Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 276 for “"elastomeric"”.
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Mechanics of elastomeric copolymers
Elastomeric copolymers have been versatile materials for a broad variety of engineering applications of critical importance ranging from ballistic protective coatings to self-healing microstructures, possessing a backbone structure composed of alternate hard and soft segments, where the hard/soft …
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Tactile sensing using elastomeric sensors
GelSight, namely, elastomeric sensor, is a novel tactile sensor to get the 3D information of contacting surfaces. Using GelSight, some tactile properties, such as softness and roughness, could be gained through image processing techniques. In this thesis, I implemented GelSight principle to …
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Soil ingestion by elastomeric seals
Studies of elastomeric seal failure have until recently focused on the erosion of the sealing interface. This has limited the improvements in seal life to the application of wear-resistant materials. The present work shows that three stages of particle ingestion precede seal erosion, and that seals …
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Mechanics of swellable elastomeric seals
… thesis investigates the mechanics of swellable elastomeric seals for the purpose of hydraulic fracturing in oil and gas applications. The first component of the thesis is the development of a laboratory-scale apparatus for the visualization of swellable seals in situ up to the point of leakage. …
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Frictional oscillations in elastomeric sliding
… by an automotive stabilizer bar, rotating in an elastomeric bushing. The focus of the research is to determine the conditions under which noise or stick-slip occurs. Elastomers tested include natural rubber with 0,5,10, 20, and 50 phr (parts per hundred rubber) carbon black, butyl, polydimethyl …
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Mechanical Properties of Elastomeric Proteins
… is placed on the nanoscale properties of elastomeric proteins. By better understanding the fundamental characteristics of these proteins at the nanoscale, we can better design synthetic rubbers to provide the same desired mechanical properties.
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Microtransfer printing of elastomeric active composites
… and micro-transfer printing. Thus, an active elastomeric composite with a 4x4 array of individual, active stamps with a Lead Zirconate Titanate (PZT) actuator was developed to enable high throughput micro-transfer printing. This was achieved by introducing a multiplexed interconnection scheme …
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Elastomeric microsystems fabricated using transfer printing
… printing towards the fabrication of unusual elastomeric microsystems for sensing, actuation, energy harvesting and robotic micromanipulation. Conventionally, microsystems are constructed by rigid materials such as semiconductors, metals, and dielectric materials with a set of well-established …
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A Study of Durability for Elastomeric Fuel Cell Seals and an Examination of Confinement Effects in Elastomeric Joints
… in series to achieve the desired voltage levels. Elastomeric gaskets are commonly used between each cell to insure that the reactant gases are isolated; any failure of a fuel cell gasket can cause the reactants to mix, which may lead to failure of the fuel cell. An investigation of the durability …
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Condition Monitoring Sensor for Reinforced Elastomeric Materials
… the whole body. The final challenge, specific to elastomeric materials, is to develop a sensor capable of surviving a great deal of strain as the body bends, flexes, and stretches during typical operation.</p><p>This thesis provides a solution to these problems by exploring the development and …
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Elastomeric grating sensor for multifunctional optofluidic biosensing
… for this purpose. Sensors based on deformable elastomeric materials have several benefits such as greater sensitivity, high spatial resolution, reliability and low cost. The Multifunctional Elastomeric Grating Sensor (EGS) presented in this thesis is fabricated using elastomeric materials. The …
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Three-dimensional nanofabrication with elastomeric phase mask
… field nanopatterning (PnP), uses conformable, elastomeric phase masks to pattern thick layers of transparent, photosensitive materials in a conformal contact mode geometry. Aspects of the optics, the materials, and the physical chemistry associated with this method are outlined in chapter 1. We …
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Local electromechanical behavior of elastomeric conductive composites
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Mechanics of abrasive wear of elastomeric materials
Elastomeric materials are widely used as tire and sealing materials due to their ability to undergo large deformations and conform to the mating surface. However, their applications often result in repeated contact with abrasive particles, which act to abrasively wear the elastomers. Elastomeric …
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The Ballistic Response of Particle-Filled Elastomeric Systems
The present study investigates the complex multiscale ballistic response of particle-filled polymer composites in an effort to link the bulk material behaviour to variations in the microstructure. The multiphase systems under investigation consist of micron-sized ceramic powders integrated within a …
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Large strain time-dependent behavior of elastomeric materials
The mechanical behavior of elastomeric materials is known to be rate-dependent and to exhibit hysteresis upon cyclic loading. Although these features of the rubbery constitutive response are well-recognized and important to its function, few models attempt to quantify these aspects of response. …
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Toughening polyester resin by elastomeric coating on filler
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1980.
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Evaluation of the durability of elastomeric easy-release coatings
… protocol for the evaluation of the durability of elastomeric easy release coatings and to implement it on selected candidate coatings. A brushing apparatus was designed and built to simulate the cleaning processes of ship hulls. Wear was measured with profilometry. The proposed methodology is …
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