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F.R. Larson and J. Miller proposed that creep rate could adequately be described by the Arrhenius type equation: = / Where r is the creep process rate, A is a constant, R is the universal gas constant, T is the absolute temperature, and is the activation energy for the creep process.
The Hollomon–Jaffe parameter (HP), also generally known as the Larson–Miller parameter, [1] describes the effect of a heat treatment at a temperature for a certain time. [2] This parameter is especially used to describe the tempering of steels, so that it is also called tempering parameter.
The stress tending to shrink voids that must be overcome is related to the surface energy and surface area-volume ratio of the voids. For a general void with surface energy γ and principle radii of curvature of r 1 and r 2 , the sintering limit stress is [ 27 ] σ s i n t = γ r 1 + γ r 2 {\displaystyle \sigma _{\rm {sint}}={\frac {\gamma }{r ...
Fracture mechanics is the field of mechanics concerned with the study of the propagation of cracks in materials. It uses methods of analytical solid mechanics to calculate the driving force on a crack and those of experimental solid mechanics to characterize the material's resistance to fracture.
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I have merged in a few references from the Larson-Miller Parameter page, and made some comment regarding units. Not sure the units stuff is correct. Also I have recommended the Larson-Miller Parameter page be deleted as it is redundant and seems to be collecting contributions.67.87.139.9 04:06, 14 January 2014 (UTC)
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The inverse Mills ratio is the ratio of the probability density function to the complementary cumulative distribution function of a distribution. Its use is often motivated by the following property of the truncated normal distribution. If X is a random variable having a normal distribution with mean μ and variance σ 2, then