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Filtering by: Advisor Kamke, Frederick A. Remove constraint Advisor: Kamke, Frederick A. Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • Non-Destructive Detection and Monitoring of Durability Issues in Wood Panels under Accelerated-Weathering

    Creator:
    Laleicke, Paul Frederik
    Abstract:
    Many wood composites are known to poorly resist the effects of moisture and temperature extremes over time. Degradation of adhesive bonds, irreversible thickness swell and dimensional instability result in a decrease of properties and a possible failure of the material. Accelerated weathering has become an essential tool for assessment of...
    Resource Type:
    Dissertation
    Full Text:
    Frederick A. Kamke Many wood composites are known to poorly resist the effects of moisture and

  • 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

  • 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

  • Bending property enhancement of wood strand composite using viscoelastic thermal compression

    Creator:
    Rathi, Vardan M.
    Abstract:
    The fundamental intent of the study was to develop an innovative wood-strand composite for use in structural applications. Plantation grown, low density, hybrid poplar was used in the study which was found to be appropriate for the underlying Viscoelastic Thermal Compression (VTC) process. Wood modified by this process has high...
    Resource Type:
    Masters Thesis
    Full Text:
    Strand Composite using Viscoelastic Thermal Compression. Abstract approved: Frederick A

  • 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:
    : Frederick A. Kamke The objective of this research project was to increase the density, strength

  • 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:
    approved: _____________________________________________________________________ Frederick A

  • Proof of Concept for a Three-Dimensional Molded Core Wood-Strand Sandwich Panel

    Creator:
    Way, Daniel
    Abstract:
    Sandwich composites are typically produced from two high strength facings bonded to a lower strength, lightweight core. Sandwich design has proven to be efficient for applications demanding high strength and low weight. Wood-based sandwich composites have been largely limited to non-structural applications with the exception of structural insulated panels and...
    Resource Type:
    Masters Thesis
    Full Text:
    -Dimensional Molded Core Wood-Strand Sandwich Panel Abstract approved: Arijit Sinha Frederick A. Kamke

  • Copper compounds for durable composites : effects on material properties

    Creator:
    Vidrine, Cheney L.
    Abstract:
    The effects of incorporation of selected biocides on physical and mechanical properties of aspen strandboard were assessed using five copper-based preservatives or zinc borate at three retention levels. Tebuconazole or 4,5-dichloro-2-N-octyl-4-isothiazolin-3-one (DCOI) were added as co-biocides to selective copper-based treatments. Mold box tests showed that only panels treated with DCOI...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Jeffery J. Morrell Frederick A. Kamke The effects of incorporation of selected biocides

  • 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:
    . Abstract approved: ______________________________________________________ Frederick A. Kamke As the

  • 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:
    : _____________________________________________________________________ Frederick A. Kamke The tendency of wood to shrink and swell with changing moisture