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Showing 1 to 9 of 9 for “"Power-law creep"”.
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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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Investigation of indentation derived creep response using constant load and constant strain rate methods
… can occur at high temperatures. Typically the creep test is conducted to characterize the deformation features; however, the conventional uniaxial power-law creep test may be impractical for small scale materials. Accordingly, instrumented indentation techniques are frequently employed. 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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The variation of subgrain misorientation in aluminum with large steady-state creep strain
… two types of basic changes during steady-state creep. At the onset of steady-state behavior (epsilon = 0.20) all subgrain boundaries had small misorientations, typically, 0.6. The misorientation across boundaries formed as a result of dislocation accumulation continued to increase well past …
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Elastic and viscous anisotropy in Earth's mantle : observations and implications
… to localization of the strain and the extend of power-law creep in the upper mantle.
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Finite Element Analysis of a Shaft-Rotor System
… The development of an aircraft Integrated Power Unit and an Internal Starter/Generator will be instrumental in producing sufficient electrical power to run all non propulsive systems. Iron-cobalt alloys, such as Hiperco alloy 50HS, are high temperature, high strength magnetic materials …
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Role of cracks in creep of brittle, polycrystalline, structural ceramics
… study was conducted of the effect of cracks on creep of polycrystalline, brittle structural ceramics. Two independent mechanisms of contribution of cracks were defined. The mechanism of elastic creep by crack growth represents the rate of increase in strain, with time, resulting from the …
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3d rheological modelling in the aegean region and its importance for the seismotectonics of the area
… namely the frictional sliding and the power-law creep representing, respectively, the brittle and the ductile behaviours. Literature data have been collected in order to define the proper range of values for most of the input parameters in the rheological constitutive equations. …
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The linear and nonlinear rheology of multiscale complex fluids
… these materials exhibit multiscale power law relaxation under externally imposed deformation. Compact constitutive frameworks that can accurately describe and predict both the linear as well as the nonlinear rheology of such complex fluids have remained elusive. Moreover, the …