Time evolution of damage in thermally induced creep rupture

Handle URI:
http://hdl.handle.net/10754/600023
Title:
Time evolution of damage in thermally induced creep rupture
Authors:
Yoshioka, N.; Kun, F.; Ito, N.
Abstract:
We investigate the time evolution of a bundle of fibers subject to a constant external load. Breaking events are initiated by thermally induced stress fluctuations followed by load redistribution which subsequently leads to an avalanche of breakings. We compare analytic results obtained in the mean-field limit to the computer simulations of localized load redistribution to reveal the effect of the range of interaction on the time evolution. Focusing on the waiting times between consecutive bursts we show that the time evolution has two distinct forms: at high load values the breaking process continuously accelerates towards macroscopic failure, however, for low loads and high enough temperatures the acceleration is preceded by a slow-down. Analyzing the structural entropy and the location of consecutive bursts we show that in the presence of stress concentration the early acceleration is the consequence of damage localization. The distribution of waiting times has a power law form with an exponent switching between 1 and 2 as the load and temperature are varied.
Citation:
Yoshioka N, Kun F, Ito N (2012) Time evolution of damage in thermally induced creep rupture. EPL (Europhysics Letters) 97: 26006. Available: http://dx.doi.org/10.1209/0295-5075/97/26006.
Publisher:
IOP Publishing
Journal:
EPL (Europhysics Letters)
KAUST Grant Number:
KUK-I1-005-04
Issue Date:
1-Jan-2012
DOI:
10.1209/0295-5075/97/26006
Type:
Article
ISSN:
0295-5075; 1286-4854
Sponsors:
The work is supported by TAMOP-4.2.1/B-09/1/KONV-2010-0007 project. The project is implemented through the New Hungary Development Plan, co-financed by the European Social Fund and the European Regional Development Fund. FK acknowledges the support of OTKA K84157 and of the Bolyai Janos foundation of the HAS. This work was supported by the European Commissions by the Complexity-NET pilot project LOCAT. This work was partly supported by the MTA-JSPS program, by JP-24/2009 and by the Global Research Partnership program of KAUST (KUK-I1-005-04). This work is partially supported by Grant-in-Aid for JSPS Fellows.
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Full metadata record

DC FieldValue Language
dc.contributor.authorYoshioka, N.en
dc.contributor.authorKun, F.en
dc.contributor.authorIto, N.en
dc.date.accessioned2016-02-28T06:34:32Zen
dc.date.available2016-02-28T06:34:32Zen
dc.date.issued2012-01-01en
dc.identifier.citationYoshioka N, Kun F, Ito N (2012) Time evolution of damage in thermally induced creep rupture. EPL (Europhysics Letters) 97: 26006. Available: http://dx.doi.org/10.1209/0295-5075/97/26006.en
dc.identifier.issn0295-5075en
dc.identifier.issn1286-4854en
dc.identifier.doi10.1209/0295-5075/97/26006en
dc.identifier.urihttp://hdl.handle.net/10754/600023en
dc.description.abstractWe investigate the time evolution of a bundle of fibers subject to a constant external load. Breaking events are initiated by thermally induced stress fluctuations followed by load redistribution which subsequently leads to an avalanche of breakings. We compare analytic results obtained in the mean-field limit to the computer simulations of localized load redistribution to reveal the effect of the range of interaction on the time evolution. Focusing on the waiting times between consecutive bursts we show that the time evolution has two distinct forms: at high load values the breaking process continuously accelerates towards macroscopic failure, however, for low loads and high enough temperatures the acceleration is preceded by a slow-down. Analyzing the structural entropy and the location of consecutive bursts we show that in the presence of stress concentration the early acceleration is the consequence of damage localization. The distribution of waiting times has a power law form with an exponent switching between 1 and 2 as the load and temperature are varied.en
dc.description.sponsorshipThe work is supported by TAMOP-4.2.1/B-09/1/KONV-2010-0007 project. The project is implemented through the New Hungary Development Plan, co-financed by the European Social Fund and the European Regional Development Fund. FK acknowledges the support of OTKA K84157 and of the Bolyai Janos foundation of the HAS. This work was supported by the European Commissions by the Complexity-NET pilot project LOCAT. This work was partly supported by the MTA-JSPS program, by JP-24/2009 and by the Global Research Partnership program of KAUST (KUK-I1-005-04). This work is partially supported by Grant-in-Aid for JSPS Fellows.en
dc.publisherIOP Publishingen
dc.titleTime evolution of damage in thermally induced creep ruptureen
dc.typeArticleen
dc.identifier.journalEPL (Europhysics Letters)en
dc.contributor.institutionDepartment of Theoretical Physics, University of Debrecen - H-4010 Debrecen, P.O. Box 5, Hungary, EUen
dc.contributor.institutionYukawa Institute for Theoretical Physics, Kyoto University - Kitashirakawa Oiwake-cho, 606-8502 Kyoto, Japanen
dc.contributor.institutionDepartment of Applied Physics, Graduate School of Engineering, The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, 113-8656 Tokyo, Japanen
kaust.grant.numberKUK-I1-005-04en
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