dynamic strain ageing
Depth-Sensing Hardness Measurements to Probe Hardening Behaviour and Dynamic Strain Ageing Effects of Iron during Tensile Pre-Deformation
... that strain hardening behaviour and nano-hardness results are closely affected by dynamic strain ageing caused by carbon interstitial impurities, which is clearly manifested at the ...
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Influence of dynamic strain ageing on ductile fracture of a C-Mn steel
... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...
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An ageing elasto-viscoplastic model for ceramics
... called dynamic strain ageing, which was developed during the early 1990’s ([McCormick, 1988, Kubin and Estrin, 1990, Estrin and Kubin, 1991]), has shown that Portevin-Le Chatelier (PLC) effect is a ...
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Control over strain in the dynamic modulus test
... the dynamic modulus is gaining popularity because of its ability to quantify the stiffness of asphalt concrete as affected by mix type, temperature condition and rate of ...the dynamic modulus differs from ...
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Ageing and Durability of Organic Polymers
... Physical ageing 7.2.1. Physical ageing by structural relaxation (broad meaning) The two phenomena responsible for the solidification of polymers at the end of their processing operations are vitrification ...
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Ageing and durability of concrete structures
... The aim of this section is to examine, with the help of model materials, the correlation between the width of the fracture process zone observed with acoustic emission (AE)[r] ...
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Humid Ageing of Organic Matrix Composites
... 1 Introduction It is well known, for over half a century, that organic matrix composites (OMCs) can fail by ‘‘humid ageing’’, i.e. irreversible interaction with water in (atmo- spheric) vapor or liquid state. Two ...
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Water ageing of urethane dimethacrylate networks
... earliest ageing time (when mass increases quickly) and almost every week at high ageing times (when mass seemed to reach a ...water ageing, samples were dried at 50 C under vacuum, and weighted ...
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Water ageing of urethane dimethacrylate networks
... earliest ageing time (when mass increases quickly) and almost every week at high ageing times (when mass seemed to reach a ...water ageing, samples were dried at 50 C under vacuum, and weighted ...
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Accelerating ferroic ageing dynamics upon cooling
... ferroelastic strain glasses, 5 all have nanoscale heterogeneities in their corresponding ferroic order parameters (that is, the polarization, magnetization and strain, respectively) and characteristic ...
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Finite-element analysis of errors on stress and strain measurements in dynamic tensile testing of low-ductile materials
... in quantifying and correcting specimen geometry effects [2,5,12,23–33]. The specimen geometry can yield many sub-effects such as inertia, wave propagation or stress concentration effects. It is therefore of much ...
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Dynamic behavior of an aggregate material at simultaneous high pressure and strain rate: SHPB triaxial tests.
... plastic strain only increased the diameter of the ring while its height was ...and strain field and a Von Mises plasticity model without work ...circumferential strain and the confining ...
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Stress et Strain
... 10/05/17 17 Le strain • Nécessite la mesure de la CRF ou de EELV – Scanner – DiluFon de gaz – Washin washout méthode (GE) • Stress= k x Strain La pression motrice (driving p[r] ...
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Dynamic Mechanisms of the Bactericidal Action of an Al2O3-TiO2-Ag Granular Material on an Escherichia coli Strain.
... The bactericidal activity of an Al 2 O 3 -TiO 2 -Ag granular material against an Escherichia coli strain was confirmed by a culture- based method. In particular, 100% of microorganisms were permanently inactivated ...
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Social Security, Ageing and Economic Integration
... of ageing, namely the consequences of declining fertility and increasing longevity on the welfare of this economic union and of its member ...of ageing on both capital accumulation and utilities we resort ...
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Laser-Driven Ramp Compression to Investigate and Model Dynamic Response of Iron at High Strain Rates
... Figure 2. Schematic experimental set up where a Velocity Interferometer System for Any Reflector (VISAR) was used to record the target free surface. As will be shown next, the acceleration of this surface upon emergence ...
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Incremental homogenization approach for ageing viscoelastic polycrystals
... of ageing viscoelastic polycrystals: an internal variables formulation Let us consider a polycrystalline material with volume Ω containing grains with N different crystalline orientations ( r ) ...the ...
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Radiochemical ageing of poly(ether ether ketone)
... a b s t r a c t Thin (60 l m) and thick (250 l m) samples of poly(ether ether ketone) were subjected to radiochemical ageing at 24 kGy h 1 dose rate for doses up to 30.7 MGy at 60 °C in air. FTIR ...
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Strain localization analysis using a large strain self-consistent approach
... USING A LARGE STRAIN SELF- - CONSISTENT APPROACH CONSISTENT APPROACH G.Franz G.Franz 1 1 , F. , F.Abed Abed- -Meraim Meraim 1 1 , T.Ben Zineb , T.Ben Zineb 2 2 , X.Lemoine , X.Lemoine 3 3 , M.Berveiller , ...
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Dynamic tests on a cohesive and frictional material. Influence of high pressure and high strain rate on compaction and shear.
... Other tests were also worked out with the same device and with the same specimen. Only the thickness of the rings and the impact velocities were changed. These parameters have an influence on the strain rate and ...
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