Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images
The surface roughness parameters encoded in a speckle pattern can be effectively extracted through correlation experiments. In the case of spectrally correlated speckle images, the degree of decorrelation arises from wavelength difference in the laser light irradiated on the surface. To obtain accur...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Online Access: | https://hdl.handle.net/10356/107502 http://hdl.handle.net/10220/49694 |
| _version_ | 1811676749926236160 |
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| author | Prabhathan, Patinharekandy Song, Chaolong Haridas, Aswin Prasad, Guru Chan, Kelvin H. K. Murukeshan, Vadakke Mataham |
| author2 | Asundi, Anand K. |
| author_facet | Asundi, Anand K. Prabhathan, Patinharekandy Song, Chaolong Haridas, Aswin Prasad, Guru Chan, Kelvin H. K. Murukeshan, Vadakke Mataham |
| author_sort | Prabhathan, Patinharekandy |
| collection | NTU |
| description | The surface roughness parameters encoded in a speckle pattern can be effectively extracted through correlation experiments. In the case of spectrally correlated speckle images, the degree of decorrelation arises from wavelength difference in the laser light irradiated on the surface. To obtain accurate results in such methodology, a proper design of experiments is important due to more than one parameter involved in the experiment. Here, experimental investigations and parametric studies of surface roughness measurements using spectral speckle correlation methodology are presented, considering the potential variables in the system. The sources of error and factors affecting the accuracy in measurement are identified and the experimental results obtained from standard calibration plate samples are presented. |
| first_indexed | 2024-10-01T02:26:26Z |
| format | Journal Article |
| id | ntu-10356/107502 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:26:26Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/1075022023-03-04T17:22:05Z Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images Prabhathan, Patinharekandy Song, Chaolong Haridas, Aswin Prasad, Guru Chan, Kelvin H. K. Murukeshan, Vadakke Mataham Asundi, Anand K. School of Mechanical and Aerospace Engineering Fifth International Conference on Optical and Photonics Engineering Rolls-Royce@NTU Corporate Laboratory Surface Roughness Engineering::Mechanical engineering Spectral Speckle Correlation The surface roughness parameters encoded in a speckle pattern can be effectively extracted through correlation experiments. In the case of spectrally correlated speckle images, the degree of decorrelation arises from wavelength difference in the laser light irradiated on the surface. To obtain accurate results in such methodology, a proper design of experiments is important due to more than one parameter involved in the experiment. Here, experimental investigations and parametric studies of surface roughness measurements using spectral speckle correlation methodology are presented, considering the potential variables in the system. The sources of error and factors affecting the accuracy in measurement are identified and the experimental results obtained from standard calibration plate samples are presented. NRF (Natl Research Foundation, S’pore) Published version 2019-08-20T06:07:27Z 2019-12-06T22:32:38Z 2019-08-20T06:07:27Z 2019-12-06T22:32:38Z 2017 Journal Article Prabhathan, P., Song, C., Haridas, A., Prasad, G., Chan, K., & Murukeshan, V. M. (2017). Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images. Proceedings of SPIE - Fifth International Conference on Optical and Photonics Engineering, 10449, 1044913-. doi:10.1117/12.2270539 0277-786X https://hdl.handle.net/10356/107502 http://hdl.handle.net/10220/49694 10.1117/12.2270539 en Proceedings of SPIE - Fifth International Conference on Optical and Photonics Engineering © 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. 8 p. application/pdf |
| spellingShingle | Surface Roughness Engineering::Mechanical engineering Spectral Speckle Correlation Prabhathan, Patinharekandy Song, Chaolong Haridas, Aswin Prasad, Guru Chan, Kelvin H. K. Murukeshan, Vadakke Mataham Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images |
| title | Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images |
| title_full | Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images |
| title_fullStr | Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images |
| title_full_unstemmed | Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images |
| title_short | Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images |
| title_sort | experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images |
| topic | Surface Roughness Engineering::Mechanical engineering Spectral Speckle Correlation |
| url | https://hdl.handle.net/10356/107502 http://hdl.handle.net/10220/49694 |
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