Share Email Print
cover

Proceedings Paper

Study of the surface roughness in metals with different surface finishing by two-dimensional correlation of laser speckle pattern
Author(s): Miguel Asmad; Guillermo Baldwin-Olguin; C. Maczeyzik; Fernando Mendoza Santoyo; Carlos Perez-Lopez
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In this work we use an experimental setup implemented in the Optical Physics Laboratory of PUCP, in order to study and to measure the roughness of surfaces with different surface finishing as milling, turning, etc. The measurement method is based on a two-dimensional scan of scattered light like from rough metal surface when the surface is illuminated by laser light. The light is scattered likes speckle in all space and arrives onto the CCD of a digital camera. The speckle images of rough surfaces are captured at different angles of illumination. We have analyzed the dependence between the structure of speckle and the surface roughness. Using two-dimensional Fast Fourier Transform it has been possible to compute the correlation between speckle pattern images and find out the relationship between surface roughness and speckle patterns decorrelation for different metal surface finishing.

Paper Details

Date Published: 21 October 2004
PDF: 6 pages
Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); doi: 10.1117/12.591731
Show Author Affiliations
Miguel Asmad, Pontificia Univ. Catolica del Peru (Peru)
Guillermo Baldwin-Olguin, Pontificia Univ. Catolica del Peru (Peru)
C. Maczeyzik, Pontificia Univ. Catolica del Peru (Peru)
Fernando Mendoza Santoyo, Ctr. de Investigaciones en Optica, A.C. (Mexico)
Carlos Perez-Lopez, Ctr. de Investigaciones en Optica, A.C. (Mexico)


Published in SPIE Proceedings Vol. 5622:
5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications

© SPIE. Terms of Use
Back to Top