A softening-healing law for self-healing quasi-brittle materials

Analyzing with strong discontinuity embedded approach

authored by: Yiming Zhang, Xiaoying Zhuang
Abstract: Quasi-brittle materials such as concrete suffer from cracks during their life cycle, requiring great cost for conventional maintenance or replacement. In the last decades, self-healing materials are developed which are capable of filling and healing the cracks and regaining part of the stiffness and strength automatically after getting damaged, bringing the possibility of maintenance-free materials and structures. In this paper, a time dependent softening-healing law for self-healing quasi-brittle materials is presented by introducing limited material parameters with clear physical background. Strong Discontinuity embedded Approach (SDA) is adopted for evaluating the reliability of the model. In the numerical studies, values of healing parameters are firstly obtained by back analysis of experimental results of self-healing beams. Then numerical models regarding concrete members and structures built with self-healing and non-healing materials are simulated and compared for showing the capability of the self-healing material.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): Hebei University of Technology
Tongji University
Type: Article
Journal: Engineering Fracture Mechanics
Volume: 192
Pages: 290-306
No. of pages: 17
ISSN: 0013-7944
Publication date: 24.12.2017
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Materials Science, Mechanics of Materials, Mechanical Engineering
Electronic version(s): https://doi.org/10.1016/j.engfracmech.2017.12.018 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{2b718c583c5d4a35b0c0a5df48fb9f51,
title = "A softening-healing law for self-healing quasi-brittle materials: Analyzing with strong discontinuity embedded approach",
abstract = "Quasi-brittle materials such as concrete suffer from cracks during their life cycle, requiring great cost for conventional maintenance or replacement. In the last decades, self-healing materials are developed which are capable of filling and healing the cracks and regaining part of the stiffness and strength automatically after getting damaged, bringing the possibility of maintenance-free materials and structures. In this paper, a time dependent softening-healing law for self-healing quasi-brittle materials is presented by introducing limited material parameters with clear physical background. Strong Discontinuity embedded Approach (SDA) is adopted for evaluating the reliability of the model. In the numerical studies, values of healing parameters are firstly obtained by back analysis of experimental results of self-healing beams. Then numerical models regarding concrete members and structures built with self-healing and non-healing materials are simulated and compared for showing the capability of the self-healing material.",
keywords = "Quasi-brittle materials, Self-healing, Strong Discontinuity embedded Approach (SDA), Traction separation law",
author = "Yiming Zhang and Xiaoying Zhuang",
note = "Funding information: The authors gratefully acknowledge financial support by Alexander von Humboldt Foundation Germany , through Sofja Kovalevskaja Award, year 2015 winner Dr. Xiaoying Zhuang.",
year = "2017",
month = dec,
day = "24",
doi = "10.1016/j.engfracmech.2017.12.018",
language = "English",
volume = "192",
pages = "290--306",
journal = "Engineering Fracture Mechanics",
issn = "0013-7944",
publisher = "Elsevier BV",
}