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Numerical Simulation for Durability of a Viscoelastic Polymer Material Subjected to Variable Loadings Fatigue Based on Entropy Damage Criterion. [PDF]
Polymers (Basel)Li Y, Fikry MJM, Koyanagi J.
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A stochastic mechanism drives fast substrate translocation in the AAA+ machine ClpB. [PDF]
Nat CommunCasier R +4 more
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Ratcheting behavior of articular cartilage under cyclic unconfined compression
Materials Science and Engineering C, 2015The ratcheting deformation of articular cartilage can produce due to the repeated accumulations of compressive strain in cartilage. The aim of this study was to investigate the ratcheting behavior of articular cartilage under cyclic compression. A series of uniaxial cyclic compression tests were conducted for online soaked and unsoaked cartilage ...
Li-Lan Gao, Hong Gao
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Fatigue and ratcheting behaviors of CP-Ti at room temperature
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2014Abstract Based on the careful analyses of the stress controlled fatigue behavior of commercially pure titanium (CP-Ti) at room temperature, two stress regions can be evidently identified by cycle strain range, ratcheting strain, min ratcheting strain rate, ratcheting failure strain and fracture morphologies.
Zhou Chang
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Uniaxial and biaxial ratcheting behavior of ultra-high molecular weight polyethylene
Materials Science and Engineering C, 2018Experimental studies were conducted to investigate the uniaxial and biaxial ratcheting behaviors of Ultra-high molecular weight polyethylene (UHMWPE). The effects of stress amplitude, stress rate and hydroxyapatite content on uniaxial ratcheting behavior were studied firstly.
Hong Gao, Lilan Gao, Zhe Zhang
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Uniaxial ratchetting behavior of vulcanized natural rubber
Polymer Engineering & Science, 2007AbstractMost of rubber engineering components endure cyclic loading during their service, and a nonzero mean stress during cyclic loading may cause an accumulation of strain which is known as ratchetting phenomenon. In order to study the ratcheting effect of rubber, a series of uniaxial ratchetting experiments were conducted on vulcanized natural ...
Weiwei Yu +4 more
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Thermal Ratcheting Criteria and Behavior of Piping Elbows
Journal of Pressure Vessel Technology, 1990A thermal ratcheting test was performed using an elbow model test specimen subjected to sustained primary load and cyclic thermal transient strains. Under severe loading conditions incremental longitudinal strains are observed in the region where a circumferential angle is around ± π/9 from the side of the elbow, while the elbow cross section was ...
M. Ueda, T. Kano, A. Yoshitoshi
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Ratchet-induced anisotropic behavior of superparamagnetic microdroplet
Applied Physics Letters, 2009Microscale ratchet structured surfaces were coated with nanoparticles, which resulted in anisotropic behavior of superparamagnetic microdroplet by magnetic field actuation. This ratchet structure enables superparamagnetic microdroplets to generate the anisotropic behavior through the alternative external magnetic field.
Jihua Zhang +3 more
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Ratcheting Behavior of Sintered Copper Joints for Electronic Packaging
IEEE Transactions on Components, Packaging and Manufacturing Technology, 2021This study experimentally investigated the whole-life ratcheting behavior of sintered copper joints with consideration of the effects of stress rate, stress amplitude, mean stress, maximum stress, and stress ratio. Deformation of joints under cyclic load was measured by a noncontact displacement detecting system.
Yanliang Shan +6 more
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