کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10690567 | 1019261 | 2014 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Probabilistic approaches to compute uncertainty intervals and sensitivity factors of ultrasonic simulations of a weld inspection
ترجمه فارسی عنوان
رویکردهای احتمالی برای محاسبه فواصل نااطمینی و عوامل حساس شبیه سازی اولتراسونیک بازرسی جوش
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کلمات کلیدی
سونوگرافی، بازرسی جوش، تجزیه و تحلیل میزان حساسیت، عدم قطعیت، مدل سازی عنصر محدود
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
چکیده انگلیسی
For comprehension purpose, numerical computations are more and more used to simulate the propagation phenomena observed during experimental inspections. However, the good agreement between experimental and simulated data necessitates the use of accurate input data and thus a good characterization of the inspected material. Generally the input data are provided by experimental measurements and are consequently tainted with uncertainties. Thus, it becomes necessary to evaluate the impact of these uncertainties on the outputs of the numerical model. The aim of this study is to perform a probabilistic analysis of an ultrasonic inspection of an austenitic weld containing a manufactured defect based on advanced techniques such as polynomial chaos expansions and computation of sensitivity factors (Sobol, DGSM). The simulation of this configuration with the finite element code ATHENA2D was performed 6000Â times with variations of the input parameters (the columnar grain orientation and the elastic constants of the material). The 6000 sets of input parameters were obtained from adapted statistical laws. The output parameters (the amplitude and the position of the defect echo) distributions were then analyzed and the 95% confidence intervals were determined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 54, Issue 4, April 2014, Pages 1037-1046
Journal: Ultrasonics - Volume 54, Issue 4, April 2014, Pages 1037-1046
نویسندگان
F. Rupin, G. Blatman, S. Lacaze, T. Fouquet, B. Chassignole,