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Filtering by: Subject Laminated wood -- Mechanical properties Remove constraint Subject: Laminated wood -- Mechanical properties Degree Field Wood Science Remove constraint Degree Field: Wood Science

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  • Behavior of Cross-Laminated Timber Diaphragm Panel-to-Panel Connections with Self-Tapping Screws

    Creator:
    Sullivan, Kyle
    Abstract:
    The goal of this project is to contribute to the development of design values for cross-laminated timber (CLT) diaphragms in the seismic load-resisting system for buildings. Monotonic and cyclic tests to determine strength and stiffness characteristics of 2.44 m (8 ft) long shear connections with common self-tapping screws were performed....
    Resource Type:
    Masters Thesis
    Full Text:
    Wood Science presented on January 6, 2017. Title: Behavior of Cross-Laminated Timber Diaphragm

  • Characterization of load transfer in wood-based composites

    Creator:
    Schwarzkopf, Matthew John
    Abstract:
    The mechanical performance of composite materials is determined by the mechanical properties of their individual components and the effective load transfer between these components. Binders are commonly used to bond composite components together and to provide effective load transfer between them. In wood-based composites the binder-component load transfer occurs at...
    Resource Type:
    Dissertation
    Full Text:
    for Multi-Scale/Multi-Modal Investigation of Micro- Mechanical Wood-Adhesive Interaction

  • 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:
    . The wood is used as both filler and for property improvement. The first use of wood combined with

  • 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:
    mechanical properties of the wood may be modified, such as strength and stiffness. Densification of the

  • Numerical modeling and experiments on wood-strand composites

    Creator:
    Le, Edward A.
    Abstract:
    In wood-based composites, the glue-line (interface) between wood-strands affects the stress transfer from one member to the next. The glue-line properties determine the rate of load transfer between phases and these properties depend on wood species, surface preparation, glue properties, glue penetration into wood cells, and moisture content of the...
    Resource Type:
    Dissertation

  • Development and characterization of new formaldehyde-free soy flour-based adhesives for making interior plywood

    Creator:
    Huang, Jian
    Abstract:
    Formaldehyde-based adhesives such as urea-formaldehyde (UF) and phenol-formaldehyde (PF) adhesives dominate the current wood adhesive market. However, these adhesives are derived from petrochemicals and carcinogenic formaldehyde. In this study, we developed two formaldehyde-free adhesives based on abundant, renewable, and inexpensive soy flour (SF). The first adhesive was mainly composed of...
    Resource Type:
    Masters Thesis
    Full Text:
    the physical, mechanical and chemical properties of wood composites. Wood adhesives can be roughly

  • Chemical modification of wood : dimensional stabilization of viscoelastic thermal compressed wood

    Creator:
    Gabrielli, Christopher P.
    Abstract:
    The tendency of wood to shrink and swell with changing moisture content remains as one of the most significant challenges to using wood in its many applications. Viscoelastic Thermal Compression (VTC) has been shown to significantly increase the density, strength and stiffness of wood. However, dimensional stability is still a...
    Resource Type:
    Masters Thesis
    Full Text:
    dynamic heat, steam, and mechanical compression treatment to densify wood. This process takes advantage

  • 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:
    , wood flour, and a small amount of process- and property-enhancing additives; they are principally

  • Investigation of Styrene-Free Unsaturated Polyester Resins for Fiber-Reinforced Composites

    Creator:
    Wu, Yili
    Abstract:
    Most of existing commercial unsaturated polyester (UPE) resins are typically composed of a UPE and a high amount of highly volatile, flammable, and toxic styrene. The emission of hazardous styrene in the handling of the UPE resins and the preparation and use of fiber-reinforced UPE composites poses severe hazards to...
    Resource Type:
    Dissertation
    Full Text:
    Wu for the degree of Doctor of Philosophy in Wood Science and Chemical Engineering presented on

  • Modeling changes in flexural properties of softwood beams during fungal decomposition

    Creator:
    Mitsuhashi Gonzalez, June M.
    Abstract:
    Moisture intrusion in residential structures can lead to substantial fungal decay and this damage costs billions in repair/replacement costs. The extent of damage and the rate at which it occurs are primarily dependent on the wood moisture content and temperature in the structure. Determining the risk of decay for various...
    Resource Type:
    Dissertation
    Full Text:
    evidence showing that fungi cause dramatic losses in the mechanical and flexural properties of wood at