Elastic Behavior of Self-Healing Composites using a Micromechanical Model

سال انتشار: 1395
محل انتشار: پنجمین کنفرانس بین المللی کامپوزیت
کد COI اختصاصی: COMPOSIT05_020
زبان مقاله: انگلیسی
تعداد مشاهده: 424

نویسندگان

Professor,Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics,School of Mechanical Engineering, Iran University of Science and Technology,Tehran ۱۶۸۴۶-۱۳۱۱۴, Iran

i Zibaei

Ph.D. Student Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics,School of Mechanical Engineering, Iran University of Science and Technology, Tehran ۱۶۸۴۶-۱۳۱۱۴, Iran

چکیده

In the present research, effects of thermal healing on the elastic behavior of self-healing composites have been investigated via a micromechanical model. Using a combined Mori-Tanaka method and classical lamination theory, composites were analyzed and the results compared with existing experimental results. The homogenization of fibersand matrix of cross-ply laminates was performed to create a single material with effective properties for the transverse and longitudinal directions of each ply. The transverse cracks are assumed as ellipsoidal inclusions with zero elastic properties. Then, the effective elastic stiffness of the damaged transverse plies was estimated as a function of the crack density. The crack healing was finally considered as a linear function of the temperature. The effective properties of the transverse and longitudinal plies were homogenized to construct the effective properties of the cross-ply laminate. The results of the model show a good agreement with the available experimental data

کلیدواژه ها

Elastic stiffness, Mori-Tanaka method, Self-healing composites, Thermal crack healing

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