Analiza oštećenja lančanika motorne pile

undergraduate thesis

• Title (english): Chainsaw sprocket fracture analysis
• Author: Domagoj Brdovčak
• Mentor: Željko Alar (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2025-02-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Basic Technical Sciences; Materials

Abstract

Lančanik je jedan od osnovnih pogonskih dijelova motorne pile te je time izravno izložen utjecaju trošenja. Zbog različitih radnih uvjeta, ne postoji materijal koji je otporan na trošenje u svim situacijama, ali materijalu možemo različitim postupcima kaljenja, površinskog kaljenja i prevlačenja povisiti otpornost na trošenje.
U uvodnom dijelu rada su ukratko opisani dijelovi lančane motorne pile i njihove funkcije. Detaljnije je opisan lančanik, navedeni su zahtjevi koji se postavljaju na materijal lančanika te su opisani načini trošenja lančanika. Zatim su opisane faze istraživanja prijeloma i oštećenja te uloga fraktografije u istraživanju.
U drugom dijelu završnog rada provedene su analize, uključujući 3D skeniranje, usporedba trošenja, kemijsku analizu, mjerenje tvrdoće po Vickersu (HV) i ispitivanje mikrostrukture.

Abstract (english)

The sprocket is one of the primary drive components of a chainsaw and is therefore directly exposed to wear. Due to varying working conditions, no material is resistant to wear in all situations. Still, we can increase the material's wear resistance by various processes such as hardening, surface hardening, and coating.
The introductory part of this paper briefly describes the components of an 'endless chainsaw' and explains its functions. The sprocket is described in greater detail, including the requirements placed on the sprocket material and the types of wear the sprocket may experience. Furthermore, the stages of fracture and damage investigation are described, along with the role of fractography in the research.
In the second part of the paper, analyses were conducted, including 3D scanning, wear comparison, chemical analysis, Vickers hardness (HV) measurement, and microstructure examination.

• Keywords: lančanik; trošenje materijala; fraktografija; analiza rezultata; zahtjevi lančanika
• Keywords (english): sprocket; material wear; fractography; analysis of results; sprocket requirements
• Language: croatian
• URN:NBN: urn:nbn:hr:235:727653
• Study programme: Title: 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 resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-02-21 17:33:41