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 2501 for “"composites"”.
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Lightweight polyester composites
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.
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Mechanical behavior of cellular solid composites : microsandwich foams and interpenetrating phase composites
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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Biofidelic Piezoresistive Sandwich Composites
… and electromechanical behavior of these sandwich composites was characterized using resistivity measurements, tensile tests and dynamic mechanical analysis (DMA). The composition of the two-part silicone in this composite was varied to obtain electrical conductivity and piezoresistivity while …
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Nanocrystalline copper-tantalum composites
This research investigated the physical metallurgy, high temperatures coarsening, and processing/structure relationships for Cu$\sb{\rm 1-x}$Ta$\sb{\rm x}$ (x = $\sim$5 to 20 atomic percent) alloys. These metastable alloys were produced using a plasma assisted physical vapor deposition (PAPVD) …
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Biologically reinforced geopolymer composites
… Cork particle reinforced sodium geopolymer composites were shown to have a maximum flexural strength of 2.5 MPa, and an average strain-to-failure of 0.75%. Abaca fiber reinforced sodium geopolymer composites had flexural strengths exceeding 25 MPa. The main focus of this study was abaca …
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Mechanics of 3D Composites
… understanding of mechanical response of 3D composites and ceramics. Composite materials have widespread applications ranging from aerospace, civil sectors to sports and drones. One important application is in composite armours where composites and ceramic layers are used together. Therefore, …
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Micro-Architected Carbon Composites
… of ~96% and ~99%. Micro-architected carbon composites were created using the superior infiltration method, and all three stages (polymer, carbon, composite) were compression tested to determine the modulus and strength. The infiltration of the epoxy created an interpenetrating phase …
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Composites cost modeling : complexity
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Fatigue of rubber composites
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1988.
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High temperature ceramic composites
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Natural fibre reinforced cement composites
… fibre (mainly wood pulp fibre) reinforced cement composites and their applications as commercial products, especially as the main alternatives to asbestos reinforced cement materials. Chapter four and five discuss fabrication and performance characterisation of the resulting composites.
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Geopolymer-derived ceramics and composites
The development of ceramics and composites from geopolymer precursors is leading to exciting new avenues in ceramic synthesis and composite applications. In this work, we developed, synthesized, and characterized materials derived from geopolymers for use in extreme environments. In the first …
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Mechanical properties of energetic composites
… the mechanical response of particulate polymer composites, both energetic and inert, that contributes towards the wider understanding of deformation and damage mechanisms in Polymer Bonded Explosive (PBXs). Specifically, high and low strain-rate compression experiments were performed on several …
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Rapid prototyping of green composites
… for making strong, large or durable objects. Composites are materials which are very strong and lightweight, combining the tensile strength of a fibre and the compressive strength of a resin matrix. Unfortunately, tooling for composite parts is currently expensive, slow to make, and therefore …
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Forming processes for advanced composites
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Silicone resins and their composites
… with a vacuum bagging technique. Silicone resin composites are proved to be thermally stable, moisture resistant and fire resistant. However, they have weak strength and modulus. Their temperature dependence of mechanical properties is also big and results in poor property retention at high …
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Corrosion of aluminum-matrix composites
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1989.
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Autohesion model for thermoplastic composites
… bond development in AS4/P1700 unidirectional composites was performed. The double cantilevered beam (DCD) Mode l fracture toughness test was selected. The DCB specimens were fractured and healed in a special fixture with different combinations of temperature pressure, and time. The healed DCB …
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Analysis of Composites using Peridynamics
… at the micro- or nanoscale, i.e. modeling of composites and advanced aerospace applications. Peridynamics is a recently developed theory that substitutes the differential equations that constitute classical continuum mechanics with integral equations. Since integral equations are valid at …
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Properties of composites sampling procedures
In a composite sampling procedure initial samples (increments) are drawn from a lot and physically mixed to form composite samples. Subsamples are then taken from these composite samples and tested to determine the lot quality, usually the lot mean, μ<sub>x</sub>. Composite sampling procedures …
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