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FME Transactions
2016, vol. 44, br. 4, str. 353-357
jezik rada: engleski
vrsta rada: neklasifikovan
objavljeno: 31/03/2017
doi: 10.5937/fmet1604353S
Creative Commons License 4.0
Upoređivanje efekta predopterećenja i zakrivljenosti kompozitnih laminata pod uticajem udara
aAmirkabir University of Technology, Faculty of Polymer Engineering, Iran
bUniversity of Bologna, Faculty of Industerial Engineering, Italy

e-adresa: tommasomaria.brugo@unibo.it

Sažetak

U ovom radu je razmatran efekat prednaprezanja pri udaru na kompozitne laminate. U tom cilju, tri uzorka su proizvedena i ispitana pod 4 različita uslova udara: 1- zakrivljen laminat bez prednaprezanja. 2- prednapregnut zakrivljen laminat, pokazujući niži poluprečnik zakrivljenosti zbog prednaprezanja. 3- zakrivljen laminat bez prednaprezanja, ali sa početnim smanjenjem zakrivljenosti. Posebni uslovi testiranja koji su proučavani omogućili su procenu i otkrivanje efekata prednaprezanja i zakrivljenosti prilikom testiranja na udar. Rezultati pokazuju da prednaprezanje dovodi do povećane zakrivljenosti, nakon čega sledi da se maksimalna udarna snaga oštećenja značajno povećava. Poređenje reluztata udara drugog i trećeg uzorka pokazuju da u slučaju slične zakrivljenosti prednaprezanje dovodi do nižeg oštećenog područja. Ovi rezultati su od posebnog značaja za projektovanje zakrivljenih kompozitnih komponenata.

Ključne reči

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