Results 1 to 10 of about 196 (190)

Study on the ratchetting behavior of glass fiber-reinforced epoxy composites: Experiment and theory

open access: yesPolymer Testing, 2023
To discuss the ratchetting behavior of short glass fiber-reinforced epoxy polymer composites, experimental and theoretical studies were carried out. The effects of the fiber content and peak stress on the ratchetting behavior of the composite materials ...
Fucong Lu
exaly   +3 more sources

Experimental study on uniaxial ratchetting of VHB 4910 dielectric elastomer

open access: yesPolymer Testing, 2022
In this work, a series of uniaxial cyclic tests of VHB 4910 dielectric elastomer were carried out to investigate the uniaxial ratchetting and its dependence on the stress level, stress rate, peak/valley stress hold and loading history.
Weiyang Huang, Guozheng Kang
doaj   +1 more source

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

open access: yesArchives 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

Investigation on Temperature-Dependent Multiaxial Ratchetting of Polycarbonate by a Novel Experimental Method

open access: yesAdvances in Materials Science and Engineering, 2022
A novel method to heat the multiaxial hollow thin-wall specimen was proposed, where its gauge length section can be heated by the liquid (i.e., water) filled inside the specimen instead of the closed furnace.
Fucong Lu   +3 more
doaj   +1 more source

Experimental study on pure-shear cyclic deformation of dielectric elastomer at different temperatures

open access: yesPolymer Testing, 2023
A series of pure-shear cyclic tests were performed on VHB™4910 dielectric elastomer at various temperatures, and the investigations were focused on the influence of temperature variations on the cyclic deformation of the elastomer and the influences of ...
Pengyu Ma   +4 more
doaj   +1 more source

Near tip strain evolution under cyclic loading [PDF]

open access: yesFracture and Structural Integrity, 2013
The concept of ratchetting strain as a crack driving force in controlling crack growth has previously been explored at Portsmouth using numerical approaches for nickel-based superalloys. In this paper, we report the first experimental observations of the
J. Tong   +4 more
doaj   +2 more sources

Experimental study on uniaxial ratchetting-fatigue interaction of extruded AZ31 magnesium alloy with different plastic deformation mechanisms

open access: yesJournal of Magnesium and Alloys, 2023
The uniaxial ratchetting-fatigue interaction of extruded AZ31 magnesium (Mg) alloy is investigated by uniaxial stress-controlled cyclic tests at room temperature and with addressing the roles of different plastic deformation mechanisms.
Yu Lei   +4 more
doaj   +1 more source

Near tip strain evolution of a growing fatigue crack [PDF]

open access: yesFracture and Structural Integrity, 2015
Near tip full-field strains in a growing fatigue crack have been studied in situ using the Digital Image Correlation (DIC) technique in a compact tension specimen of stainless steel 316L under tension-tension cyclic loading.
M.-L. Zhu, Y.-W. Lu, C. Lupton, J. Tong
doaj   +3 more sources

Experimental investigation on uniaxial cyclic plasticity of cast AZ91 magnesium alloy

open access: yesJournal of Magnesium and Alloys, 2023
The uniaxial cyclic plasticity of cast AZ91 magnesium (Mg) alloy was investigated by conducting a series of cyclic straining and stressing tests at room temperature, and a unique cyclic plasticity (especially for ratchetting) and its physical nature were
Yu Lei, Ziyi Wang, Guozheng Kang
doaj   +1 more source

Experimental Observation on the Pure Torsional Ratchetting of Polycarbonate Polymer at Room Temperature

open access: yesAdvances in Materials Science and Engineering, 2020
The stress-controlled pure torsional cyclic tests are carried out to investigate the torsional ratchetting of polycarbonate (PC) polymer at room temperature.
Fucong Lu   +4 more
doaj   +1 more source

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