کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
831566 908107 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new analytical method for stress intensity factors based on insitu measurement of crack deformation under biaxial tension
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
A new analytical method for stress intensity factors based on insitu measurement of crack deformation under biaxial tension
چکیده انگلیسی

A new approach for the calculation of stress intensity factors (SIF) for isotropic and orthotropic materials under biaxial tension loading was proposed in this paper. In order to determine SIF from the full-field displacement data, an asymptotic expansion of the crack tip displacement field was performed. The deforming shape and surface residual stress of the crack tip was obtained at the early extended stage of the loading process by using optical microscope and X-ray diffraction measurement. During this stage, a modified Dugdale Model, which takes into account the coupled effect at the crack tip, was proposed for the open displacement of the crack tip. In this paper, the SIFs of two types of silicon steel sheet with isotropic and orthotropic properties were calculated using the modified Dugdale Model based on the biaxial tension experimental data. From the results, it was found that analysis using the modified Dugdale Model is an effective way to evaluate SIF under biaxial stress.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 32, Issue 2, February 2011, Pages 664–670
نویسندگان
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