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  • The fracture toughness of medium density fiberboard and other fiber bridging composites

    Creator:
    Matsumoto, Noah T.
    Abstract:
    In many composites, fiber bridging develops as part of the fracture process. Fiber bridging invalidates many toughness evaluation methods such as the ASTM E399 and complicates the identification of crack length, which is a necessary parameter in energy methods. In order to measure the toughness of fiber bridging composites, an...
    Resource Type:
    Masters Thesis
    Full Text:
    experience, expertise and technical prowess in experimental testing and miscellaneous tasks. • Professor

  • Gas injection consolidation of miniature natural fiber beams

    Creator:
    Kim, Jae-Woo
    Abstract:
    The internal structure of natural fiber composites can be manipulated by controlling the spatial distribution of fiber orientation and internal chemical and thermodynamic conditions during their consolidation. Objects highly tailored to specific service demands may thereby be produced. Techniques to form miniature structural beams from oriented hemp and random wood...
    Resource Type:
    Dissertation
    Full Text:
    ). 17 2.4. FIBERS AND ADHESIVES THAT COULD BE USED FOR COMPOSITE MATERIALS Fibrous composite

  • Polyurethane impregnated Kevlar 29 fabric for coal transport railcars

    Creator:
    Sarangabany, Perumal
    Abstract:
    Stress analysis was performed to determine the maximum stress acting on a railcar coal support-bed, using COSMOS finite element and WFM micromechanics models. The fracture strength of polyurethane impregnated Kevlar 29 fabric, proposed for integration with the railcar structure, was determined experimentally by loading the impregnated coupons in a microcomputer...
    Resource Type:
    Masters Thesis
    Full Text:
    permission to use the MTS machine for fatigue testing. I like to thank Dr. Warnes and Dr. Kenney John for

  • Sealed consolidation of natural fiber composites with chemical reactant injection and removal

    Creator:
    Chowdhury, Mohammed Jahangir Alam
    Resource Type:
    Dissertation
    Full Text:
    approved: High performance composite materials may be formed from natural fiber networks by controlling

  • Design and testing of fabric composite heat pipes for space nuclear power applications

    Creator:
    Kiestler, William C.
    Abstract:
    Conventional stainless steel - water and ceramic fabric composite water heat pipes have been built and tested. The tests have been conducted to compare the performance characteristics between conventional and fabric composite heat pipe radiators for space nuclear power heat rejection systems. The fabric composite concept combines a strong ceramic...
    Resource Type:
    Masters Thesis
    Full Text:
    Design and testing of fabric composite heat pipes for

  • Orienting lignocellulosic fibers by means of a magnetic field

    Creator:
    Zauscher, Stefan
    Abstract:
    Controlling the orientation and spatial distribution of discontinuous fibers in composite materials enables product properties to be tailored to anticipated use. Electric fields are already (albeit rarely) used to affect alignment in lignocellulosic (LC) fiber composites. The use of magnetic fields has not, however, been suggested or explored; this is...
    Resource Type:
    Masters Thesis
    Full Text:
    orientation and spatial distribution of discontinuous fibers in composite materials enables product

  • An investigation of fabric composite heat pipe feasibility issues

    Creator:
    Marks, Timothy S.
    Abstract:
    The design of a fabric composite heat pipe has been completed. It is composed of two end caps, between which a fluid containment liner composed of metal foil and an outer structural layer composed of a ceramic fabric is stretched. The interior of the heat pipe is layered with a...
    Resource Type:
    Masters Thesis
    Full Text:
    An Investigation of Fabric Composite Heat Pipe Feasibility

  • Bonding kinetics of thermosetting adhesive systems used in composites

    Creator:
    Ren, Shan
    Abstract:
    Bonding kinetics of thermosetting adhesives plays an important role within wood based composites during hot pressing, and in determining appropriate processing schedules for the manufacture of composites. A dynamic method has been developed to offer a direct means for investigating physical transformations that occur during bond formation, and the influence...
    Resource Type:
    Masters Thesis

  • The effects of extractives and compatibilizers on the flexural properties of natural fiber-thermoplastic composites

    Creator:
    Saputra, Hartono A.
    Abstract:
    Natural fibers such as wood, flax, and hemp are frequently used as fillers in natural fiber-plastic composites (NFPCs). At present, wood fiber is the most commonly used filler in the production of wood-plastic composites (WPCs). The advantages of these fibers compared to conventional inorganic fibers such as glass fiber is...
    Resource Type:
    Masters Thesis
    Full Text:
    added into the mixing chamber and blended with the PP for 5 mm (199 °C, 100 RPM). The composite sample

  • Fiber-reinforced composite materials for coal transportation railcar bed

    Creator:
    Zhou, Junlin
    Abstract:
    The material properties of the candidate fiber-reinforced composite materials and different fabrication methods for fiber composites were discussed. The improvement of the hand lay-up process for polyurethane impregnated Kevlar was investigated. Testing samples for lab and prototype tests were fabricated by hand lay-up process. The study showed that fiber composites...
    Resource Type:
    Masters Thesis
    Full Text:
    Fiber-reinforced composite materials for coal transportation