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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 63 for “"adhesion strength"”.
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Adhesion Strength of Cordierite Bulk Coatings on Molybdenum Substrates
… and chromium. The development of a coating adhesion test methodology was required to choose between interface designs. An indentation method was chosen because of ease in testing and availability of fracture mechanics interpretations of test data. The interfacial fracture toughness was …
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Establishment of a repeatable test procedure for measuring adhesion strength of particulates in contact with surfaces
The firm adhesion of flavouring particles onto snack surfaces during coating processes is a major concern in the snack production industry. Detachment of flavouring powders from products during handling and production stages can lead to poor appearance and reduced taste of the product as well as …
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Optimized Surface Roughening by Pulsed Waterjet for Suitable Adhesion Strength of Plasma Transferred Wire Arc Coating
… profiles. The roughened surfaces increased the adhesion strength between the substrates and stainless-steel coating. Limitations exist, such that, if the roughness profile generated was copious the coating mirrored the roughened surface profile. Additionally, if the roughness profile was …
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The Adhesion Strength of a Plasma Sprayed Silicon Bond Coating on a Silicon Carbide Ceramic Matrix Composite
… is a vital step to ensure sufficient coating adhesion. The adhesion of a plasma sprayed coating to the underlying component is one of the most important properties as the component will not be protected if the coating is not well adhered. Surface roughening of metallic components via grit …
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Integrating Smart Materials and Adhesion Mechanics for Soft Gripping Mechanisms
… in a cylindrical PDMS pillar can enhance the dry adhesion strength of the pillar to an opposing rigid surface significantly. Here, I investigate three different approaches to enhance the dry adhesion of soft gripping mechanisms integrating smart materials and adhesion mechanics. First, the effect …
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Adhesion of Dental Ceramic to Ti6Al4V Alloy Fabricated by CAD/CAM Technologies // Адхезия на дентална керамика към сплав Ti6Al4V, произведена чрез CAD/CAM технологии
The thesis aims to investigate the properties and adhesion of dental ceramics to Ti6Al4V alloy produced by modern CAD/CAM technologies: milling and selective laser melting (SLM). Conventional and standard methods are used to investigate the geometric characteristics, density and hardness, …
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A study of shape memory polymers and their usage in the development of directional dry adhesives
… microstructuring enable highly reversible adhesion strength upon thermo-mechanical loading, and the tilted wedge geometry gives rise not only to its capability for varying adhesion strength based on loading direction, but also the reduction of strain energy input necessary to achieve …
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Mechanical Properties of Polymer Modified Mortar
… properties investigated were compression strength and adhesion strength. Compression strength effects did not have an impact on adhesion strength. Adhesion strength was calculated with pullout testing apparatus designed by the author. Results indicate that recycled ABS had a lower adhesive …
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MODELLING CELL POPULATION GROWTH
… and the intensity and distribution of focal adhesions over the cell membrane. To compute and study the mechanical properties of tissues during growth and confluency, a theoretical and computational framework, called CellSim3D, was developed in our group based on a three-dimensional kinetic …
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Autologous Fibrinogen Purification and Concentration For Use in Fibrin Sealant
… along with the fibrinogen. The tensile and adhesion strengths and kinetics of fibrin sealant prepared from protamine-fibrinogen concentrate were evaluated. Tensile strength and adhesion strength both increased with increasing fibrinogen concentration. Addition of calcium chloride …
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Interfacial Adhesion Evaulation of Uniaxial fiber-Reinforced-Polymer Composites by Vibration Damping of Cantilever Beam
… interface. Good interfacial bonding (or adhesion), to ensure load transfer from matrix to reinforcement, is a primary requirement for effective use of reinforcement properties. Thus, a fundamental understanding of interfacial properties and a quantitative characterization of interfacial …
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Electrostatic adhesion testing of metallizations on silicon substrates
… is developed to measure quantitatively the adhesion strength of metallizations deposited on substrates such as silicon. Electrostatic adhesion testing employs electrostatic forces to generate delaminating stresses in thin metallic films. The interfacial adhesion strength is readily …
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Blister Test for Measurements of Adhesion and Adhesion Degradation of Organic Polymers on AA2024-T3
… protective coatings applied to metals is adhesion. Surface preparation prior to coating application is known to be critical, but there is a lack of understanding of what controls adhesion. Numerous techniques have been developed in the last decades to measure the adhesion strength of …
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Interfacial adhesion of thin film high energy density anode materials
… little work has been done to study the interface strength of Ni/a-Si systems. Here, we investigate Ni/a-Si interfacial adhesion strength through the technique of laser spallation (LS) combined with finite element analysis (FEA). It was found that the Ni/a-Si interface can withstand at least ~250 …
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Hydrate-phobic surfaces
… An alternative approach involves reducing the adhesion of hydrates to surfaces, ideally to a low enough level that the force of flow detaches them and prevents plug formation. Systematic and quantitative studies of hydrate adhesion on smooth surfaces with varying energies were conducted. …
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Structure-Property Relationships and Adhesion in Polyimides of Varying Aliphatic Content
… to understand their molecular origins. The adhesion performance of a selected series of partially aliphatic polyimides to SiO2/Si was examined using a shaft loaded blister test, which was designed and instrumented for use in a dynamic mechanical analysis instrument. The adhesion was studied …
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Capillary densification and adhesion tuning of aligned carbon nanotube arrays for shape-engineerable architectures
… NF synthesis, densification, and substrate adhesion is needed. Here, parametric experiments and models are developed to evaluate the scaling of NF-substrate adhesion strength (Fa) of mm-scale tall aligned CNT arrays as a function of CNT growth time (tg), and to control the solvent-based …
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Characterization of mirco/nano mechanical and tribological properties of polymeric coatings deposited on steel
… the highest average critical load, at which the adhesion to the substrate steel failed, was 100.03 mN for the 2K coating, thus indicating that the 2K coating had the greater adhesion strength.</p>
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Experimental and computational studies of receptor-mediated cell detachment in shear flow
Specific, receptor-mediated adhesion of cells to ligand-coated surfaces in viscous shear flow is a central phenomenon in many physiological and biotechnological processes. Mechanical strength of specific adhesion is generally presumed to be related to chemical affinity of receptor/ligand bonds, but …
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A Mechanistic-Based Approach to Reduce Biological Adhesion
… benign coatings to reduce biological adhesion. Recent mechanistic insights suggest that the marine mussel, Mytilus edulis, adheres with proteins that undergo oxidative cross-linking. Our work has focused on taking a mechanistic approach to defeat adhesion with the incorporation of …
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