Results 21 to 30 of about 1,082 (176)

Ratcheting behavior of Eurofer97 at 550 °C

Nuclear Materials and Energy, 2018
The components in reactor are usually exposed to cyclic loading caused by frequent startups, shutdown and load fluctuations which lead to ratcheting effect.
Kuo Zhang, Jarir Aktaa
doaj   +1 more source

Finite Element Implementation of a Temperature-Dependent Cyclic Plastic Model for SA508-3 Steel

Metals, 2018
A new temperature-dependent cyclic plastic model, combining the nonlinear cyclic softening and kinematic hardening rules is established for a nuclear material of SA508-3 steel.
Jun Tian, Jian Li, Hai Xie, Yu Yang, Qianhua Kan   +4 more
doaj   +1 more source

An Identification of the Material Hardening Parameters for Cyclic Loading – Experimental and Numerical Studies [PDF]

Archives of Metallurgy and Materials, 2020
This paper presents the results of experimental studies and numerical simulations of the ratcheting for the PA6 aluminum. In the initial determination of the material hardening parameters, the samples were subjected to the symmetrical strain-controlled ...
A. Skrzat, M. Wójcik
doaj   +1 more source

CRYOGENIC RATCHETING OF PRESTRAINED AUSTENITIC STAINLESS STEEL S30408

Jixie qiangdu, 2020
Taking advantage of the EUM-25 K20 tension-torsion fatigue testing machine by CARE,the cryogenic uniaxial ratcheting tests were carried out for the S30408 specimens with and without weld,and with 0%,8%,and 12% pre-strains at110 K.
LI LeiLei, GAO BingJun, DONG JunHua, CHEN Xu   +3 more
doaj  

Experimental and Numerical Analysis of Ratcheting Behavior of Super Duplex SAF2507 Stainless Steel Under Uniaxial Loading

Applied Sciences
Super duplex SAF2507 stainless steel is widely used in petrochemical piping systems during the transport of substances. The pipelines are subjected to cyclic loads due to road vibration and internal pressure, which causes the ratcheting behavior. In this
Hongru Liu, Xiaohui Chen, Xiaoyue Zhang, Xiaodong Cui   +3 more
doaj   +1 more source

Ratcheting Simulation of a Steel Pipe with Assembly Parts under Internal Pressure and a Cyclic Bending Load

Applied Sciences, 2019
The ratcheting behavior of a steel pipe with assembly parts was examined under internal pressure and a cyclic bending load, which has not been seen in previous research.
Hongwei Yang, Ying Dai, Pengfei He
doaj   +1 more source

Cyclic deformation response of annealed low-carbon steel: Insights from ratcheting and LCF experiments

Journal of Alloys and Metallurgical Systems
Low cycle fatigue (LCF) and ratcheting experiments were carried out on annealed low-carbon steel at room temperature within a laboratory environment, utilising stress and strain control modes.
Surajit Kumar Paul
doaj   +1 more source

Near-tip strain ratchetting and crack growth at elevated temperature [PDF]

International Journal of Fatigue, 2016
Abstract In this work, we have extended our earlier work on the concept of ratchetting strain as a crack driving force (Tong et al., 2013), to examine the crack growth of a nickel-based superalloy at selected temperatures in vacuum under both fatigue and fatigue-creep loading conditions.
Tong, Jie, Cornet, C, Lin, Bing, Lupton, Colin John, Li, HY, Bowen, P, Williams, S, Hardy, M   +7 more
openaire   +3 more sources

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

Integrated Opto–Biomechatronics For Single Muscle Fibre Structure‐Function Assessment: The MyoRobot 3.0

Advanced Science, EarlyView.
We present the MyoRobot 3.0, an advanced platform that combines high‐resolution imaging with automated mechanical testing to improve the accuracy of single muscle fibre analysis. The system tracks fibre diameter changes during stretch, preventing major stress miscalculations.
Michael Haug, Moritz Hellmann, Larysa Kovbasyuk, Maria Eleni Vazakidou, Milena Theis, Oliver Friedrich   +5 more
wiley   +1 more source