A continuum mechanics approach to the healing efficiency of extrinsic self-healing polymers
Document Type
Article
Publication Date
1-1-2020
Abstract
Self-healing smart materials have been under extensive research and development during past decades. The recent developments in self-healing materials have resulted in a new generation of load carrying smart material systems with the ability to heal microscale to structural-scale damages. These materials are ranged from polymer matrix composites to ceramic matrix composites and from metal foams to biological materials. The self-healing agent might contribute to the load carrying capability of the system or it might only function as a glue. One may notice that the major emphasis in this field has been given to the experimental studies, and the modeling schemes for these systems are still in the development stage. To extend the applicability of the self-healing smart materials and deploy them into the industrial applications, the modeling techniques are of utmost important. Difficulties in manufacturing and testing of these new material systems can be compensated with incorporating modeling techniques such as finite element analysis. It is a state-of-the-art to accurately simulate the inelastic, damage, and healing responses of self-healing systems and then construct a virtual design laboratory for optimizing the performance of these material systems. The mechanical (ME) responses of self-healing materials can be categorized into elastic, plastic, damage, and healing deformation mechanisms. In the case of damage-healing mechanisms, the accumulation of microflaws forms damaged sites, and regardless of the type of embedded healing technology, the lost properties of the system in those damaged sites are recovered through the healing functionality. Thus physically consistent damage and healing models can be considered as basic tools to characterize the performance of self-healing materials. This chapter concerns the recent theoretical developments in the field of continuum damage-healing mechanics of self-healing materials. The mechanisms associated with the damage and healing are utilized to propose the damage and healing parameters. The evolution laws for the damage and healing processes are developed within the continuum damage healing mechanics framework and they are calibrated in accordance with the experimentally measurable properties such as changes in the elastic moduli.
Publication Source (Journal or Book title)
Self-Healing Polymer-Based Systems
First Page
425
Last Page
454
Recommended Citation
Shojaei, A., & Li, G. (2020). A continuum mechanics approach to the healing efficiency of extrinsic self-healing polymers. Self-Healing Polymer-Based Systems, 425-454. https://doi.org/10.1016/B978-0-12-818450-9.00014-3
