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Accelerated Creep Testing of New Creep-Resisting Weld Metals
Welding in the World, 2010New creep-resisting weld metals of P91 grade were manufactured by manual metal arc (MMA) process producing multi-bead multi-layer test coupons, from which specimens were taken for accelerated creep testing on Gleeble physical simulator. The recently developed accelerated creep testing (ACT) procedure on Gleeble allows transforming in a relatively short
Stan T. Mandziej +2 more
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Confined-Accelerated Creep Tests to Determine the Creep Reduction Factor
Applied Mechanics and Materials, 2014The creep characteristics of geogrids is one of the most important factors affecting its permanent in reinforced soil structures. currently, most of the creep tests are under unconfined conditions, the results deviates significantly from the real status in the application . And conventional creep tests are time-consuming and costing.In this paper, time-
Zhen Zhang +3 more
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Accelerated Creep Testing of Trenchless Liners
New Pipeline Technologies, Security, and Safety, 2003The study's goal was to develop a short term test to predict the time-dependent creep behavior of commercial polymers using both a modified effective time theory (ETT) and time-temperature superposition (TTSP) methods. The results show the TTSP to be an accurate method for determining the shift factors to adjust creep data for temperature changes. Also,
Ever J. Barbero, Kevin J. Ford
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A mathematical model of cyclic creep acceleration
Materials Science and Engineering, 1975Abstract A mathematical model is proposed to explain qualitatively the creep acceleration of materials under cyclic loading. Under constant load, the non-uniformity of the distribution of plastic strains, which increases with loading time, introduces an internal back stress field in the material.
T. Mura, A. Novakovic, M. Meshii
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New accelerated rock creep model considering nonstationary viscosity coefficient
International Journal of Non-Linear MechanicsJunchao Jin +4 more
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Comments on micromechanism of cyclic creep acceleration
Scripta Metallurgica, 1985Etude du comportement de monocristaux et de polycristaux de cuivre pur. Les resultats representent une tres importante contribution experimentale a la comprehension du mecanisme de l'acceleration du fluage cyclique dans les ...
J. Pokluda, P. Staněk
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Statistical Aspect in Accelerating Creep and Creep Fracture of OFHC Copper
Journal of the Physical Society of Japan, 1958A large number of creep rupture tests on OFHC copper wire have been carried out at stress levels of 24.0∼25.0 Kg/mm 2 and temperatures of 8∼40°C. The F-test was made for the differences in variance between time for initiation of accelerating creep and time for rupture measured from the initiation of accelerating creep, and the regression analysis ...
Takeo Yokobori, Hideharu Ohara
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Accelerating creep of the slopes of a coal mine
Rock Mechanics and Rock Engineering, 1987A 249 day long record of the accelerating creep of a slope of an open-pit coal mine is analyzed, using linear regression, to test four creep laws. The Saito and Zavodni and Broadbent laws did not lead to a satisfactory estimation of the time of failure as a range of times of failure satisfied the goodness of fit criteria.
Cruden, D. M., Masoumzadeh, S.
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Surrogate Models for 3D Finite Element Creep Analysis Acceleration
Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, 2023Abstract A gas turbine and especially its blades is at the heart of any gas and oil fired power station and thus it is critical to maximize the length of their design life as a key component for successful utilization. Blades weaknesses could affect the whole process of the energy generation, contractual penalty shall be paid in this ...
Jason Abdallah +3 more
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Accelerated creep testing for high temperature design
2022Components in-service at temperature are most likely designed with a creep strain limit achieved in a time frame as end of life criteria. In applying a negligible limit of 0.2% creep strain at 200kh recent work within European Standards has found the traditional rule-ofthumb that ferritic martensitic (F/M) materials do not creep below 375 C, and
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