Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105708
Title: Surface roughness measurement of additive manufactured samples using angular speckle correlation
Authors: Dev, Kapil
A. S., Guru Prasad
H, Aswin
P, Prabhathan
Chan, Kelvin H. K.
Matham, Murukeshan Vadakke
Keywords: Additive Manufacturing
Angular Speckle Correlation
Engineering::Mechanical engineering
Issue Date: 2017
Source: Dev, K., A. S., Guru Prasad, H, Aswin., P, Prabhathan., Chan, K. H. K., & Matham, M. V. (2017). Surface roughness measurement of additive manufactured samples using angular speckle correlation. Proceedings of SPIE - Fifth International Conference on Optical and Photonics Engineering, 10449, 104492W. doi:10.1117/12.2270900
Series/Report no.: Proceedings of SPIE - Fifth International Conference on Optical and Photonics Engineering
Abstract: A speckle pattern is a direct fingerprint of surface height variation on the sample. In this paper, angular speckle correlation technique is applied to estimate surface roughness Ra of an additive manufactured sample with different surface roughness Ra values varying from 5μm to 20μm. Feasibility study is conducted to evaluate the correct incidence and the change in incidence angle for angular speckle correlation. Speckle correlation is computed from two speckle images that are recorded at two different incidence angles on the rough surface and surface roughness information is gleaned. Test results in terms of surface roughness measurement from standard calibration plate and additive layer manufactured samples are presented.
URI: https://hdl.handle.net/10356/105708
http://hdl.handle.net/10220/49562
DOI: 10.1117/12.2270900
Rights: © 2017 SPIE. All rights reserved. This paper was published in Proceedings of SPIE - Fifth International Conference on Optical and Photonics Engineering and is made available with permission of SPIE.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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