Results 31 to 40 of about 7,666,987 (279)
Experimental investigation of strain rate dependent damage mechanisms in DP1000 automotive steel [PDF]
EPJ Web of Conferences, 2021 Present study aims to investigate the effect of stress state and loading rates on the damage mechanisms in a DP1000 steel using a welldesigned series of experiments. A specimen family comprising of central hole, in-plane shear and plane strain samples is
Chandran Sarath, Verleysen Patricia
doaj +1 more source
Investigation of strain rate sensitivity of polymer matrix composites [PDF]
, 2004 Includes bibliographical references (leaves 210-219)An investigation into high strain rate behaviour of polymer composites was performed by developing a finite element model for a fibre reinforced polymer (FRP) plates impacted at varying strain rates ...
Ochola, Robert O
core +1 more source
Advances in Civil Engineering, 2023 Tunnel opening or excavation in the strain-softening rock masses primarily leads to initial stress release and rock deformation. The increasing plastic shear strain induces a nonlinear variation of dilatancy in rock masses. Therefore, tunnel stability is
Xiuling Wang
doaj +1 more source
Applied SciencesThe characterization of material behavior under intermediate deformation rates remains a major challenge, since conventional testing devices are mainly developed for either quasi-static or high strain-rate conditions.
Sara Ricci +5 more
doaj +1 more source
Additional Factors Affecting the Rate and Mechanism of Ring Opening Reaction [PDF]
مجلة التربية والعلم, 2005 The reactions of thiosulphate ion with some bromoalkylamines of structure RR'N-(CH2)n-Br, where n = 2,3,4,5 or 6 and R - R1 - H, methyl, ethyl or isopropyl, were studied kinetically in an aqueous solution at different pH, The kinetic results for these ...
Mahmoud S.Saieed
doaj +1 more source
Application of optical measurement techniques to high strain rate deformations in composite materials [PDF]
, 2010 Traditionally high strain rate material characterisations have been conducted using strain gauges and/or cross head displacements in servo-hydraulic test machines, and force transducers in split Hopkinson bar experiments.
Syngellakis, Stavros +8 more
core +1 more source
Pure rate effect on compressive strength of concrete
MATEC Web of Conferences, 2017 Dynamic Increase Factor (DIF) has been used to consider the compressive strength enhancement of concrete at the high and intermediate strain rates. However, DIF formulae suggested until now include the inertia effects as well as the rate effect because ...
Lee Sangho, Kim Kyoung-Min, Cho Jae-Yoel
doaj +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Effect of the matrix behavior on the damage of ethylene–propylene glass fiber reinforced composite subjected to high strain rate tension [PDF]
, 2012 This study investigates the origin of the strain rate effect on the mechanical behavior of a discontinuous glass fiber reinforced ethylene–propylene copolymer (EPC) matrix composite.
FITOUSSI, Joseph +2 more
core +1 more source
Degradation mechanism of the von Willebrand factor A2 domain by nattokinase
FEBS Letters, EarlyView.Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto +3 more
wiley +1 more source