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  • The photoelastic coating method applied to the stress analysis of wood

    Creator:
    Fritz, Dennis William
    Abstract:
    The merits of the photoelastic coating technique as applied to wood were evaluated. Comparative tests were made on 12 nominal two-by-four Douglas Fir boards. The object of these tests was to determine the limitations of this technique, such as accuracy and complexity of experimental procedure. Correlation of the experimental results...
    Resource Type:
    Masters Thesis
    Full Text:
    Tests 55 Special Apparatus 55 Use of Strain Gages on Wood 55 Testing Method 57 Photoelastic Coating

  • Model and procedure for determination of strength and stiffness of wood studs

    Creator:
    Fernandez, Virgilio Asuncion
    Abstract:
    Elasticity properties of wood studs are essential inputs for the structural analysis of wood-stud wall systems. A theoretical procedure was developed to determine the probability distributions for the deflection-load relations of stud samples. The procedure is based on the finite element analysis and a Monte- Carlo type simulation and accounts...
    Resource Type:
    Dissertation
    Full Text:
    AND PROCEDURE FOR DETERMINATION OF STRENGTH AND STIFFNESS OF WOOD $TUDS Abstract approved

  • Characterizing perpendicular-to-grain compression in wood construction applications

    Creator:
    Basta, Craig Thomas
    Abstract:
    Current compression perpendicular-to-grain (c-perp) design values for wood members are based on mean stress using the ASTM D143 specimen. Base design value, as determined from 0.04-in deformation in the ASTM specimen, is applied to all c-perp applications. While the standard ASTM test was presumably believed to adequately reflect relevant c-perp...
    Resource Type:
    Masters Thesis

  • Effective Bonding Parameters for Hybrid Cross-Laminated Timber (CLT)

    Creator:
    Larkin, Blake
    Abstract:
    Cross-laminated timber (CLT) is a massive engineered wood product made of orthogonally bonded layers of solid-sawn lumber, and is intended for roof, floor, or wall applications. Although it was developed in Europe in the early 90s, CLT is relatively new to North America. CLT products must be certified for structural...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Lech Muszynski Cross-laminated timber (CLT) is a massive engineered wood product made of

  • The phytosanitation of solid wood packaging materials using wood preservatives

    Creator:
    Schauwecker, Christoph F.
    Abstract:
    New species introductions have been associated with the movement of people for thousands of years. For instance, horses were introduced into North America by Spanish explorers, while pigs were introduced by the Polynesians into many Pacific islands long before the establishment of permanent European settlements. Both of these species introductions...
    Resource Type:
    Masters Thesis
    Full Text:
    . Sterilizing the wood prior to treating was necessary to prevent the final product from deteriorating at the

  • Multi-scale Investigation of Adhesive Bond Durability

    Creator:
    McKinley, Paige Elizabeth
    Abstract:
    Moisture durability is essential for wood composites, especially those used in building construction, where products are prone to weathering. The primary focus of this research was to determine if adhesive penetration into the cell wall has a positive influence on adhesive bond durability. To fully understand the measureable effects of...
    Resource Type:
    Masters Thesis
    Full Text:
    ABSTRACT OF THE THESIS OF Paige Elizabeth McKinley for the degree of Master of Science in Wood Science

  • Performance Based Tests on Cross Laminated Timber - Concrete Composite Floor Panels

    Creator:
    Blank, Curtis
    Abstract:
    This project determines the short term and long term effective stiffness values for Cross Laminated Timber (CLT) with a reinforced concrete topping. The reinforced concrete was attached to the CLT panels with interface connections, and different types of interface connections were tested. Throughout this project, there are 31 tests with...
    Resource Type:
    Masters Thesis
    Full Text:
    were obtained from testing results. Lastly, the floor panels were tested to failure under weak- axis

  • Evaluation of new formaldehyde-free, soy flour-based wood adhesives for making particleboard

    Creator:
    Gu, Kai
    Abstract:
    Formaldehyde-based adhesives such as urea-formaldehyde (UF), phenol-formaldehyde (PF) are widely applied in wood-based composite industry. However, these adhesives are all petrochemical-based and could not sustain in a long term due to a limited reserve of oil and natural gas. Moreover, these adhesives emit carcinogenic formaldehyde in the production or use...
    Resource Type:
    Masters Thesis
    Full Text:
    panel product made by bonding wood veneers together under heat and pressure. For overcoming the

  • A new method of making particleboard with a formaldehyde-free soy-based adhesive

    Creator:
    Prasittisopin, Lapyote
    Abstract:
    Particleboard is widely used for making bookshelf, furniture, cabinets and many other interior products. At present, particleboard is mainly produced with wood particles and urea-formaldehyde (UF) resins. The emission of carcinogenic formaldehyde in the production and use of particleboard has generated an urgent need for development of a formaldehyde-free wood...
    Resource Type:
    Masters Thesis
    Full Text:
    other interior products. At present, particleboard is mainly produced with wood particles and urea

  • Wood-adhesive bondline analyses with micro x-ray computed tomography

    Creator:
    Paris, Jesse Loren
    Abstract:
    There is no doubt that adhesive penetration plays an important role in wood bondline joint performance and durability; yet, to date there is no direct experimental evidence linking penetration depth with bond performance. This is, in part, because adhesive penetration is commonly assessed with various 2D microscopy techniques that are...
    Resource Type:
    Dissertation