کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
735990 893697 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study on the digital moiré technique with circular and radial gratings
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
A study on the digital moiré technique with circular and radial gratings
چکیده انگلیسی

A digital moiré technique with circular and radial gratings is proposed to measure in-plane displacement and strain distributions of soft materials in a polar coordinate system. By introducing the coordinate-transform technique, the concentric circles and radial lines in the Cartesian coordinate system are converted to cross gratings in a polar coordinate system. Then, the digital moiré fringes are generated using logical and filter operations on the one-bit binary images. Finally, the in-plane displacement distributions are obtained by means of the four step phase-shifting procedure. Also, the measurement principles and the basic procedures of the new digital moiré technique are explained in detail. An application for rubber sheet with a single-edge crack is studied, and the experimental results show that the presented method is feasible.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 45, Issue 7, July 2007, Pages 783–788
نویسندگان
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