Testing of Composite Panel on Bending to Determine Adhesive Properties of Panel Cover and Core

Autor:	Lukačević, Lazar
Přispěvatelé:	Krolo, Paulina, Čeh, Nina, Grandić, Davor
Jazyk:	chorvatština
Rok vydání:	2021
Předmět:	sandwich panels adhesion FEM numerical analysis experimental research 3D optical measurements failure modes composites sendvič paneli mehanizmi sloma prionjivost kompoziti FEM 3D optička mjerenja eksperimentalno istraživanje numerička analiza
Popis:	U ovom diplomskom radu dan je osnovni pregled teorije sendvič panela s naglaskom na ponašanje takvih konstrukcija i njihovu efikasnost. Analitička rješenja za normalna i posmična naprezanja te deformacije također su obrađena. Opisani su mehanizmi sloma, a jedan od njih je i glavni fokus rada. Cilj je eksperimentalno ispitati prionjivost između komponenti sendvič panela koji je izrađen od Fermacell Firepanel A1 gips-vlaknastih ploča i poliuretanske (PUR) pjene, koristeći Američku normu ASTM C393/C393M. Normom su pokrivena i nestandardna ispitivanja za uzorke posebnih dimenzija, a prionjivost se ispituje savijanjem uzorka u tri ili četiri točke. Za praćenje ispitivanja uz LVDT uređaje, primijenjena su i 3D optička mjerenja s dvije ARAMIS 12M kamere. Kako se za modeliranje sendvič panela uvelike koriste simulacije metodom konačnih elemenata, u radu je napravljena simulacija za jedan uzorak u dva slučaja, u programskom paketu Straus7, koja je uspoređena s rezultatima ispitivanja. This master thesis gives a basic overview of the theory of sandwich panels with an emphasis on the behavior and efficiency of such structures. Analytical solutions for normal and shear stresses and deformations are also given. The failure modes are described, and one of them is the main objective of the work. The aim is to experimentally test the adhesion between the components of a sandwich panel made of Fermacell Firepanel A1 gypsum fiberboard and polyurethane (PUR) foam, using the American standard ASTM C393 / C393M. The standard also covers non-standard tests for samples of special dimensions, and adhesion is tested by three- or four-point bending tests. Each test was monitored with LVDT devices and 3D optical measurements with two ARAMIS 12M cameras. As finite element simulations are widely used for modeling sandwich panels, the simulation for one sample in two cases is made with Straus7 FEA software and is compared with the test results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::91f89a57fe8109904eaadc2b348a91a3 https://urn.nsk.hr/urn:nbn:hr:157:720162 Zobrazit plný text záznamu