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Showing 1 to 20 of 55 for “"Creep behavior"”.
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Creep behavior of natural fiber reinforced polymer composites
Creep behavior of natural fiber/polymer composites (NFPCs) was studied in response to the increasing application of this material as structural building products. Factors that influence creep behavior of the composites were investigated by analyzing creep curves of several different NFPC systems, …
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Influence of Testing Conditions on Creep Behavior of Clays
Made available in DSpace on 2014-12-10T22:22:17Z (GMT). No. of bitstreams: 1 7511609.pdf: 6827570 bytes, checksum: 51023313a3cede82d286c3946a57921a (MD5) Previous issue date: 1974
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High temperature creep behavior of Inconel 617 and Haynes 230
… on the biaxial, long term, high temperature creep behavior for Alloy 617 and Alloy 230. The creep mechanisms, including dislocation creep and grain boundary sliding, were found for the stress range of 10 to 55 MPa at 850oC, 900oC and 950oC for Alloy 617. In the contrast, only dislocation …
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Electrical resistivity variations and fault creep behavior along strike-slip fault systems
Thesis. 1975. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Creep behavior of binary solid solutions of nickel with molybdenum and tungsten
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Materials Science and Engineering.
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Undrained creep behavior of Atchafalaya clay from Cu direct-simple shear tests.
Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1973. Civ.E.
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Quasi-Static and Creep Behavior of Enhanced SIC/SIC Ceramic Matrix Composites
… combustor liners in stationary gas turbines. The creep behavior of woven Enhanced SiC/SiC composites was studied at temperatures from 600 to 1200 °C and at 140 to 220 MPa stress levels. Most researchers studying the creep behavior of ceramic matrix composites (CMCs) use the time hardening model …
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Finite element simulation of creep behavior in enhanced refractory material for glass furnace
… stresses during its service life. Considerable creep could occur in the furnace, if the refractory material is not creep resistant.;In order to improve the performance of refractory materials, Oak Ridge National Laboratory (ORNL) is utilizing High Density Infrared (HDI) technology. This …
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Analysis of Creep Behavior and Parametric Models for 2124 Al and 2124+SiC Composite
The creep behavior of unreinforced 2124 aluminum and 2124 aluminum reinforced with 15 w/o silicon carbide whiskers was studied at temperatures from 250 F to 500 F. Tensile tests were conducted to determine the basic mechanical properties, and microstructural and chemical anyalyses were performed to …
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An experimental investigation of the creep behavior of an underground coalmine roof with shale formation
… Testing and Materials) have not recommended any creep testing procedure. Therefore, the objective of this research was to investigate the time-dependent deformational behavior of immediate coal measures rock (shale) and then use phenomenological equations to fit the experimental data and produce …
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Effect of dislocation substructure on the primary creep behavior of alpha titanium at elevated temperature
Constant stress creep tests were performed in vacuo on alpha titanium in various thermomechanical treatments. At 500°C and 527°C annealed alpha titanium exhibits an anomalous creep arrest in the initial portion of the creep curve. After this creep arrest the creep curves swept up to a true steady …
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Creep Behavior Of Thin Laminates Of Iron-Cobalt Alloys For Use In Switched Reluctance Motors And Generators
… this effort to measure, model, and predict the creep behavior of such advanced magnetic materials. Hiperco® Alloy 50HS, manufactured by Carpenter Technology Corporation, is one of the leading candidates for application and is studied in this effort by subjecting mechanical test specimens to a …
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Influence of zirconium hydride on the biaxial creep behavior of Zircaloy-4 cladding for interim dry storage of spent nuclear fuel
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-12-01
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Transient moisture effects on the viscoelasticity of synthetic fibers and composites
… conditions can accelerate the viscoelastic behavior of certain materials over that of constant moisture conditions. This is termed the mechano-sorptive phenomenon. The thrust of this research effort is to study the mechano-sorptive effects on the creep behavior of synthetic fibers and …
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Multiscale In-Situ Characterization of Crystal Orientation, Temperature, and Microstructure Effects on Creep Defromation of Pure Magnesium and Mg-Al-RE Alloys
… Their broader use is restricted by limited creep resistance and pronounced anisotropy of plastic deformation, especially at elevated temperatures. This thesis examines how crystal orientation, temperature, and β-phase morphology govern creep behavior in pure Mg and AE44 alloys. Novel in-situ …
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Reactive infiltration processing and compression creep of NiAl and NiAl composites
… NiAl. The high-temperature uni-axial compression creep behavior of uni-directionally reinforced continuous fiber composite materials was investigated using NiAl-W as a model system for the case where both the NiAl matrix and the W fiber underwent plastic deformation by creep. The creep behavior of …
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Crystallization, Melting Behavior, Physical Properties, and Physical Aging of Ethylene/1-Octene Copolymers
… is investigated by calorimetry, density, and creep measurements. The temporal evolution of the multiple melting of EO-copolymers is monitored by differential scanning calorimetry. The low temperature endotherm displays an evolution similar to that observed for the enthalpy recovery in glasses …
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Processing Dependent Mechanical Behavior and Molecular Structure of Electrospun Polymeric Nanofibers
… the strain rate sensitive elastic modulus and creep behavior of the nanofibers. At large viscoplastic deformations, the model is composed of a Langevin spring and an Eyring's dashpot that capture the strain rate sensitive yield stress and the orientation hardening observed in the experimental …
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Indentation vs. Uniaxial Power-law Creep of Sn-based Solder Material: A Numerical Assessment
It is crucial to understand the creep behavior of Pb-free solder alloys in electronic packaging. Typical service environments are between 298 and 373K. The thermal mismatch induced stresses acting on solder joints result in extensive rate-dependent plastic deformation. The solder alloy is …
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Creep properties of source rocks using indentation : the role of organic matter on texture and creep rates
… of organic matter affecting texture and driving creep behavior in source rocks. To isolate the porous organic-rich clay composites, we adopt elaborate methodology that uses the mechanical properties probed with the indentation technique, chemistry obtained from spectroscopy, and chemo-mechanical …
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