contributor author | Spandan Maiti | |
contributor author | Chandrashekar Shankar | |
contributor author | Philippe H. Geubelle | |
contributor author | John Kieffer | |
date accessioned | 2017-05-09T00:20:00Z | |
date available | 2017-05-09T00:20:00Z | |
date copyright | October, 2006 | |
date issued | 2006 | |
identifier issn | 0094-4289 | |
identifier other | JEMTA8-27088#595_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/133760 | |
description abstract | A numerical model to study the fatigue crack retardation in a self-healing material (, 2001, Nature, 409, pp. 794–797) is presented. The approach relies on a combination of cohesive modeling for fatigue crack propagation and a contact algorithm to enforce crack closure due to an artificial wedge in the wake of the crack. The healing kinetics of the self-healing material is captured by introducing along the fracture plane a state variable representing the evolving degree of cure of the healing agent. The atomic-scale processes during the cure of the healing agent are modeled using a coarse-grain molecular dynamics model specifically developed for this purpose. This approach yields the cure kinetics and the mechanical properties as a function of the degree of cure, information that is transmitted to the continuum-scale models. The incorporation of healing kinetics in the model enables us to study the competition between fatigue crack growth and crack retardation mechanisms in this new class of materials. A systematic study of the effect of different loading and healing parameters shows a good qualitative agreement between experimental observations and simulation results. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Continuum and Molecular-Level Modeling of Fatigue Crack Retardation in Self-Healing Polymers | |
type | Journal Paper | |
journal volume | 128 | |
journal issue | 4 | |
journal title | Journal of Engineering Materials and Technology | |
identifier doi | 10.1115/1.2345452 | |
journal fristpage | 595 | |
journal lastpage | 602 | |
identifier eissn | 1528-8889 | |
keywords | Fracture (Materials) | |
keywords | Modeling | |
keywords | Polymers | |
keywords | Fatigue cracks | |
keywords | Wedges AND Wakes | |
tree | Journal of Engineering Materials and Technology:;2006:;volume( 128 ):;issue: 004 | |
contenttype | Fulltext | |