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Metallurgical and Materials Transactions A, 2002
High-temperature creep experiments often reveal a transition at very low stresses to a region where the stress exponent is reduced to a value lying typically in the range of ∼1 to 2. This region is generally associated with the occurrence of a new creep mechanism, such as grain-boundary sliding, diffusion creep, and/or Harper-Dorn creep. Several recent
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High-temperature creep experiments often reveal a transition at very low stresses to a region where the stress exponent is reduced to a value lying typically in the range of ∼1 to 2. This region is generally associated with the occurrence of a new creep mechanism, such as grain-boundary sliding, diffusion creep, and/or Harper-Dorn creep. Several recent
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Creep and Creep Rupture of Structural Ceramics
1991Structural ceramics are often two phase materials, in which rigid refractory grains, fibers, or whiskers are bonded by a less refractory matrix. At elevated temperatures, creep occurs by deformation of the matrix, resulting in the localization of stresses along grain boundaries, followed by cavitation and eventually by structural failure of the ceramic.
S. M. Wiederhorn +2 more
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Creep and Creep Stress Relaxation
1981The time-dependent increase in strain at constant stress is known as creep, whereas the decrease in stress at constant strain is known as creep stress relaxation. Both of these phenomena are very pronounced at high temperatures and can operate continuously over very long periods.
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Creep and Creep Rupture of Metallic Composites
Journal of Engineering Mechanics, 1992A creep and creep damage theory is presented for metallic composites with strong fibers. Application is to reinforced structures in which the fiber orientation may vary throughout but a distinct fiber direction can be identified locally (local transverse isotropy).
D. N. Robinson +2 more
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Kinetics of Creep and Creep Rupture
1968In the development of the modern mechanics of solids there are two distinct lines, not opposite but different. One of them is a trend to deduce the constitutive equations for different kinds of particular solids starting from few very general and very universal principles governing the behaviour of any media which might exist in reality or might be ...
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2014
Engineers designing structures operating at higher temperatures noticed that at the constant level of stress, structural deformation continue to increase. Such behavior is known as creep and strains that occur as creep strains. An opposite effect is also known: if a structure is subjected to a constant strain at elevated temperatures, the stress level ...
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Engineers designing structures operating at higher temperatures noticed that at the constant level of stress, structural deformation continue to increase. Such behavior is known as creep and strains that occur as creep strains. An opposite effect is also known: if a structure is subjected to a constant strain at elevated temperatures, the stress level ...
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1998
In Chap. 12 we described the monotonic behavior of a composite under ambient temperature conditions of loading. There are many applications of composites where cyclic fatigue and high-temperature, i.e., creep conditions prevail. Accordingly, in this chapter we go further in complexity and describe the fatigue and creep behavior of composites.
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In Chap. 12 we described the monotonic behavior of a composite under ambient temperature conditions of loading. There are many applications of composites where cyclic fatigue and high-temperature, i.e., creep conditions prevail. Accordingly, in this chapter we go further in complexity and describe the fatigue and creep behavior of composites.
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A Continuum Theory of Creep and Creep Damage
1981It is shown that the material damage in creep can be represented by a second rank symmetric tensor. The constitutive equations of creep and creep damage are formulated by employing the damage tensor as an internal state-variable. The difference between the effects of the material damage on creep and damage growth is incorporated. Anisotropic damage law,
Nobutada Ohno, S. Murakami
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2004
Creep plasticity can lead to tertiary, or Stage III, creep and failure. It has been suggested that creep fracture can occur by w-type, or wedge-type, cracking, at grain boundary triple points. Some have suggested that w-type cracks form most easily at higher stresses (lower temperatures) and larger grain sizes when grain boundary sliding is not ...
Michael E. Kassner +1 more
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Creep plasticity can lead to tertiary, or Stage III, creep and failure. It has been suggested that creep fracture can occur by w-type, or wedge-type, cracking, at grain boundary triple points. Some have suggested that w-type cracks form most easily at higher stresses (lower temperatures) and larger grain sizes when grain boundary sliding is not ...
Michael E. Kassner +1 more
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Creep-Creep: out of human scale
Human Systems Management, 1981With our American penchant for ‘bigger and better’, the pressures of the working environment constantly tempt us, individually, to amplify successful ideas. The article examines the consequences of such actions and points out that it often leads to a distortion of human scale.
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