Results 51 to 60 of about 627,761 (301)

Stress relaxation behavior of sandstone considering thermal-damage after loading–unloading histories [PDF]

open access: yesAIP Advances
The time-dependent behavior of rocks is crucial for the long-term stability of geotechnical structures, particularly concerning stress relaxation under coupled thermo-mechanical conditions.
Cunquan Wu   +7 more
doaj   +1 more source

Feasibility and Tolerability of Performing Portable MRI for Neurological Disorders in an Outpatient Neurology Clinic: A Prospective Cohort

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Accessing brain magnetic resonance imaging (MRI) can be challenging, especially for underserved patients, which may lead to disparities in neurological diagnosis. Method This mixed‐methods study enrolled adults with one of four neurological disorders: mild cognitive impairment or dementia of the Alzheimer type, multiple sclerosis ...
Maya L. Mastick   +19 more
wiley   +1 more source

Slow dynamics and stress relaxation in a liquid as an elastic medium

open access: yes, 2007
We propose a new framework to discuss the transition from exponential relaxation in a liquid to the regime of slow dynamics. For the purposes of stress relaxation, we show that a liquid can be treated as an elastic medium.
E. Orowan   +4 more
core   +1 more source

Compression stress relaxation

open access: yesPolymer Testing, 1981
Abstract The requirements of apparatus to measure stress relaxation of rubbers in compression are outlined. Apparatus available commercially are described, in particular a universal semi-automatic force measuring head and jigs which accept button test pieces and have no sliding bearings to introduce friction.
R.P. Brown, F.N.B. Bennett
openaire   +1 more source

Paramagnetic Rim Lesions Are Associated With Trans‐Synaptic Degeneration of the Visual Pathway in Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Retrograde trans‐synaptic degeneration (rTSD) from posterior visual pathway lesions in multiple sclerosis (MS) is characterized by hemi‐macular ganglion cell‐inner plexiform layer (GCIPL) thinning and contralateral visual field loss.
Abdul Jaber Tayem   +17 more
wiley   +1 more source

Stress Relaxation Behaviour and Creep Constitutive Equations of SA302Gr.C Low-Alloy Steel

open access: yesHigh Temperature Materials and Processes, 2018
In order to study the stress relaxation behaviour of SA302Gr.C low-alloy steel, the stress relaxation experiments were performed at the temperatures of 400, 500 and 620 °C with the constant strain of 0.5 %.
Shen Wenfei   +4 more
doaj   +1 more source

Stress relaxation behavior of low carbon steel at different temperatures

open access: yesMaterials Research Express, 2023
In this paper, the stress relaxation behavior of Q235 with the initial tensile stress of 70, 85 and 100 MPa were investigated at different temperature. Based on the thermal activation theory, the stress relaxation model of Q235 steel was established, and
Shanchao Zuo   +6 more
doaj   +1 more source

Transverse relaxation characteristic and stress relaxation model considering molecular chains of HTPB coating based on pre-strained thermal aging

open access: yesDefence Technology, 2021
In order to accurately describe the transverse relaxation characteristic and stress relaxation modulus of HTPB coating during pre-strain thermal aging process, a one month thermal aging test was carried out at 70 °C with pre-strain of 0%, 3%, 6% and 9 ...
Yong-qiang Du   +3 more
doaj   +1 more source

Growing length and time scales in a suspension of athermal particles

open access: yes, 2009
We simulate a relaxation process of non-brownian particles in a sheared viscous medium; the small shear strain is initially applied to a system, which then undergoes relaxation. The relaxation time and the correlation length are estimated as functions of
D. N. Zubarev, Takahiro Hatano
core   +1 more source

Dynamics of vitrimers: defects as a highway to stress relaxation [PDF]

open access: yes, 2018
We propose a coarse-grained model to investigate stress relaxation in star-polymer networks induced by dynamic bond exchange processes. We show how the swapping mechanism, once activated, allows the network to reconfigure, exploring distinct topological ...
Ciarella, Simone   +2 more
core   +3 more sources

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