Correlation of Laser Speckle Image with Metal Surface Changes due to Corrosion Process

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

When a surface is illuminated by a laser beam, a speckle pattern will appear in the form of dark and bright spots which are randomly distributed according to the surface roughness. Hence, surface deformation will produce a different speckle pattern. This study aims to see the correlation of surface deformation with changes in speckle pattern, so that it can qualitatively estimate metal resistance and observe surface characteristics due to corrosion process. The metal used were iron and carbon steel which were immersed in 0.1 M HNO3 acid solution. Every 10 minutes period, speckle images were captured using a CMOS camera and processed using 2-D Coefficient Correlation method and Feature Extraction of GLCM. The results showed a correlation between corroded metal and speckle pattern with precision rate of 2-D Coefficient Correlation was not less than 97.3% and 91.1% for GLCM Method. Analysis of 2-D Coefficient Correlation can be used to estimate that carbon steel was more resistant than iron. Meanwhile, the GLCM contrast and homogeneity features can be used to represent changing metal surface characteristics, but it was difficult to estimate metal resistance since the type of corrosion occurred in this study was different for each type of metal.

Original languageEnglish
Title of host publicationICEEIE 2019 - International Conference on Electrical, Electronics and Information Engineering
Subtitle of host publicationEmerging Innovative Technology for Sustainable Future
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages244-249
Number of pages6
ISBN (Electronic)9781728141602
DOIs
Publication statusPublished - Oct 2019
Event2019 International Conference on Electrical, Electronics and Information Engineering, ICEEIE 2019 - Denpasar, Bali, Indonesia
Duration: 3 Oct 20194 Oct 2019

Publication series

NameICEEIE 2019 - International Conference on Electrical, Electronics and Information Engineering: Emerging Innovative Technology for Sustainable Future

Conference

Conference2019 International Conference on Electrical, Electronics and Information Engineering, ICEEIE 2019
CountryIndonesia
CityDenpasar, Bali
Period3/10/194/10/19

Keywords

  • 2-D Coefficient Correlation
  • corrosion
  • image processing
  • laser speckle

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