Theoretical model of the plastic zone at the I-mode crack tip in dentin

E. N. Borodin; M. Yu Gutkin; K. N. Mikaelyan; P. Panfilov

doi:10.1016/j.scriptamat.2017.02.007

Theoretical model of the plastic zone at the I-mode crack tip in dentin

E. N. Borodin, M. Yu Gutkin^*, K. N. Mikaelyan, P. Panfilov

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	45-48
Number of pages	4
Journal	Scripta Materialia
Volume	133
Early online date	20 Feb 2017
DOIs	https://doi.org/10.1016/j.scriptamat.2017.02.007
Publication status	Published - 1 May 2017

Keywords

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

Access to Document

10.1016/j.scriptamat.2017.02.007

Cite this

@article{7c2f1c40cb534dda9417f08e96180cbf,

title = "Theoretical model of the plastic zone at the I-mode crack tip in dentin",

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.",

keywords = "Dentin, Fracture, Plastic deformation, Porous material, Transmission electron microscopy (TEM)",

author = "Borodin, {E. N.} and Gutkin, {M. Yu} and Mikaelyan, {K. N.} and P. Panfilov",

year = "2017",

month = may,

day = "1",

doi = "10.1016/j.scriptamat.2017.02.007",

language = "English",

volume = "133",

pages = "45--48",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

}

TY - JOUR

T1 - Theoretical model of the plastic zone at the I-mode crack tip in dentin

AU - Borodin, E. N.

AU - Gutkin, M. Yu

AU - Mikaelyan, K. N.

AU - Panfilov, P.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - 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.

AB - 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.

KW - Dentin

KW - Fracture

KW - Plastic deformation

KW - Porous material

KW - Transmission electron microscopy (TEM)

U2 - 10.1016/j.scriptamat.2017.02.007

DO - 10.1016/j.scriptamat.2017.02.007

M3 - Article

AN - SCOPUS:85013059385

SN - 1359-6462

VL - 133

SP - 45

EP - 48

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Theoretical model of the plastic zone at the I-mode crack tip in dentin

Abstract

Keywords

Access to Document

Fingerprint

Cite this