Primjena metalno-plastičnih kompozita u željezničkoj industriji

master's thesis

• Title (english): Application of metal-plastic composites in the railway industry
• Author: Mario Kostanjevec
• Mentor: Petar Ilinčić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2024-05-15, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

Cilj diplomskog rada je ustanoviti vrijednost smične čvrstoće ljepljenog spoja polimera i metala u ovisnosti o temperaturi. Sklop ljepljenog spoja čini sendvič konstrukcija koja se sastoji od dvije metalne ploče između kojih se nalazi PET (poli (etilen – tereftalat)) ispuna. Ispitivanje se provodilo pri različitim temperaturama te se vidi da se s porastom temperature, smična čvrstoća snižava. Isto tako, ispitivanje se provodilo s različitim debljinama ispune te je zaključak da debljina ispune ne utječe na smičnu čvrstoću. U radu je prikazano kako ispitna tijela s dobrom pripremom površine imaju višestruko bolju čvrstoću spoja od ispitnih tijela s lošom pripremom površine i kao takva su ne upotrebljiva u eksploatacijskim uvjetima, odnosno važno je odrediti na koji način pripremiti površinu tih materijala za postizanje dobrog ljepljenog spoja.

Abstract (english)

The aim of the thesis is to determine the shear strength value of the adhesive bond between polymer and metal depending on the temperature. The adhesive joint assembly consists of a sandwich structure comprising two metal plates with a PET (poly(ethylene - terephthalate)) core. Testing was conducted at various temperatures, revealing that the shear strength decreases with increasing temperature. Similarly, tests were conducted with different core thicknesses, concluding that core thickness does not affect shear strength. The thesis demonstrates that test specimens with well-prepared surfaces exhibit significantly higher joint strength compared to those with poorly prepared surfaces, rendering them unsuitable for operational conditions. Therefore, it is crucial to determine the appropriate surface preparation methods for these materials to achieve a good adhesive bond.

• Keywords: Debljina ispune; ljepljeni spoj; metali; polimeri; priprema površine; sendvič konstrukcija; smična čvrstoća; temperatura.
• Keywords (english): Adhesive bond; fill thickness; metals; polymers; sandwich construction; shear strength; surface preparation; temperature.
• Language: croatian
• URN:NBN: urn:nbn:hr:235:196812
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2026-05-15
• Created on: 2024-05-09 10:54:38