prikaz prve stranice dokumenta Karakterizacija materijala pomoću akustičkih parametara
  Download
PDF 1.92 MB
undergraduate thesis
Karakterizacija materijala pomoću akustičkih parametara
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. urn:nbn:hr:235:484881
Novak, Regina
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

Novak, R. (2019). Karakterizacija materijala pomoću akustičkih parametara (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:484881

Novak, Regina. "Karakterizacija materijala pomoću akustičkih parametara." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:484881

Novak, Regina. "Karakterizacija materijala pomoću akustičkih parametara." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:484881

Novak, R. (2019). 'Karakterizacija materijala pomoću akustičkih parametara', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 25 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:484881

Novak R. Karakterizacija materijala pomoću akustičkih parametara [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2019 [cited 2024 November 25] Available at: https://urn.nsk.hr/urn:nbn:hr:235:484881

R. Novak, "Karakterizacija materijala pomoću akustičkih parametara", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:235:484881

Metadata
TitleKarakterizacija materijala pomoću akustičkih parametara
Title (english)Material characterizaton based on acoustic parameters
AuthorRegina Novak
MentorMorana Mihaljević (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2019-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Karakterizacija materijala primjenom ultrazvučne metode omogućuje utvrđivanje promjene akustičkih parametara s obzirom na propagaciju ultrazvučnih impulsa i interakciju na različitim mikrostrukturama. Brzina propagacije ultrazvučnog impulsa jedna je od relevantnih značajki za karakterizaciju materijala. Brzina ultrazvuka svojstvena je svakom materijalu te je određena vrstom i stanjem materijala. Polazeći od činjenice da je brzina ultrazvučnog vala različita kod uzoraka iste skupine, ali različitog kemijskog sastava, u radu je analizirana promjena ultrazvučne brzine u zavisnosti o udjelu kobalta na uzorcima nanostrukturiranih tvrdih metala. Na pripremljenim uzorcima primjenom metode preklapanja signala mjerena je brzina propagacije ultrazvučnog impulsa. S ciljem karakterizacije pripremljenih uzoraka nanostrukturiranih tvrdih metala, provedena je i frekvencijska analiza te su određeni karakteristični parametri u frekvencijskoj domeni.
Abstract (english)
Using ultrasound method for material characterization allows to determine the change of acoustic parameters considering the propagation of ultrasound impulses and interaction on different mictostructures. The ultrasound pulse propagation velocity is one of the most important features for material characterization. The ultrasound velocity is inherent to any material determined by the type and condition of the material. Starting from the fact that ultrasound wave velocity is different in samples of the same group but with different chemical composition, in this paper is shown the change of ultrasonic velocity depending on the content of cobalt on samples of nanostructured hard metals. The ultrasound pulse transmission rate was measured using a digital oscilloscope on the prepared samples with the pulse overlap method. With intent of characterization of prepared samples of nanostructured hard metals, frequency analysis was made, and certain characteristic parameters were chosen in frequency domain.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:484881
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 on2019-09-23 17:32:32