کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5018553 1467436 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization and modeling of three-dimensional self-healing shape memory alloy-reinforced metal-matrix composites
ترجمه فارسی عنوان
شناسایی و مدل سازی کامپوزیت های فلزی ماتریس تقویت شده آلیاژی حافظه شفاف سه بعدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
In this work, three-dimensional metal-matrix composites (MMCs) reinforced by shape memory alloy (SMA) wires are modeled and simulated, by adopting an SMA constitutive model accounting for elastic deformation, phase transformation and plastic behavior. A modeling method to create composites with pre-strained SMA wires is also proposed to improve the self-healing ability. Experimental validation is provided with a composite under three-point bending. This modeling method is applied in a series of finite element simulations to investigate the self-healing effects in pre-cracked composites, especially the role of the SMA reinforcement, the softening property of the matrix, and the effect of pre-strain in the SMA. The results demonstrate that SMA reinforcements provide stronger shape recovery ability than other, non-transforming materials. The softening property of the metallic matrix and the pre-strain in SMA are also beneficial to help crack closure and healing. This modeling approach can serve as an efficient tool to design SMA-reinforced MMCs with optimal self-healing properties that have potential applications in components needing a high level of reliability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics of Materials - Volume 103, December 2016, Pages 1-10
نویسندگان
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