کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7196016 | 1468305 | 2018 | 39 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of mode-I SIF, T-stress and J-integral using displacement data from digital image correlation - Revisited
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
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چکیده انگلیسی
J-integral evaluation is essential for elasto-plastic fracture mechanics (EPFM) studies. Curve fitting the local displacement data is necessary for J-integral evaluation and suitable polynomial function and grid size need to be selected. Theoretical study carried out in this work showed that a third order polynomial fitted to displacement data in a local grid of size 0.5â¯mm (approximately ten times the plastic zone size) gave accurate J values even for paths of small radius (closer to crack-tip) where strain gradients are very high. Using these parameters, J-integral is obtained for epoxy (brittle polymer) and polycarbonate (ductile polymer). For polycarbonate, a method has been suggested to determine the Dugdale plastic zone size from the measured J-integral and out-of-plane displacement results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 96, August 2018, Pages 146-159
Journal: Theoretical and Applied Fracture Mechanics - Volume 96, August 2018, Pages 146-159
نویسندگان
M. Subramanyam Reddy, K. Ramesh, Abhinav Thiyagarajan,