کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8130450 1523204 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analytical and numerical modeling of non-collinear shear wave mixing at an imperfect interface
ترجمه فارسی عنوان
مدل سازی تحلیلی و عددی مخلوط کردن موج برشی غیر همجواری در یک رابط ناقص
کلمات کلیدی
اختلاط موج برشی، غیر خطی، رابط کاربری نامناسب روش اختلال، روش عنصر محدود
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
چکیده انگلیسی
Non-collinear shear wave mixing at an imperfect interface between two solids can be exploited for nonlinear ultrasonic assessment of bond quality. In this study we developed two analytical models for nonlinear imperfect interfaces. The first model uses a finite nonlinear interfacial stiffness representation of an imperfect interface of vanishing thickness, while the second model relies on a thin nonlinear interphase layer to represent an imperfect interface region. The second model is actually a derivative of the first model obtained by calculating the equivalent interfacial stiffness of a thin isotropic nonlinear interphase layer in the quasi-static approximation. The predictions of both analytical models were numerically verified by comparison to COMSOL finite element simulations. These models can accurately predict the additional nonlinearity caused by interface imperfections based on the strength of the reflected and transmitted mixed longitudinal waves produced by them under non-collinear shear wave interrogation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 65, February 2016, Pages 165-176
نویسندگان
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