Modeling of Crack Self-Healing Kinetics

被引：6
|
作者：
Perelmuter, M. N. [1 ]
机构：
[1] Russian Acad Sci, Ishlinsky Inst Problems Mech, Moscow 119526, Russia
来源：
PHYSICAL MESOMECHANICS | 2020年 / 23卷 / 04期
基金：
俄罗斯科学基金会;
关键词：
Self-healing; Interface crack; Bridging zone; Bond rupture and recovery; Stress intensity factors; GROWTH; DAMAGE;
D O I：
10.1134/S1029959920040037
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A model based on the concept of interface crack bridging and thermofluctuation theory is proposed for analyzing the efficiency of crack self-healing in composite materials in view of three main stages: (1) crack initiation and growth under external load, (2) self-healing activation, and (3) self-healing with partial or complete bond recovery between crack faces. A system of singular integro-differential equations is derived for numerical estimations of bond tractions in bridging zones during their formation and stress intensity factors (major characteristics of crack self-healing efficiency) with account of external loads and bond tractions. Kinetic estimates are presented for the time of bond recovery during the formation of a crack bridging zone. The model is applied to an interface crack between two dissimilar materials with a self-healing adhesive.
引用
收藏
页码：301 / 308
页数：8
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