کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5007856 1461701 2017 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scanning schemes in white light Photoelasticity - Part I: Critical assessment of existing schemes
ترجمه فارسی عنوان
طرح های اسکن در نور سفید پدیده عکس - قسمت 1: ارزیابی انتقادی طرح های موجود
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
چکیده انگلیسی
The use of white light based Three Fringe Photoelasticity (TFP)/RGB Photoelasticity has gained importance in the recent years. With recent advances in TFP, it is possible to resolve fringe orders upto twelve. The main advantage of this technique is that it requires only a single image for isochromatic demodulation, which makes it suitable especially for problems where recording multiple images is difficult. The accuracy of isochromatic data obtained using TFP/RGB Photoelasticity is dependent on the scanning scheme used to refine the data, which is necessary to incorporate fringe order continuity. In this paper, the existing scanning schemes are critically evaluated for their ability to scan the entire model domain, influence of seed point selection and noise propagation. The scanning schemes are assessed using four problems of increasing level of geometric complexity - Circular disc under compression (simply connected), bi-axially loaded cruciform specimen with an inclined crack, a thick ring subjected to internal pressure and a finite plate with a hole (multiply connected).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 92, May 2017, Pages 129-140
نویسندگان
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