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.
Results
Showing 1 to 20 of 282 for “"Elastomer"”.
-
Instability of Dielectric Elastomer Actuators
Dielectric elastomers (DEs) are an important class of materials, currently employed in the design and realization of electrically-driven, highly deformable actuators and devices, which find application in several fields of technology and engineering, including aerospace, biomedical and mechanical …
-
Performance Optimisation of Dielectric Elastomer Generators
A Dielectric Elastomer Generator (DEG) is an electromechanical transducer, basically a highly deformable parallel-plate capacitor, made up of a soft DE membrane coated with two compliant electrodes on its opposite surfaces. This device is able to convert mechanical work, emanating from its …
-
Mechanical degradation of a polyurethane elastomer
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1986.
-
A Self -Healing Poly(dimethyl Siloxane) Elastomer
The self-healing performance of the elastomer is also investigated under torsional fatigue loading. The microcapsule-based self-healing PDMS is capable of recovering a significant portion of the original torsional stiffness and retards dynamic crack growth rate. Depending on the matrix material, a …
-
Interfacial debonding from a sandwiched elastomer layer
The problem of a thin elastomeric layer confined between two stiff adherends arises in numerous applications such as microelectronics, bio-inspired adhesion and the manufacture of soft biomedical products. A common requirement is that the debonding of the elastomeric layer from the adherends be …
-
Dynamic Modeling of Soft Robotic Dielectric Elastomer Actuator
<p>Dielectric elastomers actuators (DEAs) are among the preferred materials for developing lightweight, high compliance and energy efficient driven mechanisms for soft robots. Simple DEAs consist mostly of a homogeneous elastomeric materials that transduce electrical energy into mechanical …
-
Dynamic analysis of magnetorheological elastomer configured sandwich structures
… of the dynamic behaviour of magnetorheological elastomers (MREs) and smart sandwich structures. An extensive review, covering existing smart materials and their applications, has highlighted that smart materials and structures can be applied to large scale structures. Comprehensive experimental …
-
Blast and impact response of elastomer-coated concrete
… retrofit solution: the application of a spray-on elastomer coating to concrete structural elements. While encouraging results have been reported in the literature for masonry and steel substrates, it remains to be understood if, and by what mechanism this retrofit can enhance the blast and impact …
-
Development of dielectric elastomer actuators for MRI devices
Dielectric elastomer (DE) actuators are an emerging class of polymer actuation devices. They exhibit large strains and have high force and energy densities. They can be designed in a variety of geometries and are inexpensive to manufacture. Currently, the use of DE Actuation is limited because …
-
Biorubber (PGS) : evaluation of a novel biodegradable elastomer
… (PGS), or biorubber, is a tough, biodegradable elastomer made from biocompatible monomers. The material was designed, synthesized and characterized in the Department of Chemical Engineering at MIT. Its main features are good mechanical properties, rubberlike elasticity and surface erosion …
-
Dielectric elastomer actuators for binary robotics and mechatronics
… robotics and mechatronics based on dielectric elastomer (DE) technology. DE actuators are a novel class of polymer actuators that have shown promising low-cost performance. These actuators were not well understood and, as a result, faced major reliability problems. Fundamental studies conducted …
-
Development of Magnetorheological Elastomer System for Adaptive Vibration Isolation
… and wind loadings, featuring magnetorheological elastomers (MREs). MREs were utilized to generate adaptability (variable stiffness) to the AB system. The investigations of this project were fundamental and developmental studies ranging from material synthesis, material characterization, …
-
Additively Manufactured Dielectric Elastomer Actuators: Development and Performance Enhancement
… Among the utilized materials, dielectric elastomers (DEs) are intrinsically compliant, high energy density polymers with fast and reversible electromechanical response. Additionally, the electrically driven work principle allows DEs to be distributed in a desired fashion and function …
-
The Effect of POSS Modified Montmorillonite On Elastomer Nanocomposites
<p>The goal of this thesis was to define the structural factors that determine performance in clay/rubber nanocomposites when polyhedral oligomeric silsesquioxane (POSS) is used as a dispersant. POSS has been shown previously to enhance clay, metal oxides, and carbon nanotube dispersion in …
-
Fluidic Assisted Fabrication of Elastomer Optical Lenses Using Capillarity
Traditional methods of optical glass-based lens fabrication require subtractive manufacturing, which leads to high loss of material and long cycle time. With polymeric lenses, however, additive manufacturing methods work very well and have advantages of shorter processing times, negligible material …
-
Fabrication and characterization of co-continuous elastomer-hydrogel composites
… In this research, a co-continuous structured elastomer-hydrogel composite is fabricated to combine the elasticity of elastomer and the permeability of hydrogel. The stretchable, water permeable composite can be used as a mechanically tunable molecular sieve in drug delivery and tissue …
-
Fabrication of a picoliter microreactor with multilayer elastomer values
… of polymers has brought about substrates with elastomeric properties that can be used to the advantage of microfluidic device design. Elastomeric polymers can be used to create small scale passive valve systems. These valves can compartmentalize reactions in devices. Current microreactors only …
Page 1 of 15