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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

  • 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

  • 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

  • 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

  • Using Acoustic Measurements and Inventory Data to Estimate Stiffness in Standing Douglas-Fir Trees

    Creator:
    Delgado Trejo, Jorge Luis
    Abstract:
    Total US lumber production in 2011 was 77.9 million cubic meters. Its primary use was for housing and construction. There is a growing concern that the structural properties for wood are being reduced as trees are harvested at much younger ages as the wood supply shifts from older to younger...
    Resource Type:
    Masters Thesis
    Full Text:
    variety of engineered wood products are being developed to meet these needs. This include laminated

  • The effect of elevated temperature on mechanical behavior of structural wood and wood-based composites

    Creator:
    Sinha, Arijit
    Abstract:
    Engineers, in practice, are often faced with the challenge of evaluating a fire-damaged structure and developing a rehabilitation and retrofit plan. In order to decide on a rehabilitation and retrofit plan, information on thermal degradation of building materials and connections are vital. A critical knowledge gap exists in terms of...
    Resource Type:
    Dissertation
    Full Text:
    10, 2010. Title: The Effect of Elevated Temperature on Mechanical Behavior of Structural Wood