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  • Applications of Holographic Optical Tweezers: Multiplexed Fluorescence Spectroscopy and the Micromechanics of Type-I Collagen

    Creator:
    Cibula, Matthew A.
    Abstract:
    The development and some applications of holographic optical tweezers (HOT) are presented. Our HOT system uses a spatial light modulator (SLM) to control the location and properties of the optical trap. We have developed a method for optimizing the diffraction efficiency of a SLM that can be applied in situ...
    Resource Type:
    Dissertation
    Full Text:
    primary source of its mechanical properties. Collagen gels are often approximated as homogeneous elastic

  • 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:
    of Philosophy in Forest Products presented on August 22, 1994. Title: Dynamic Mechanical Analysis

  • The effects of growth rate and cambial age on wood properties of red alder (Alnus rubra Bong.) and Oregon white oak (Quercus garryana Dougl.)

    Creator:
    Lei, Hua
    Abstract:
    This study was to investigate effects of growth rate and cambial age on properties of wood from two increasingly used hardwood species, red alder (Alnus rubra Bong.) and Oregon white oak (Quercus garryana Dougl.), for better understanding factors affecting wood quality in hardwoods. Thirty 7-year-old trees grown at widely varying...
    Resource Type:
    Dissertation
    Full Text:
    Proportion of cell-types 10 Specific gravity 13 Mechanical properties 17 Juvenile Wood 17 Effect of Growth

  • Influence of silt size and content on static liquefaction potential of sand

    Creator:
    Monkul, M. Murat
    Abstract:
    Different specimen preparation methods such as moist tamping, dry funnel deposition, slurry deposition, dry air pluviation have been reported in the literature to investigate the undrained behavior of silty sands. Similarly, different means have been used to densify the soils prepared with such methods. However, the influence of the densification...
    Resource Type:
    Dissertation
    Full Text:
    deposited specimens. Densification of the specimens is performed via mechanical vibrator or soft

  • Bioactive glass filled resin composites : mechanical properties and resistance to secondary tooth decay

    Creator:
    Khvostenko, Dmytro
    Abstract:
    Dental resin composites are widely used in modern dentistry due to their aesthetic appearance. However, resin based restorations have inferior mechanical properties (fracture is the second reason for restorations replacement) in comparison to alloy based composites and their antimicrobial properties still remain poor, leading to secondary tooth decay development on...
    Resource Type:
    Dissertation
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    . Title: Bioactive Glass Filled Resin Composites: Mechanical Properties and Resistance to Secondary

  • 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:
    : ________________________________________________________________________ Lech Muszyński The mechanical performance of composite materials is determined by the

  • Leg spring model related to muscle activation, force, and kinematic patterns during endurance running to voluntary exhaustion

    Creator:
    Dutto, Darren John
    Resource Type:
    Dissertation
    Full Text:
    effect of physiological, neurological, and mechanical parameters. Finding factors from each system

  • Behavior of gypsum-sheathed cold-formed steel wall stud panels

    Creator:
    Lee, Young-ki
    Abstract:
    This study consists of three parts: 1) Part A: Limiting Height Evaluation for Composite Wall Tests, 2) Part B: Mid-Span Deflection Evaluation for Composite Wall Tests, and 3) Part C: Nominal Axial Strength Evaluation for Wall-Braced Wall Stud Columns. The purpose of Part A is to develop experimentally-based limiting heights...
    Resource Type:
    Dissertation
    Full Text:
    sheathing (flange). Mechanical fasteners are assumed evenly spaced and therefore provide uniform fastener

  • Developing Design Model for Cellulose Nanocomposites

    Creator:
    Shir Mohammadi, Meisam
    Abstract:
    Today nano scale materials are being used for wide range of applications. One promising topic in nano scale materials is using them for reinforcement of different polymeric materials to reach desirable stiffness properties. The stiffness of these materials is mostly found experimentally because the nanocomposite community lacks a decent analytical...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 5.2.2 Nanocomposite Fabrication . . . . . . . . . . . . . . . . . . . . . 104 5.2.3 Mechanical

  • 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:
    Doctor of Philosophy in Mechanical Engineering presented on June 1 1993. Title: Three-Dimensional