کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
797650 1467509 2011 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Applying the grid method and infrared thermography to investigate plastic deformation in aluminium multicrystal
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Applying the grid method and infrared thermography to investigate plastic deformation in aluminium multicrystal
چکیده انگلیسی

Two different full-field measurement techniques were used in this study to investigate the mechanical response of an aluminium multicrystal specimen subjected to a tensile test. The experimental setups corresponding to each of the two techniques are first described. Strain fields were obtained with the grid method, to which a recent image treatment procedure was applied. This procedure leads to a high spatial resolution in strain and provides an accurate description of the plasticity that occurs in grains. Heat sources were derived from temperature maps captured with an infrared camera. Some typical strain maps are shown and significant heterogeneities clearly appear. These strain maps are also compared with their numerical counterparts, obtained using a finite element package suitable for crystal plasticity. The calculation of the heat source distributions from the raw temperature maps is then addressed. The strain, displacement and heat source maps were then processed together to estimate the fraction of anelastic power converted into dissipated power. This quantity was determined over the whole gauge section of the specimen and also for three individual grains.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics of Materials - Volume 43, Issue 1, January 2011, Pages 36–53
نویسندگان
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