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Nanoindentation Of Layered Materials With A Nonhomogeneous Interface, Praveen K. Chalasani
Nanoindentation Of Layered Materials With A Nonhomogeneous Interface, Praveen K. Chalasani
USF Tampa Graduate Theses and Dissertations
Indentation is used as a technique for mechanical characterization of materials for a long time. In the last few decades, new techniques of mechanical characterization at micro and nano level using indentation have been developed. Mechanical character-ization of thin films has become an important area of research because of their crucial role in modern technological applications. Theoretical and computational models of indentation are less time consuming,cost effective, and flexible. Many researchers have investigated mechanical properties of thin films using theoretical and computational models. In this study, an indentation model for a thin layer-substrate geometry with the possibility of nonhomogeneous or …
Synthesis, Processing And Characterization Of Nanocrystalline Titanium Dioxide, Shipeng Qiu
Synthesis, Processing And Characterization Of Nanocrystalline Titanium Dioxide, Shipeng Qiu
Electronic Theses and Dissertations
Titanium dioxide (TiO2), one of the basic ceramic materials, has found a variety of applications in industry and in our daily life. It has been shown that particle size reduction in this system, especially to nano regime, has the great potential to offer remarkable improvement in physical, mechanical, optical, biological and electrical properties. This thesis reports on the synthesis and characterization of the nanocrystalline TiO2 ceramic in details. The study selected a simple sol-gel synthesis process, which can be easily controlled and reproduced. Titanium tetraisopropoxide, isopropanol and deionized water were used as starting materials. By careful control of relative proportion …
Structural Testing And Analysis Of Hybrid Composite/Metal Joints For High-Speed Marine Structures, Jean Paul Kabche
Structural Testing And Analysis Of Hybrid Composite/Metal Joints For High-Speed Marine Structures, Jean Paul Kabche
Electronic Theses and Dissertations
The implementation of composite materials in engineering applications has observed a rapid increase over the last few decades. The U.S. Navy currently has an objective to enhance its future naval capabilities by developing hull-forms with advanced materials, including composites. Speed can be increased by reduction in weight and by incorporating innovative shaping of the hull-form, which can potentially be achieved with composites. Any naval vessel using composite materials for structural components will require hybrid connections of some sort, where composite sections are joined to metallic sub-structures. Joints are critical regions in the design of hybrid systems, as failures typically occur …