کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
744637 894395 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Roughness measurement of moving weak-scattering surface by dynamic speckle image
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Roughness measurement of moving weak-scattering surface by dynamic speckle image
چکیده انگلیسی

In order to meet the needs of in-process measurement in mechanical engineering, we proposed a dynamic speckle method (DSM) for predicting the roughness of moving weak-scattering surfaces. The statistical properties of the dynamic speckle intensity produced by the rough surface were studied. A mathematical model of the recorded dynamic speckle image is built. Then a linear relationship was established between the surface height variance and the natural logarithm of a roughness characteristic parameter extracted from the dynamic speckle image. The theoretical derivations and computer simulations demonstrate that the present method is simple in measuring principle, insensitive to the surface correlation length and resistant to the machine tool vibration, which indicates that the DSM has the potential for in-process application. Finally, an experiment was given.


► We choose the weak-scattering surface as the research object.
► We propose a new dynamic speckle method to measure the surface roughness.
► A roughness characteristic parameter is extracted from a single speckle image.
► The present method features simple measuring system and good vibration-resistance.
► The present method has the potential for in-process or on-line use.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 50, Issue 5, May 2012, Pages 668–677
نویسندگان
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