Theoretical model of the plastic zone at the I-mode crack tip in dentin / Borodin E.N., Gutkin M.Y., Mikaelyan K.N., Panfilov P. // Scripta Materialia. - 2017. - V. 133, l. . - P. 45-48.

ISSN:

13596462

Type:

Article

Abstract:

Possible mechanisms of inelastic deformation at the I-mode crack tip in dentin are theoretically studied. We consider the relative shear of collagen fibers in their nodes without breaking intermolecular bonds, the detachment of collagen fibers from each other in the nodes, and tearing of the individual fibers. For each of these mechanisms, we estimate the size of the plastic zone near the crack tip and show that the detachment of collagen fibers is the easiest mechanism of inelastic deformation. Our estimates are in agreement with electron microscopy observations. © 2017 Acta Materialia Inc.

Author keywords:

Dentin; Fracture; Plastic deformation; Porous material; Transmission electron microscopy (TEM)

Index keywords:

Collagen; Crack propagation; Cracks; Electron microscopy; Fibers; Fracture; High resolution transmission electron microscopy; Plastic deformation; Porous materials; Transmission electron microscopy; C

DOI:

10.1016/j.scriptamat.2017.02.0

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85013059385&doi=10.1016%2fj.scriptamat.2017.02.007&partnerID=40&md5=288a2dd50dd8023f169acffaa85d8a71

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Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-85013059385&doi=10.1016%2fj.scriptamat.2017.02.007&partnerID=40&md5=288a2dd50dd8023f169acffaa85d8a71
Affiliations	Department of Physics, Institute of Natural Sciences, Ural Federal University, 620002 Mira str., 19, Ekaterinburg, Russian Federation; Department of Physics, Chelyabinsk State University, 454001 Br. Kashirinykh str., 129, Chelyabinsk, Russian Federation; Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, Bolshoj 61, Vasil. Ostrov, St. Petersburg, Russian Federation; Department of Mechanics and Control Processes, Peter the Great St. Petersburg Polytechnic University, Polytekhnicheskaya 29, St. Petersburg, Russian Federation; ITMO University, Kronverkskiy pr. 49, St. Petersburg, Russian Federation
Author Keywords	Dentin; Fracture; Plastic deformation; Porous material; Transmission electron microscopy (TEM)
Funding Details	15-19-10007, RSF, Russian Science Foundation
Funding Text	This work was supported by the Russian Science Foundation (grant No. 15-19-10007). The authors would also like to thank Dr. Zaoli Zhang (Erich Schmid Institute of Materials Science, Leoben, Austria) for his help in TEM study of cracks in dentin.
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Correspondence Address	Gutkin, M.Y.; Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, Bolshoj 61, Vasil. Ostrov, Russian Federation; email: m.y.gutkin@gmail.com
Publisher	Elsevier Ltd
CODEN	SCMAF
Language of Original Document	English
Abbreviated Source Title	Scripta Mater
Source	Scopus