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Filtering by: Subject Wood--Discoloration Remove constraint Subject: Wood--Discoloration Degree Level Doctoral Remove constraint Degree Level: Doctoral License All rights reserved Remove constraint License: All rights reserved

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  • 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

  • In-situ Surface Modification of Wood with Different Hot Press Platen Metallurgies

    Creator:
    Freitas, Shawn Robert
    Abstract:
    As the forest industry moves toward the use of younger trees and production of an increasing number of composite products improving durability has gained importance. Coatings are one of the most widely used methods for improving wood durability because they improve resistance to water penetration, and subsequent shrinking and swelling,...
    Resource Type:
    Dissertation
    Full Text:
    Shawn Robert Freitas for the degree of Doctor of Philosophy in Wood Science presented on December 7

  • Characterization of Fungal Communities in Selected Wood Species by Field Exposure Tests

    Creator:
    Torres-Andrade, Paola A.
    Abstract:
    Fungi are the primary biological agents of wood deterioration and cause major economic losses of wood products globally. Wood in outdoor applications tends to remain wet for extended time periods, making it susceptible to fungal attack. Understanding the factors involved in fungal colonization of wood is important for developing improved...
    Resource Type:
    Dissertation
    Full Text:
    Torres-Andrade for the degree of Doctor of Philosophy in Wood Science presented on December 5, 2017

  • 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:
    Characterization of Load Transfer in Wood-Based Composites

  • Computed tomography analysis of wood-adhesive bonds

    Creator:
    Modzel, Günter Georg Rolf
    Abstract:
    The importance of wood bonding increased in the last decades due to the increased usage of wood composites whose performance depends to a large extent on the adhesive penetration and subsequent bonding of the adherends. The presented research used XMT (x-ray microtomography) to perform a non-destructive, threedimensional analysis of the...
    Resource Type:
    Dissertation

  • Formaldehyde-free wood adhesives from soybean protein and lignin : development and characterization

    Creator:
    Liu, Yuan
    Abstract:
    Presently, the production of wood composites relies on the formaldehyde-based wood adhesives such as phenol-formaldehyde (PF) and urea-formaldehyde (UF). However, their dependence on exhaustible fossil fuels and the emission of carcinogenic formaldehyde prompt to develop an environmentally friendly adhesive from renewable natural resources. This work focuses on development and characterization...
    Resource Type:
    Dissertation
    Full Text:
    Doctor of Philosophy in Wood Science presented on August 30, 2005. Title: Formaldehyde-free Wood

  • Investigation of new compatibilizer systems for wood-polyethylene composites

    Creator:
    Geng, Yu
    Abstract:
    Wood-plastic composites (WPCs) are one of the fastest-growing sectors of the wood composites industry. However, the strengths of WPCs are typically low because of the poor interfacial adhesion between hydrophilic wood and hydrophobic thermoplastics. A compatibilizer that can form bridges between wood and plastics is required to give WPCs desirable...
    Resource Type:
    Dissertation
    Full Text:
    Doctor of Philosophy in Wood Science presented on June 8, 2005. Title: Investigation of New

  • Improved interfacial adhesion in wood-plastic composites : Development of new compatibilizers

    Creator:
    Zhang, Cheng
    Abstract:
    In wood-plastic composites (WPCs) a compatibilizer is often used to improve the interfacial adhesion between the hydrophilic wood filler and the hydrophobic plastic matrix. At present, while the basic concepts of compatibilization are understood, the optimized chemical structures of an effective compatibilizer, including the ideal structures of the wood-binding domain...
    Resource Type:
    Dissertation
    Full Text:
    of Doctor of Philosophy in Wood Science presented on June 1, 2005. Title: Improved Interfacial

  • Development of an Accelerated Method for Assessing Decay of Wood Plastic Composites (WPC's)

    Creator:
    Silva Guzman, Jose Antonio
    Abstract:
    This study examined the decay resistance of the pine and maple components of wood plastic composites (WPC' s) of varying thicknesses exposed on several culture media to wood decay fungi under laboratory conditions. The ability of malt agar extract (MEA), potato dextrose agar (PDA), amended basal salts, sawdust (maple and...
    Resource Type:
    Dissertation
    Full Text:
    for the degree of Doctor of Philosophy in Wood Science presented on December 15, 2003. Title

  • Wood properties and use of sensor technology to improve optimal bucking and value recovery of Douglas-fir

    Creator:
    Acuna, Mauricio A.
    Abstract:
    There are a number of wood properties which affect the quality of forest products such as lumber and pulp. Of these, wood density is considered by some to be the single most important physical characteristic because it is an excellent predictor of strength, stiffness, hardness, and paper-making capacities. Accurately assessing...
    Resource Type:
    Dissertation
    Full Text:
    Engineering presented on March 14, 2006. Title: Wood Properties and Use of Sensor Technology to Improve