Aluminum-aluminum bonded joint - experimental verification of properties
Lepený spoj hliník-hliník - experimentální ověření vlastností
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České vysoké učení technické v Praze
Czech Technical University in Prague
Czech Technical University in Prague
Date of defense
2026-02-09
Abstract
Lepené spoje se v současném stavebnictví používají stále častěji, zejména ve fasádních aplikacích. Diplomová práce se zaměřuje na experimentální ověření smykové pevnosti a stanovení lomové energie dvousložkového epoxidového adheziva Loctite® EA 9455 při použití adherendu z hliníkové slitiny AW 6063. Vyhodnocením smykových zkoušek byla získána pevnost spoje a počáteční modul pružnosti ve smyku. Tyto výsledky byly statisticky vyhodnoceny a porovnány s výsledky téhož adheziva aplikovaného ve spoji sklo-sklo (pro cínovou i vzdušnou stranu skla). Závislosti síly na deformaci, nezbytné pro výpočet lomové energie, byly experimentálně stanoveny podle zkušebních metod DCB (double cantilever beam) a WRT (wedge rupture test). Lomová energie byla stanovena pomocí metody CBBM (compliance based beam method), v práci označené jako metoda de Moura, a její modifikované varianty, označené jako metoda Chaves. Závislost lomové energie na vybraných veličinách byla analyzována prostřednictvím spojnic trendů včetně jejich matematického vyjádření. Získané hodnoty lomové energie byly využity k validaci numerického modelu.
Adhesive joints are increasingly used in present civil engineering, particularly in façade applications. The diploma thesis focuses on the experimental verification of shear strength and the determination of fracture energy of the two-component epoxy adhesive Loctite® EA 9455 using the aluminum alloy AW 6063 as the adherend. Based on the evaluation of shear tests, the shear strength of the joint and the initial shear modulus were obtained. These results were statistically evaluated and compared with those of the same adhesive applied in glass-glass joint (for both the tin and air side of the glass). Force-displacement relationships required for the calculating of fracture energy were experimentally determined using the DCB (double cantilever beam) a WRT (wedge rupture test) methods. The fracture energy was determined using the CBBM (compliance-based beam method), referred to in this thesis as the de Moura method, as well as its modified variant referred to as the Chaves method. The dependence of fracture energy on selected parameters was analysed using trend curves, including their mathematical expressions. The obtained fracture energy values were used to validate a numerical model.
Adhesive joints are increasingly used in present civil engineering, particularly in façade applications. The diploma thesis focuses on the experimental verification of shear strength and the determination of fracture energy of the two-component epoxy adhesive Loctite® EA 9455 using the aluminum alloy AW 6063 as the adherend. Based on the evaluation of shear tests, the shear strength of the joint and the initial shear modulus were obtained. These results were statistically evaluated and compared with those of the same adhesive applied in glass-glass joint (for both the tin and air side of the glass). Force-displacement relationships required for the calculating of fracture energy were experimentally determined using the DCB (double cantilever beam) a WRT (wedge rupture test) methods. The fracture energy was determined using the CBBM (compliance-based beam method), referred to in this thesis as the de Moura method, as well as its modified variant referred to as the Chaves method. The dependence of fracture energy on selected parameters was analysed using trend curves, including their mathematical expressions. The obtained fracture energy values were used to validate a numerical model.
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hliníková slitina, dvousložkové epoxidové lepidlo, počáteční modul pružnosti ve smyku, lomová energie, metody CBBM, double cantilever beam, wedge rupture test, aluminum alloy, two-component epoxy adhesive, initial shear modulus, energy release rate, CBBM methods, double cantilever beam, wedge rupture test
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Vysokoškolská závěrečná práce je dílo chráněné autorským zákonem. Je možné pořizovat z něj na své náklady a pro svoji osobní potřebu výpisy, opisy a rozmnoženiny. Jeho využití musí být v souladu s autorským zákonem v platném znění.
A university thesis is a work protected by the Copyright Act of the Czech Republic. Extracts, copies and transcripts of the thesis are allowed for personal use only and at one`s own expense. The use of thesis should be in compliance with the Copyright Act.
A university thesis is a work protected by the Copyright Act of the Czech Republic. Extracts, copies and transcripts of the thesis are allowed for personal use only and at one`s own expense. The use of thesis should be in compliance with the Copyright Act.