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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

  • Dynamic mechanical analysis of wood and wood-based composites

    Creator:
    Gao, Hong
    Abstract:
    Wood and wood-based composites are being used in either new or more demanding applications. A means is needed to successfully analyze new materials and to predict their long-term performance. Two techniques, dynamic mechanical analysis (DMA) and time-temperature superposition (TTS) offer a means to accomplish this objective. The outcome of this...
    Resource Type:
    Dissertation
    Full Text:
    Mechanical Analysis of Wood and Wood-based Composites by Hong Gao A THESIS submitted to Oregon State

  • The relation of encased knots, knot holes, and intergrown knots in Douglas fir dimension stock

    Creator:
    Wojcik, Walter
    Resource Type:
    Undergraduate Thesis
    Full Text:
    more from the appearance standpoint than from the strength qualities of the wood. If the public can be

  • Studies of polystyrene (PS) high density polyethylene (HDPE) and PS/HDPE/wood composites from an extrusion process : mechanical properties, rheological characterization and morphology

    Creator:
    Xu, Bin
    Abstract:
    The global motivation for this work comes from the desire to fabricate "plastic lumber" with improved mechanical properties (particularly creep resistance) from recycled plastics and wood composites. The present studies have utilized "virgin plastics" of polystyrene (PS), an amorphous, stiff material that exhibits brittle fracture, and high density polyethylene (HDPE),...
    Resource Type:
    Masters Thesis
    Full Text:
    ) and PS/HDPE/wood composites from an extrusion process : mechanical properties, rheological

  • 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

  • Three-dimensional, nonlinear viscoelastic analysis of laminated composites : a finite element approach

    Creator:
    Wang, Min
    Abstract:
    Polymeric composites exhibit time-dependent behavior, which raises a concern about their long term durability and leads to a viscoelastic study of these materials. Linear viscoelastic analysis has been found to be inadequate because many polymers exhibit nonlinear viscoelastic behavior. Classical laminate theory is commonly used in the study of laminated...
    Resource Type:
    Dissertation
    Full Text:
    laminated composites : a finite element approach AN ABSTRACT OF THE THESIS OF Min Wang for the degree of

  • Fracture properties of balsa wood and balsa core sandwich composites

    Creator:
    Shir Mohammadi, Meisam
    Abstract:
    Favorable properties of Balsa wood make it an interesting alternative in a number of applications including thermal insulation or as a lightweight core material in sandwich composites. Increasing use in construction necessitates a better understanding of its mechanical and failure properties. In the present work, mode I and mode II...
    Resource Type:
    Masters Thesis
    Full Text:
    wood for four different densities(Table 1). Furthermore, Dreisbach (1951), reported 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:
    . 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