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

ISSN/EISSN:

1359-6462 / нет данных

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. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Author keywords:

Porous material; Dentin; Plastic deformation; Fracture; Transmission electron microscopy (TEM) TOUGHENING MECHANISMS; DEFORMATION-BEHAVIOR; COLLAGEN FIBRILS; FRACTURE; COMPRESSION

DOI:

10.1016/j.scriptamat.2017.02.0

Web of Science ID:

ISI:000398010400011

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAY
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	TOUGHENING MECHANISMS; DEFORMATION-BEHAVIOR; COLLAGEN FIBRILS; FRACTURE; COMPRESSION
Research-Areas	Science \& Technology - Other Topics; Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Nanoscience \& Nanotechnology; Materials Science, Multidisciplinary; Metallurgy \& Metallurgical Engineering
Author-Email	m.y.gutkin@gmail.com
Funding-Acknowledgement	Russian Science Foundation {[}15-19-10007]
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.
Number-of-Cited-References	31
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	3
Journal-ISO	Scr. Mater.
Doc-Delivery-Number	EQ3YR