Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"epoxy-adhesive"”.
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Durability and Adhesion of a Model Epoxy Adhesive Bonded to Modified Silicon Substrates
The adhesion and durability of model epoxy/silane/SiO2/Si bonded systems were investigated under various conditions, including the type of surface preparation, pH of the environmental media, temperature, cyclic thermal stress, and external applied stress. The fundamental debond mechanism was …
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Factors affecting the fracture energy of a structural adhesive
… investigation was conducted on a modified epoxy adhesive (Metlbond 1113-2). Initially various adhesive fracture strength and energy tests and the mechanisms of mechanical and chemical adhesion were discussed. A critical study was then made of the sensitivity of the strain energy release …
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Adhesively bonded systems subjected to substitute ocean water
… problem. This work focused on the behavior of adhesively bonded systems subjected to substitute ocean water (SOW). The systems were combinations of two types of stainless steel; 310S and 316, two types of polymeric composites; carbon-fiber reinforced bismaleimide (CBMI) and Kevlar-fiber …
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The nonlinear viscoelastic behavior of adhesives and chopped fiber composites
… molding compound (SMC-25) and of a modified epoxy adhesive (Metlbond 1113-2) as determined by creep and creep recovery tests is presented. A nonlinear viscoelastic characterization method of Schapery is presented and applied to the data for both materials. The nonlinear constitutive equation …
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Investigation of strength of a hybrid adhesive anchor system used in precast concrete welded repair applications subjected to tensile and eccentric shear loading
… or misplaced connection plates is the use of an adhesive anchor system to fasten repair plates to precast members. Typically, the repair plate will experience elevated temperatures during the welding of the loose erection plate to the repair plate. Limited testing and theoretical data are …
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An Experimental Investigation of GLARE and Restructured Fiber Metal Laminates
… a group of materials fabricated by bonding glass/epoxy layers within metal layers. This class of materials can provide good mechanical properties, as well as weight savings. An FML known as Glass Laminate Aluminum Reinforced Epoxy (GLARE) was studied. An experimental investigation comprising of …
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Durability of sheet molding compound/metal adhesive bonds
… of a variety of sheet molding compounds (SMC)/ adhesive /metal systems involving steel, aluminum, phase α-SMC, Budd SMC, and polyurea adherends and polyurethane and epoxy adhesives has been investigated. Three specimen geometries with different modes of stress were employed: lap shear, wedge, …
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Experimental Strength Characterization of Epoxy Double Lap Joint for Carbon-Fiber Reinforced Polymer Tube
… focuses on predicting the critical load of an epoxy adhesive double lap joint through experimentation. Test samples were designed and fabricated from off-the-shelf spindle-wound tubes and machined forged carbon fiber. An assembly of aluminum parts was designed and fabricated to hold the samples …
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Effects of Surface Condition on the Fatigue Behavior of CFRP-to-Steel Joints
… fatigue performance between the steel substrate, adhesive layer and the CFRP laminate. In this research, double-strap joints (DSJ) were fabricated consisting of two high-modulus CFRP laminates and ASTM A36 steel plates bonded using a two-part epoxy adhesive. Two types of steel surface conditions …
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Self-healing of high temperature cured epoxy and composites
… fiber-reinforced polymeric composites and epoxy adhesives in aircraft, ships, vehicles, and wind turbine blades has increased markedly in the past decades. However, the polymeric matrix in these composites and adhesives typically consists of a brittle thermoset, which results in poor …
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Durability of Adhesive Joints Subjected to Environemntal Stress
… can degrade the mechanical properties of the adhesive, as well as the integrity of an adhesive interface with a substrate. Therefore such disruptions can significantly reduce the lifetime and durability of an adhesive joint.1-4 In this research, the durability of certain epoxy adhesive joints …
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The development of poly(vinylidene fluoride) piezoelectric sensors for measuring peel stresses in adhesive joints
… responsible for the failure of most laboratory adhesive joint geometries, the measurement of these stresses has been accomplished only through the use of very sophisticated optical techniques. In order to develop a more versatile measurement technique, poly(vinylidene fluoride) film was used to …
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Epoxy-clay nanocomposite for carbon fiber reinforced polymer applications
… using externally bonded CFRP laminates, creep of epoxy adhesive at the CFRP interface can result in off-loading of the CFRP and inefficient structural strengthening. When the CFRP strengthened structure is subjected to sustained loads, creep of epoxy should be carefully considered and controlled. …
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Avaliação da influência da espessura de adesivos estruturais em juntas metálicas com diferentes preparações superficiais
Structural adhesives have the ability to bond materials for a long time, withstand great stresses and offer advantages over the most common joining methods, such as welding and riveting, providing adhesive joints with excellent fatigue resistance. These adhesives are found in industries with more …
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Plasmonic Optical Sensors: Performance Analysis and Engineering Towards Biosensing
… onto endfaces of optical fibers using an epoxy adhesive. Patterned metal structures are generally extended from nanohole arrays to nanoslit arrays. A special plasmonic fiber is designed to simultaneously implement multimode refractive index sensing with remarkably narrow linewidth and high …
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Water based adhesive primers on aluminum substrates
The use of water based adhesive primers in enhancing the durability of aluminum adhesively bonded with epoxy was studied. The effects of the thickness of both the aluminum oxide surface layer and the primer layer on bond durability were established. 5052 aluminum alloy was oxidized by phosphoric …
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Experimental and Numerical Investigations on the Durability and Fracture Mechanics of the Bonded Systems for Microelectronics Application
Water-assisted crack growth at an epoxy/glass interface was measured as a function of applied strain energy release rate, G, and temperature using a wedge test geometry. The specimens consist of two glass plates bonded with a thin layer of proprietary epoxy adhesive. The crack fronts along the …
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Novel, low-cost, CFRP pressure vessel design for hydrogen fuel cell applications
… (PVC) end caps bonded onto either end with an adhesive. The inside wall of the CFRP tube was coated with a thin rubber liner to prevent leakage through the tube wall of the pressurised air-water mixture that provided the necessary thrust for the rocket. The outcome was that the CFRP pressure …
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SIGNIFICANCE OF U-WRAP FRP SHEAR STRENGTHENING ON FLEXURAL BEHAVIOR OF RC BEAMS STRENGTHENED USING NEAR SURFACE MOUNTED FRP BARS
… strongly dependent on bond performance between adhesive-concrete and adhesive-FRP interface. Although a full development length is provided for the NSM FRP bar, rupture of the FRP bar is highly unlikely. This is attributed to the fact that the NSM FRP bar typically observes a stress level lower …
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Grenzflächenuntersuchungen an geklebten Fügeteilen und Entwicklung von Methoden zur Verbesserung der Klebfestigkeit
Neuere Erzeugnisse zeichnen sich häufig durch eine Werkstoffvielfalt aus. Teilweise sind die Werkstoffe thermisch empfindlich. Aus allen diesen Gründen wird das weitgehend werkstoffunspezifische und wärmearme Verfahren Kleben für das Fügen von Bauteilstrukturen immer wichtiger. Es ist seit langem …
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