Vpliv orientacije na viskoelastične lastnosti kompozita iz ogljikovih vlaken

Kavčič, Filip (author), Grum, Janez (mentor)

Polimerni kompozitni materiali so eni izmed najbolj razširjenih materialov v industriji in v splošni uporabi. V sklopu zaključne naloge bomo merili vpliv različnih tehnoloških postopkov izdelave in orientacije vlaken na splošne mehanske lastnosti materiala ter njihov vpliv na viskoelastične lastnosti smole. Šest različnih polimernih kompozitnih vzorcev ojačanih z ogljikovimi vlakni bomo preizkušali na štiri-točkovnem upogibnem testu. Trije vzorci so bili izdelani po postopku ročne mokre lamincaije z vakuumeranjem ter z [0°]8, [(45°/0°)2]s in [±45°]8 orientacijo vlaken. Drugi trije vzorci pa so bili izdelani po postopku avtoklave s pred-impregniranimi vlakni z isto orientacijo vlaken. Rezultati, pridobljeni z eksperimentalnimi meritvami kažejo, da imata tehnološki postopek izdelave in orientacija vlaken vpliv na mehanske in viskoelastične lastnosti materiala.

• Language: Slovenian
• Keywords: kompoziti, polimerni kompoziti, ogljikova vlakna, štiri-točkovni test, viskoelastičnost, lezenje
• Work type: Bachelor thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-92937
• Publication date in RUL: 11.07.2017

Secondary language

• Language: English
• Title: Effect of fibre orientation on the viscoelastic properties of carbon fibre composite

Abstract

Polymer composites are one of the most common materials in the use of industry and in everyday use. We measured influence of the orientation of the reinforcement in the composite made by two different technological methods of fabrication. In addition, how this effects viscoelastic behaviour of the material. Six different polymer composite samples reinforced by carbon fibres were studied in the four-point bend test. Three of the samples were made by the process of hand lay-up with vacuum bagging and the [0°]8, [(45°/0°)2]s and [±45°]8 orientation of the fibres. The other three samples were made by the autoclave method with pre-impregnated fibre with the same orientation of the fibres. The results have showed us that the technological methods of fabrication and the orientation of reinforcement have influenced on the mechanical properties of material as well as on viscoelastic behaviour of material.

• Keywords: composites, polymer composites, carbon fibres, four-point test, viscoelasticity, creep