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master's thesis
Akustična svojstva drva
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. urn:nbn:hr:235:483428
Katinić, Domagoj
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

Cite this document

Katinić, D. (2018). Akustična svojstva drva (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:483428

Katinić, Domagoj. "Akustična svojstva drva." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. https://urn.nsk.hr/urn:nbn:hr:235:483428

Katinić, Domagoj. "Akustična svojstva drva." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. https://urn.nsk.hr/urn:nbn:hr:235:483428

Katinić, D. (2018). 'Akustična svojstva drva', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:483428

Katinić D. Akustična svojstva drva [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2018 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:235:483428

D. Katinić, "Akustična svojstva drva", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:235:483428

Metadata
TitleAkustična svojstva drva
Title (english)Acoustic properties of wood
AuthorDomagoj Katinić
MentorVera Rede (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2018-12-06, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U radu je određena brzina širenja zvuka na dvije vrste drva – hrastu i brijestu. Brzina širenja zvuka je jedno od važnijih akustičnih svojstava drva i drugih tehničkih materijala, a ovisi o modulu elastičnosti i gustoći. S obzirom na usmjerenost građe i svojstava drva, sva ispitivanja su provedena u longitudinalnom smjeru, gdje je vrijednost modula elastičnosti najviša. Srednja vrijednost dinamičkog modula elastičnosti za hrast je 17,39 GPa, a za brijest je 10,05 GPa. Gustoća hrasta iznosi 0,759 g/cm3, a brijesta 0,532 g/cm3. Rasipanje rezultata za modul elastičnosti je veliko za obje vrste drva, pogotovo kod uzoraka hrasta. Vrijednost brzine širenja zvuka kod hrasta je za ≈ 10 % viša nego kod brijesta, iako je modul elastičnosti hrasta za 73 % viši od modula elastičnosti za brijest, a gustoća viša za 43 %.
Abstract (english)
In this study, sound velocity was determined between two types of wood – oak and elm. The sound velocity is one of the most important acoustic properties of wood and other technical materials, which is influenced by modulus of elasticity and also density. Depending on the orthotropic structure and properties of wood, all tests were conducted in longitudinal direction in which the modulus of elasticity has the highest value. The mean values of dynamic modulus of elasticity of oak and elm woods were 17,39 GPa and 10,05 GPa, respectively. Density of the oak was 0,759 g/cm3 and density of the elm was 0,532 g/cm3. Scattering of experimental data was large, especially for the oak. The sound velocity of the oak was calculated ≈ 10 % higher than that of the elm, although the modulus of elasticity of the oak were 73 % higher and the density was 43 % higher, in comparison with the elm.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:483428
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 on2019-05-22 23:32:05