orijentacija vlakanaca ima veliki utjecaj na intenzitet abrazijskog trošenja u radijalnom i tangencijalnom presjeku. U oba presjeka trošenje je puno intenzivnije kada je smjer trošenja obrnut od smjera vlakanaca, osobito u radijalnom presjeku. Ukupni gubitak mase pri trošenju u oba smjera zajedno, malo je veći u tangencijalnom nego u radijalnom presjeku. Udaljenost od srčike prema kori debla nema veliki utjecaj na intenzitet trošenja. Povećanjem udaljenosti od podnožja debla gubitak mase pri abraziji pokazuje tendenciju rasta. Srednja vrijednost gustoće uzoraka na kojima je ispitana otpornost na abrazijsko trošenje iznosila je 0,984 g/cm3.
Abstract (english)
Main goal of this work was to investigate how the orientation of the fibers affects the abrasion resistance of sessile oak wood in direction of wood growth and inversely. In the experimental part of this work, the microstructure in three characteristic cross - sections was analyzed, the density was measured and the abrasion resistance test was performed by the standard method "dry sand - rubber wheel".It was found that the orientation of the fibers has a great influence on the intensity of abrasion wear in radial and tangential cross section. In both sections the wear is much more intense when the direction of wear is reversed from the direction of the fibers, especially in the radial section. The total weight loss in both directions was slightly higher in tangential than in radial cross section. Distance from the heart to the bark of the trunk doesn't have a great influence on the intensity of wear. As the distance from the base of the trunk increases, the loss of weight during abrasion grows. Mean density of the samples on which the abrasion resistance was tested was 0.984 g/cm3. .
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:612771
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
Terms of useLicence In copyright icon
Created on2021-02-19 17:02:28