Standing wave effect and fractal structure in dislocation evolution

Standing wave effect and fractal structure in dislocation evolution

Abstract Theoretical model required for the evolution of regular dislocation pattern should simultaneously take into account both static distribution and dynamic evolution of dislocation pattern. In principle, there exists a stable uniformly moving dislocation with both core and far field advancing...

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Autores principales: P. Li, Z. F. Zhang
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
Materias:
Medicine
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Science
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Acceso en línea:https://doaj.org/article/402ebbc8034f411da7cb6507d2910083
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spelling oai:doaj.org-article:402ebbc8034f411da7cb6507d29100832021-12-02T15:05:47ZStanding wave effect and fractal structure in dislocation evolution10.1038/s41598-017-04257-92045-2322https://doaj.org/article/402ebbc8034f411da7cb6507d29100832017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04257-9https://doaj.org/toc/2045-2322Abstract Theoretical model required for the evolution of regular dislocation pattern should simultaneously take into account both static distribution and dynamic evolution of dislocation pattern. In principle, there exists a stable uniformly moving dislocation with both core and far field advancing at the same constant velocity, which suggests the existence of the traveling waves representing moving dislocation. Therefore, one new term “dislocation wave” is defined by simultaneously consisting of both an elastic wave and a dislocation in each wavefront. According to the standing wave effect, the edge dislocation segments capture mutually to form the periodic ladder structures at the nodes. These persistent slip band (PSB) ladders are not only self-organized but also self-similar dislocation patterns. The fractal dimension further reveals the intrinsic nature of crack initiation and propagation along slip bands and deformation bands.P. LiZ. F. ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
P. Li
Z. F. Zhang
Standing wave effect and fractal structure in dislocation evolution
description Abstract Theoretical model required for the evolution of regular dislocation pattern should simultaneously take into account both static distribution and dynamic evolution of dislocation pattern. In principle, there exists a stable uniformly moving dislocation with both core and far field advancing at the same constant velocity, which suggests the existence of the traveling waves representing moving dislocation. Therefore, one new term “dislocation wave” is defined by simultaneously consisting of both an elastic wave and a dislocation in each wavefront. According to the standing wave effect, the edge dislocation segments capture mutually to form the periodic ladder structures at the nodes. These persistent slip band (PSB) ladders are not only self-organized but also self-similar dislocation patterns. The fractal dimension further reveals the intrinsic nature of crack initiation and propagation along slip bands and deformation bands.
format article
author P. Li
Z. F. Zhang
author_facet P. Li
Z. F. Zhang
author_sort P. Li
title Standing wave effect and fractal structure in dislocation evolution
title_short Standing wave effect and fractal structure in dislocation evolution
title_full Standing wave effect and fractal structure in dislocation evolution
title_fullStr Standing wave effect and fractal structure in dislocation evolution
title_full_unstemmed Standing wave effect and fractal structure in dislocation evolution
title_sort standing wave effect and fractal structure in dislocation evolution
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/402ebbc8034f411da7cb6507d2910083
work_keys_str_mv AT pli standingwaveeffectandfractalstructureindislocationevolution
AT zfzhang standingwaveeffectandfractalstructureindislocationevolution
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