Results 41 to 50 of about 856,791 (193)

Multivariate Prediction Model of Strength and Acoustic Emission Energy considering Parameter Correlation of Coal or Rock

open access: yesAdvances in Materials Science and Engineering, 2020
Due to the heterogeneity of the internal structure and the different external loading conditions, the mechanical and acoustic emission (AE) characteristic parameters of coal and rock are discrete in the process of loading until failure, and many repeated
Shuncai Li, Daquan Li, Nong Zhang
doaj   +1 more source

Bond Behavior Between Steel Bar and Reactive Powder Concrete Under Repeated Loading

open access: yesBuildings
To investigate the influence of repeated loading on the bond behavior between steel bars and reactive powder concrete (RPC), this study conducted repeated loading tests on eight beam specimens and one static loading test as a control.
Dewen Zhang   +5 more
doaj   +1 more source

Experimental Studies on the Elastic-Plastic Behavior of Braced Frames under Repeated Horizontal Loading. Part 1 Experiments of Braces with an H-shaped Cross Section in a Frame [PDF]

open access: yes, 1977
An experimental study is conducted to obtain the hysteretic characteristics of the brace itself in a braced frame under repeated loading. Braces with an H-shaped cross section are tested in a single or a double bracing system.
NAKAMURA, Takeshi   +2 more
core  

A repeated strike loading organ culture model for studying compression-associated chronic disc degeneration

open access: yesBiomolecules & Biomedicine
Mechanical stress has been viewed as one of the key risk factors in accelerating the intervertebral disc degeneration process. The goal of the present study was to employ a repeated strike loading bovine caudal disc system to elucidate the ...
Baoliang Li   +10 more
doaj   +1 more source

A study of repeated impact loading on a symmetrical carbon fibre laminate [PDF]

open access: yes, 2007
The behaviour of a symmetric laminate under repeated low energy hits of a 12.1mm hemispheric impactor was evaluated. The laminate was able to endure 20 collisions with the striker before perforation. The rate of damage progression was characterised by an
Banks, W.M.   +2 more
core  

Biomechanical Tolerance of Whole Lumbar Spines in Straightened Posture Subjected to Axial Acceleration [PDF]

open access: yes, 2017
Quantification of biomechanical tolerance is necessary for injury prediction and protection of vehicular occupants. This study experimentally quantified lumbar spine axial tolerance during accelerative environments simulating a variety of military and ...
Baisden, Jamie L.   +9 more
core   +2 more sources

PrasugRel versus adjusted high-dose clopidogrel in patients with high on- clopidogrel platelet reactivity: the PECS-HPR randomized, multicenter study [PDF]

open access: yes, 2015
background: Repeated loading doses (LD) of clopidogrel were shown to effectively overcome high on-clopidogrel platelet reactivity (HPR); however, comparison to potent P2Y12-inhibitors is lacking.
Aradi, Dániel
core   +1 more source

A dissipated energy comparison to evaluate fatigue resistance using 2PB [PDF]

open access: yes, 2012
Flexural fatigue due to repeated traffic loading is a process of cumulative damage and one of the main failure modes of flexible pavement structures. Typically, micro-cracks originate at the bottom of an asphalt concrete layer due to horizontal tensile ...
AIREY G   +4 more
core  

Muscle oxygenation maintained during repeated-sprints despite inspiratory muscle loading.

open access: yesPLoS ONE, 2019
A high work of breathing can compromise limb oxygen delivery during sustained high-intensity exercise. However, it is unclear if the same is true for intermittent sprint exercise.
Ramón F Rodriguez   +3 more
doaj   +1 more source

Repeated Loading of Cohesive Soil – Shakedown Theory in Undrained Conditions

open access: yesStudia Geotechnica et Mechanica, 2015
The development of industry and application of new production techniques could bring about extraordinary problems that have been neglected. One of these challenges in terms of soil mechanics is high frequency cyclic loading.
Głuchowski Andrzej   +2 more
doaj   +1 more source

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