Utjecaj udjela ugljičnih vlakana na mehanička svojstva kompozita s plastomernom matricom

undergraduate thesis

• Title (english): The effect of fiber content on mechanical properties of carbon fiber reinforced thermoplastic composites
• Author: Maja Kajinić
• Mentor: Tatjana Haramina (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2019-09-26, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

U radu su ispitana mehanička svojstva kompozita s plastomernom matricom od kopolimera etilena i metil metakrilatne kiseline ojačanog ugljičnim vlaknima. Izrađene su dvije kompozitne ploče, svaka s dva sloja jednoosno orijentiranih vlakana pri jednakim uvjetima proizvodnje. Ispitna tijela izrezana su paralelno, te su ispitana svojstva prividne smične međuslojne čvrstoće, savojnog modula elastičnosti i savojne čvrstoće. Dobivene vrijednosti ukazuju na ponovljivost kvalitete izrade ploče.
Svojstva ploče s dva sloja vlakana uspoređena su sa svojstvima ploče sa samo jednim slojem. Savojni modul je porastao za red veličine, a prividna smična međuslojna čvrstoća za 14,6 %. Zbog vrlo male krutosti ploče s jednim slojem vlakana, nije bilo moguće odrediti čvrstoću pri savojnom opterećenju.

Abstract (english)

The mechanical properties of a composite with a thermoplastic matrix made of copolymers of
ethylene and methyl methacrylic acid reinforced with carbon fibers were investigated. Two
composite sheets were made, each of them was reinforced with two layers of uniaxially
oriented fibers under the same manufacturing conditions. The values obtained indicate the
reproducibility of the sheet quality.
The properties of the sheet reinforced with the two layers were compared with those
uniaxially reinforced with a single layer. The flexural modulus increased by an order of
magnitude and the apparent shear interlayer strength by 14,6 %. Due to the very low stiffness
of the single-layer sheet, it was not possible to determine its flexural strength
Key words: thermoplastic based composites, uniaxial reinforcement, apparent interlaminar
strength, flexural modulus, flexural strength.

• Keywords: kompozit s plastomernom matricom; jednoosno ojačanje prividna smična međuslojna čvrstoća; savojni modul elastičnosti; savojna čvrstoća
• Keywords (english): thermoplastic based composites; uniaxial reinforcement; apparent interlaminar shear strength; flexural modulus; flexural strength
• Language: croatian
• URN:NBN: urn:nbn:hr:235:249224
• 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: 2019-09-22 22:48:48