Influence of surface topology on the electrical response of many bead assemblies

Influence of surface topology on the electrical response of many bead assemblies

We propose an interpretation of the voltage creep observed in metallic grain assemblies based on the sensitivity of the electrical properties to the surface topology of the beads. From the real area of contact between adjacent beads, directly measured through the bulk resistance of a single bead, we...

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Main Authors: A. Tekaya, R. Bouzerar, V. Bourny
Format: Article
Language:English
Published: AIP Publishing LLC 2012-09-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4738952
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spelling doaj-ecb4c95bcbd44fa1be1e32c71532313a2020-11-25T00:21:45ZengAIP Publishing LLCAIP Advances2158-32262012-09-0123032108032108-810.1063/1.4738952008203ADVInfluence of surface topology on the electrical response of many bead assembliesA. Tekaya0R. Bouzerar1V. Bourny2Physique des Systèmes Complexes - Université de Picardie - UFR Sciences, 33 Rue Saint –Leu 80039 Amiens, FrancePhysique des Systèmes Complexes - Université de Picardie - UFR Sciences, 33 Rue Saint –Leu 80039 Amiens, FranceLaboratoire des Technologies Innovantes (LTI) EA3899, 02100 St-Quentin, FranceWe propose an interpretation of the voltage creep observed in metallic grain assemblies based on the sensitivity of the electrical properties to the surface topology of the beads. From the real area of contact between adjacent beads, directly measured through the bulk resistance of a single bead, we derive a simple relation between the voltage creep rate and the creep rate of the interface friction coefficient, regarded as an aging process expressing asperity creep. The likely influence of the Branly effect on the aging process is briefly discussed.http://dx.doi.org/10.1063/1.4738952
collection DOAJ
language English
format Article
sources DOAJ
author A. Tekaya
R. Bouzerar
V. Bourny
spellingShingle A. Tekaya
R. Bouzerar
V. Bourny
Influence of surface topology on the electrical response of many bead assemblies
AIP Advances
author_facet A. Tekaya
R. Bouzerar
V. Bourny
author_sort A. Tekaya
title Influence of surface topology on the electrical response of many bead assemblies
title_short Influence of surface topology on the electrical response of many bead assemblies
title_full Influence of surface topology on the electrical response of many bead assemblies
title_fullStr Influence of surface topology on the electrical response of many bead assemblies
title_full_unstemmed Influence of surface topology on the electrical response of many bead assemblies
title_sort influence of surface topology on the electrical response of many bead assemblies
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2012-09-01
description We propose an interpretation of the voltage creep observed in metallic grain assemblies based on the sensitivity of the electrical properties to the surface topology of the beads. From the real area of contact between adjacent beads, directly measured through the bulk resistance of a single bead, we derive a simple relation between the voltage creep rate and the creep rate of the interface friction coefficient, regarded as an aging process expressing asperity creep. The likely influence of the Branly effect on the aging process is briefly discussed.
url http://dx.doi.org/10.1063/1.4738952
work_keys_str_mv AT atekaya influenceofsurfacetopologyontheelectricalresponseofmanybeadassemblies
AT rbouzerar influenceofsurfacetopologyontheelectricalresponseofmanybeadassemblies
AT vbourny influenceofsurfacetopologyontheelectricalresponseofmanybeadassemblies
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