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Predicting sample lifetimes in creep fracture of heterogeneous materials
- Source :
- Physical Review E. 94(2):1-6
- Publication Year :
- 2016
-
Abstract
- Materials flow - under creep or constant loads - and, finally, fail. The prediction of sample lifetimes is an important and highly challenging problem because of the inherently heterogeneous nature of most materials that results in large sample-to-sample lifetime fluctuations, even under the same conditions. We study creep deformation of paper sheets as one heterogeneous material and thus show how to predict lifetimes of individual samples by exploiting the "universal" features in the sample-inherent creep curves, particularly the passage to an accelerating creep rate. Using simulations of a viscoelastic fiber bundle model, we illustrate how deformation localization controls the shape of the creep curve and thus the degree of lifetime predictability.
- Subjects :
- Materials science
ta114
Sample (statistics)
02 engineering and technology
Mechanics
021001 nanoscience & nanotechnology
01 natural sciences
Viscoelasticity
Creep
0103 physical sciences
Fracture (geology)
Fiber bundle
Predictability
Deformation (engineering)
010306 general physics
0210 nano-technology
Constant (mathematics)
Subjects
Details
- Language :
- English
- ISSN :
- 15393755
- Volume :
- 94
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Physical Review E
- Accession number :
- edsair.doi.dedup.....334509908e33506e62cbf8a4fad29e5a