Results 161 to 170 of about 1,750 (215)

Enhanced Cyclically Stable Plasticity Model for Multiaxial Behaviour of Magnesium Alloy AZ31 under Low-Cycle Fatigue Conditions. [PDF]

Materials (Basel)
Litrop A, Klemenc J, Nagode M, Šeruga D.   +3 more
europepmc   +1 more source

Structure of the M. tuberculosis DnaK-GrpE complex reveals how key DnaK roles are controlled. [PDF]

Nat Commun
Xiao X, Fay A, Molina PS, Kovach A, Glickman MS, Li H.   +5 more
europepmc   +1 more source

Dynamic Stress Enhances Electrocatalytic Hydrogen Evolution Reaction on Metals

Monai M, Yu X, Bianco E, Wang H, Deelen S, Brink Yvd, Meirer F, Bourquard C.   +7 more
europepmc   +1 more source

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Ratcheting strain in interstitial free steel

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2013
Abstract This investigation illustrates ratcheting phenomenon, in-situ substructural variations during ratcheting and post-ratcheting tensile properties of interstitial free steel at ambient temperature (≈300 K). The results highlight that the nature of strain accumulation is dependent on the magnitude of the employed combinations of mean stress (σm)
Krishna Dutta, K K Ray
exaly   +2 more sources

Development of a new ratcheting fatigue life prediction model of a nickel-based superalloy based on ratcheting strain rate

Materials Letters, 2022
Abstract The stress-controlled low cycle fatigue and ratcheting fatigue behaviors of a nickel-based superalloy were proposed under a series of symmetric and asymmetric cyclic loadings at 650 °C to explore the effects of stress amplitude and mean stress on fatigue life.
Weiwen Kong, Chao Yuan
exaly   +2 more sources

Influence of Ratcheting Strain on Tensile Properties of A356 Alloy

Materials Today: Proceedings, 2018
Abstract Ratcheting, a special kind of fatigue damage, is known to occur under the influence of asymmetric stress-controlled cyclic loading. Engineering structures undergo premature failure once ratcheting damage happens to these. The present study aims to describe the effect of the imposition of previous ratcheting damage on the tensile properties ...
Srimant Kumar Mishra, Himadri Roy, Krishan Dutta   +2 more
openaire   +2 more sources

Effect of mean stress and ratcheting strain on fatigue life of steel

International Journal of Fatigue, 1996
Detailed results of stress-controlled fatigue tests with tensile mean stress on ASTM A-516 Gr. 70 steel are presented. By using different preloading procedures, the ratcheting effect on the fatigue life of materials was separated from the mean stress effect. A previously proposed energy-based life prediction criterion is extended to include the effects
D Kujawski, F Ellyin
exaly   +2 more sources

Triphasic ratcheting strain prediction of materials over stress cycles

Fatigue and Fracture of Engineering Materials and Structures, 2012
ABSTRACTThis study intends to formulate ratcheting strain evolution in steel alloys of 42CrMo, 20CS, SA333 Gr. 6 C‐Mn and OFHC copper over uniaxial stress cycles. Stages of ratcheting deformation were related to stress cycles, lifespan, mechanical properties and amplitude and mean stress components by means of linear and nonlinear functions.
G R Ahmadzadeh, A Varvani-Farahani
exaly   +2 more sources

Uniaxial strain ratcheting behavior of dented steel tubular: An experimental study

Engineering Failure Analysis, 2014
Abstract Changes in the internal pressure and the temperature in a steel pipeline generates cycles of high axial compression/relaxing in the line. This makes the line vulnerable to cyclic creep and progressive plastic straining (ratcheting). On the other hand, offshore pipelines are usually laid unburied, so they might become disposed to heavy ...
M Zeinoddini, M Ezzati
exaly   +2 more sources

Influence of stress level on uniaxial ratcheting effect and ratcheting strain rate in austenitic stainless steel Z2CND18.12N

, 2018
Uniaxial ratcheting behavior of Z2CND18.12N austenitic stainless steel used nuclear power plant piping material was studied. The results indicated that ratcheting strain increased with increasing of stress amplitude under the same mean stress and different stress amplitude, ratcheting strain increased with increasing of mean stress under the same ...
Chen, Xiaohui, Chen, Xu, Chen, Haofeng
openaire   +3 more sources