Index Catalog // ScholarsArchive@OSU

Creator:: Gallops, Sarah
Abstract:: Toughened ceramics, or bridging ceramics, are being developed in an attempt to widen the application base of traditional ceramics, which are brittle and have low resistance to crack extension. The crack growth resistance of these extrinsically toughened ceramics has been shown to increase with crack length, and unlike traditional ceramics,...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Sarah Gallops for the degree of Doctor of Philosophy in Material Science presented on July

Creator:: Patterson, Eric Andrew
Abstract:: Much recent research has focused on the development lead-free perovskite piezoelectrics as environmentally compatible alternatives to lead zirconate titanate (PZT). Two main categories of lead free perovskite piezoelectric ceramic systems were investigated as potential replacements to lead zirconate titanate (PZT) for actuator devices. First, solid solutions based on Li, Ta,...
Resource Type:: Dissertation
Full Text:: have been wonderful in making Corvallis feel like home. Sarah Gallops, thanks for the Southern Cookin

Creator:: Greene, Rawley Brandon
Abstract:: Because of its attractive material properties like high hardness, high toughness, and excellent high temperature strength, materials like silicon nitride are becoming more common for use in high performance applications. However, there have been limited studies of the fatigue behavior of small cracks in silicon nitride and other materials toughened...
Resource Type:: Dissertation
Full Text:: facilities. Sarah Gallops for starting out on this journey together and helping each other through with

Creator:: Mirzaei, Babak
Abstract:: The advent of synthetic adhesives has transformed the structural applications of wood. However, a persistent issue in adhesively-bonded wood products has been moisture durability. When designing wood based composites, moisture durability will depend on both the wood phase and the adhesive phase. A key question, therefore, is how does one...
Resource Type:: Dissertation
Full Text:: systems can be defined, i.e., TL, RL, LR, TR, RT and LT (Smith & S. Vasic, 2003). The first letter

Creator:: Philo, Sarah L.
Abstract:: The effect of ambient environment on the fatigue behavior of two Zr-Ti-Cu-Ni-Be bulk metallic glasses (BMGs) is examined in the present study. The first metallic glass, Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅, was tested to establish the presence of an environmental effect in the fatigue growth curve measured in ambient air. Fatigue growth curves produced...
Resource Type:: Masters Thesis
Full Text:: : Minalben Shah, Sarah Gallops, and Rawley Greene for all of their help with almost every aspect of my

Creator:: Shelton, Christopher T.
Abstract:: The lead-zirconate-titanate (PZT) solid solution system is currently the workhorse of piezoelectric-based microelectromechanical systems (MEMS) research. Among bulk materials it is known to be one of the strongest piezoelectrics, with extremely high piezoelectric coefficients and electro-mechanical coupling factors. Reproducing these exceptional qualities in thin film form, however, requires precise tuning...
Resource Type:: Masters Thesis
Full Text:: to thank. I owe Dr. Kruzic and his entire group, especially Sarah Philo and Gallops, for their

Creator:: Jeon, Yu Hong
Abstract:: Piezoelectric materials have been widely used in electromechanical actuators, sensors, and ultrasonic transducers. Among these materials, lead zirconate titanate Pb(Zr[subscript 1‐x]Ti[subscript x])O₃ (PZT) has been primarily investigated due to its excellent piezoelectric properties. However, environmental concerns due to the toxicity of PbO have led to investigations into alternative materials systems....
Resource Type:: Dissertation
Full Text::  members and friends in Corvallis and Korea.  Especially thanks to Jon Mueller, Sarah Gallops, Seungwha

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