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Filtering by: Subject Laminated materials -- Mechanical properties Remove constraint Subject: Laminated materials -- Mechanical properties Decade 2000-2009 Remove constraint Decade: 2000-2009

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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

  • 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

  • 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

  • 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

  • Quantification of total and plastic 3D strain fields within micro-damaged polyurethane foam

    Creator:
    Sutton, Matthew T.
    Abstract:
    Local material damage that occurs within cellular solids, such as polymer foams and trabecular bone, and precedes local fractures of the cell struts or walls is called micro-damage. The accumulation of micro-damage within cellular solids is often undesirable, although it is thought to be vital to the development and health...
    Resource Type:
    Masters Thesis
    Full Text:
    foams). The mechanical behavior of cellular solids is complex and depends on both the bulk material

  • Copper compounds for durable composites : effects on material properties

    Creator:
    Vidrine, Cheney L.
    Abstract:
    The effects of incorporation of selected biocides on physical and mechanical properties of aspen strandboard were assessed using five copper-based preservatives or zinc borate at three retention levels. Tebuconazole or 4,5-dichloro-2-N-octyl-4-isothiazolin-3-one (DCOI) were added as co-biocides to selective copper-based treatments. Mold box tests showed that only panels treated with DCOI...
    Resource Type:
    Masters Thesis
    Full Text:
    : Copper Compounds for Durable Composites: Effects on Material Properties. Abstract approved

  • Morphological characterization of wood plastic composite (WPC) with advanced imaging tools : developing methodologies for reliable phase and internal damage characterization

    Creator:
    Wang, Yi
    Abstract:
    Wood plastic composites (WPCs) are composite materials made from thermoplastic polymers, wood flour, and a small amount of process- and property-enhancing additives; they are principally used in the automotive industry and as secondary building materials. Although the WPC market is expected to keep growing, it is still relatively small when...
    Resource Type:
    Masters Thesis
    Full Text:
    direct quantitative measurement of the micro-mechanical response of this heterogeneous material. The

  • Stiffness of Douglas-fir lumber : effects of wood properties and genetics

    Creator:
    Vikram, Vikas
    Abstract:
    Wood stiffness is one of the most important properties of lumber and veneer. We studied wood stiffness (modulus of elasticity, MOE), wood density, microfibril angle, and knots in a 25 year-old wind pollinated progeny test (50 families, ~ 373 trees) of coastal Douglas-fir to understand the potential for genetically improving...
    Resource Type:
    Masters Thesis
    Full Text:
    widely used to make structural lumber, plywood, laminated veneer lumber (LVL), poles, and pilings