Results 261 to 270 of about 44,930 (304)

Extrapolation of Sigmoidal Creep Curve by Strain Acceleration Parameter

Key Engineering Materials, 2013
It has been widely accepted that the creep characteristics at high temperatures are mainly evaluated by a minimum creep rate and a time to fracture. Although, a shape of creep curve may vary depending on deformation conditions, the apparent minimum creep rates may become the same value.
Hiroyuki Sato, Kosuke Omote, Akira Sato, Kouki Ueno   +3 more
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Creep behavior of geosynthetics by temperature accelerated testing

2017
Прогнозирование ползучести геосинтетических материалов является необходимым для определения расчетного срока службы конструкций с их применением. В данной работе были проведены испытания на ползучесть георешеток и геополотен, изготовленных из двух основных типов синтетических полимеров - полиэфира и полипропилена, используемых при производстве ...
Srungeri, Sanjeev Gautham, Alekseev, Nikolai, Kovalenko, Ilya, Stolyarov, Oleg   +3 more
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Study on Accelerated Creep Properties and Creep Damage Constitutive Relation for Volcanic Breccias

2013
In order to know about the accelerated creep properties of volcanic breccias, triaxial compression rheological experiments are carried out on rock servo-controlled triaxial rheology equipment. Based on the experimental results, the accelerated creep phase of creep curve of volcanic breccias is analyzed.
Rubin Wang, Weiya Xu, Jiuchang Zhang, Wei Wang   +3 more
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Accelerated characterization for long-term creep behavior of polymer

SPIE Proceedings, 2008
ABSTRACT Based on the observation that high stress results in increasin g creep rate of polymeric material, which is analogous to the time-temperature equivalence, where high temperature accelerates the process of creep or relaxation of polymer, the time-stress equivalence is investigated.
Rongguo Zhao, Chaozhong Chen, Qifu Li, Xiyan Luo   +3 more
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Conventional and accelerated creep tests on nonwoven needle-punched geotextiles

Geosynthetics International, 2005
Nonwoven needle-punched geotextiles are prone to creep deformations when subjected to sustained tensile loads. Creep characterization of these materials is particularly relevant in countries such as Brazil, where nonwoven geotextiles are often used in soil reinforcement applications.
B. S. Bueno, M. A. Costanzi, J. G. Zornberg   +2 more
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Grain Boundary Analysis of HT9 Steel after Accelerated Creep Testing

MRS Proceedings, 2010
AbstractFerritic/martensitic steels are attractive materials for use as components in nuclear reactors because of their high strength and good swelling resistance. Grain boundary specific phenomena (such as segregation, voiding, cracking, etc) are prevalent in these materials so grain boundary character is of primary importance.
Zhe Leng, David Field
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On the reduction of flux creep in superconducting accelerator magnets

IEEE Transactions on Magnetics, 1991
The authors have performed intensive studies on flux creep in high-T/sub c/ superconductors and on M transition curves inside the hysteresis area and were able to reduce dM/d ln t at a given B by an order of magnitude by appropriate previous magnetic field cycling. The reduction can be explained by the critical state model.
K. Kwasnitza, C. Widmer
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Orientation-dependence of Fatigue-accelerated Creep in Aluminium Single Crystals

Nature, 1965
THE character of some of the creep-fatigue interactions in metals can be extremely complex, as reviews of the subject reveal1,2. The fact that creep rates of relatively pure metals, such as lead3, copper4 and zinc5, are significantly accelerated by a superimposed fatigue stress is nevertheless well established.
A. J. KENNEDY, N. C. MCGILL
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Fitting Creep-Rupture Life Distribution Using Accelerated Life Testing Data

Journal of Pressure Vessel Technology, 2000
This paper comments on using the Larson-Miller parameter to fit the creep-rupture life distribution as a function of temperature and stress. The commonly used least-squares linear regression method assumes that the creep-rupture life follows the lognormal distribution. Most engineering literature does not discuss the validity of this assumption.
M. Zuo, S. Chiovelli, Y. Nonaka
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Accelerated containerless creep tests of refractory metals

In the nuclear, military, and aerospace industries, enhancing output and increasing the creep resistance of alloys and metals against high temperatures are critical for ensuring stability and reliability and increasing the thermodynamic efficiency of energy conversion systems.
openaire   +2 more sources