Results 221 to 230 of about 10,379 (248)

Ratcheting fatigue behavior of Zircaloy-2 at room temperature

Journal of Nuclear Materials, 2016
Abstract Nuclear core components of zirconium alloys experience asymmetric stress or strain cycling during service which leads to plastic strain accumulation and drastic reduction in fatigue life as well as dimensional instability of the component.
R.S. Rajpurohit, G. Sudhakar Rao, K. Chattopadhyay, N.C. Santhi Srinivas, Vakil Singh   +4 more
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Ratcheting Behavior of a Titanium-Stabilized Interstitial Free Steel

Metallurgical and Materials Transactions A, 2012
Engineering stress-control ratcheting behavior of a titanium-stabilized interstitial free steel has been studied under different combinations of mean stress and stress amplitude at a stress rate of 250 MPa s−1. Tests have been done up to 29.80 pct true ratcheting strain evolution in the specimens at three maximum stress levels. It is observed that this
P. S. De, P. C. Chakraborti, B. Bhattacharya, M. Shome, D. Bhattacharjee   +4 more
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Uniaxial Ratcheting Behavior of Dual-Phase Steel Sheet

Journal of Materials Engineering and Performance, 2018
Uniaxial ratcheting behavior of an automotive-grade dual-phase steel sheet of 1.6 mm thickness has been investigated through engineering stress-controlled asymmetric cyclic loading experiments in the elastoplastic regime at ambient temperature (~ 28°C).
Partha Sarathi De, Jayanta Kumar Mahato, Amrita Kundu, P. C. Chakraborti, M. Shome   +4 more
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An elasto-viscoplastic model to describe the ratcheting behavior of articular cartilage

Biomechanics and Modeling in Mechanobiology, 2018
In the present work, a constitutive model for articular cartilage is proposed in finite elasto-viscoplasticity. For simplification, articular cartilage is supposed to be a typical composite composed of a soft basis and a fiber assembly. The stress tensor and free energy function are hence accordingly divided into two components.
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Tensile ratcheting behaviors of bronze powder filled polytetrafluoroethylene

Frontiers of Chemical Science and Engineering, 2013
A series of tensile and ratcheting experiments for compacted polytetrafluoroethylene (PTFE) and bronze filled PTFE (PTFE/bronze) were conducted on dynamic mechanical analyzer (DMA-Q800). The effects of mean stress, stress amplitude and temperature on the ratcheting behaviors of PTFE and PTFE/bronze were investigated.
Wenjuan Xu, Hong Gao, LiLan Gao, Xu Chen, Yong Wang   +4 more
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Micromechanical Modeling of the Ratcheting Behavior of 304 Stainless Steel

Journal of Engineering Materials and Technology, 2016
Numerical simulations of 304 austenitic stainless steel (SS304) cyclic and ratcheting responses are performed using polycrystalline plasticity models. On the basis of the polycrystalline model of Cailletaud and Pilvin (1994, “Utilisation de modèles polycristallins pour le calcul par éléments finis,” Rev. Eur. Élém. Finis, 3, pp.
Ben Naceur, I., Sai, Kacem, Hassan, T., Cailletaud, Georges   +3 more
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Ratchetting behavior of 20MnMoNi55 reactor pressure vessel steel

Journal of Nuclear Materials, 2015
Abstract Uniaxial ratchetting characteristics of 20MnMoNi55 steel at room temperature were studied experimentally. The effects of stress amplitude and mean stress on the ratchetting behavior of the steel were analyzed. It can be concluded that the ratchetting strain amplitude and ratchetting strain rate of 20MnMoNi55 steel increases with increasing ...
Apu Sarkar, Bhupendra K. Kumawat, J.K. Chakravartty   +2 more
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Microstructure and Ratcheting Behavior of Additive Manufactured 4043 Aluminum Alloy

Journal of Materials Engineering and Performance, 2018
In this paper, 4043 aluminum alloy was printed using additive manufacturing (AM) with robot cold metal transfer (CMT) technology. The microstructure and mechanical properties of different parts, including the bottom, middle and upper portions of the printed AM 4043 aluminum alloy, were analyzed. Ratcheting tests were performed using an asymmetric load,
Yuan Wang, Shanglei Yang, Chaojie Xie, Haobo Liu, Qi Zhang   +4 more
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Thermal Ratcheting Behavior of a Cylindrical Structure with Plate-to-Shell Junction

International Journal of Modern Physics B, 2003
In this study the progressive inelastic deformation behavior of the 316L stainless steel cylindrical structure with plate-to-shell weld junction under cyclic thermal loads was carried out by structural test and analysis. This structural test intends to simulate the thermal ratcheting behavior occurring at the thermal liner of the liquid metal reactor ...
Hyeong Yeon Lee, Jong Bum Kim, Jae Han Lee, Jong Min Lee   +3 more
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Loading history effect on ratcheting behavior: Modelling and simulation

International Journal of Mechanical Sciences, 2023
Jiawei Bai, Ke Jin, Yong Kou
openaire   +1 more source