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  • Failure analysis of pre-notched composite laminated plates under four-point bending conditions

    Creator:
    Arias Gonzales, Sergio
    Abstract:
    Ever since composite laminate technology was introduced into the aerospace and automotive industry, there has been a need to fully understand the damage progression experienced by composite laminated plates in the presence of a notch. While numerous research studies have been conducted on this matter when subjected to in-plane loads,...
    Resource Type:
    Dissertation
    Full Text:
    Sergio G. Arias for the degree of Doctor of Philosophy in Mechanical Engineering presented on February

  • Developing New Routes for Mechanical Characterization of Metal-Organic Frameworks

    Creator:
    Maack, Bryan A.
    Abstract:
    Metal-organic frameworks (MOFs) represent an exciting, new class of porous materials. Their hybrid organic-inorganic structure opens up near infinite possibilities to tune and design their structure for specific properties and applications. A new generation of flexible MOFs, following a generation of stiff MOFs, has created additional design space and complexity....
    Resource Type:
    Masters Thesis
    Full Text:
    microscopy (AFM), now possesses the ability to map the mechanical properties of a material surface. The

  • Cellulose nanocrystals filled carboxymethyl cellulose composites

    Creator:
    Choi, YongJae
    Abstract:
    Hydrogel polymers are a novel class of hydrophilic materials that have large application areas in both the industrial and medical fields. Carboxymethyl cellulose (CMC) has received attention as a hydrogel polymer. Methods to modify the mechanical properties of gels and films made from CMC are of interest in our lab...
    Resource Type:
    Masters Thesis

  • An experimental study on tensile properties of cellulose nanocrystal reinforced epoxy nanocomposite material

    Creator:
    Zeng, Jin
    Abstract:
    Epoxy resin is a thermosetting resin that is commonly used as composite matrix. Epoxy composite materials are well utilized in industries, such as aerospace, due to their good mechanical properties. Nano-scale filler reinforced polymer composite materials have been intensively researched in recent decades. Cellulose nanocrystals (CNXLs) are a type of...
    Resource Type:
    Masters Thesis
    Full Text:
    matrix to the fibers, therewith improves mechanical properties of a composite material. Nanofibers

  • Bioactive glass filled resin composites : mechanical properties and resistance to secondary tooth decay

    Creator:
    Khvostenko, Dmytro
    Abstract:
    Dental resin composites are widely used in modern dentistry due to their aesthetic appearance. However, resin based restorations have inferior mechanical properties (fracture is the second reason for restorations replacement) in comparison to alloy based composites and their antimicrobial properties still remain poor, leading to secondary tooth decay development on...
    Resource Type:
    Dissertation
    Full Text:
    . Title: Bioactive Glass Filled Resin Composites: Mechanical Properties and Resistance to Secondary

  • Heat treatment effects on CPM-M4 tool steel performance as edged blade material

    Creator:
    Lian, Sidi
    Abstract:
    CPM-M4 tool steel is a commonly used knife blade material due to its high strength and wear resistance. The goal of this thesis is to understand how heat treatment parameters affect blade performance and microstructure.Five heat treatments were applied to CPM-M4 steel by varying austenitizing and tempering temperatures. The microstructures...
    Resource Type:
    Masters Thesis

  • Mechanistic aspects of fracture and fatigue in resin based dental restorative composites

    Creator:
    Shah, Minalben B.
    Abstract:
    For resin based dental restorative composites, one of the major challenges is to optimize the balance between mechanical and optical properties. Although fracture is the second leading cause of dental restorative failures, very limited mechanistic understanding exists on a microscopic level. In the present study, the fracture properties and mechanisms...
    Resource Type:
    Dissertation
    Full Text:
    major challenges is to optimize the balance between mechanical and optical properties. Although

  • Improving wood strength and stiffness through viscoelastic thermal compression

    Creator:
    O'Connor, John P.
    Abstract:
    The objective of this research project was to increase the density, strength, and stiffness of two low to medium-density diffuse-porous hardwood species. Wood used in this study was processed using a method of wood densification known as “Viscoelastic Thermal Compression” (VTC). The VTC process is a three phase treatment which...
    Resource Type:
    Masters Thesis
    Full Text:
    ). The VTC process is a three phase treatment which incorporates saturated steam treatment, mechanical

  • Developing Design Model for Cellulose Nanocomposites

    Creator:
    Shir Mohammadi, Meisam
    Abstract:
    Today nano scale materials are being used for wide range of applications. One promising topic in nano scale materials is using them for reinforcement of different polymeric materials to reach desirable stiffness properties. The stiffness of these materials is mostly found experimentally because the nanocomposite community lacks a decent analytical...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 5.2.2 Nanocomposite Fabrication . . . . . . . . . . . . . . . . . . . . . 104 5.2.3 Mechanical

  • Interfacial shear strength of wood-plastic composites

    Creator:
    Rogers, James F.
    Abstract:
    This study examined the relationship of interfacial shear strength (IFSS) and bending strength (MOR) of several different wood-plastic composites (WPC's). Plastics utilized were high-density polyethylene (HDPE) and polypropylene (PP). Pine and oak were used as the wood species. Compatibilizers used included maleicanhydride polyethylene (MAPE), polymeric methylene diphenyl diisocyanate (PMDI), KymeneTM,...
    Resource Type:
    Masters Thesis
    Full Text:
    Polymers used in WPC's 7 1.3.3 WPC Formulation, Manufacture, and Use 7 1.3.4 Physical and Mechanical