Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images

机译：使用光谱相关散斑图像进行表面粗糙度测量的实验研究和参数研究

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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.

机译：通过相关实验可以有效地提取以斑点图案编码的表面粗糙度参数。在光谱相关的斑点图像的情况下，去相关度由照射在表面上的激光的波长差异引起。为了以这种方法获得准确的结果，适当的实验设计非常重要，因为该实验涉及多个参数。这里，考虑到系统中的潜在变量，介绍了使用光谱斑点相关方法进行表面粗糙度测量的实验研究和参数研究。识别误差源和影响测量精度的因素，并介绍从标准校准板样品获得的实验结果。

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来源
《Fifth International Conference on Optical and Photonics Engineering》|2017年|1044913.1-1044913.8|共8页
会议地点 Singapore(SG)
作者
P.Prabhathan; Song Chaolong; Aswin Haridas; Guru Prasad; Kelvin Chan; V.M. Murukeshan;
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作者单位

Rolls-Royce@NTU Corporate Laboratory, 65 Nanyang Drive, Nanyang Technological University,Singapore 637460;

School of Mechanical Engineering and Electronic Information, ChinaUniversity of Geosciences (Wuhan), Wuhan, China;

Rolls-Royce@NTU Corporate Laboratory, 65 Nanyang Drive, Nanyang Technological University,Singapore 637460;

Rolls-Royce@NTU Corporate Laboratory, 65 Nanyang Drive, Nanyang Technological University,Singapore 637460;

Rolls-Royce Singapore, 6 Seletar AerospaceRise, Singapore 797575;

School of Mechanical and Aerospace Engineering, 50 Nanyang Drive,Nanyang Technological University, Singapore 639798;

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原文格式 PDF
正文语种 eng
中图分类
关键词
Spectral speckle correlation; surface roughness; non-destructive testing; laser speckle;

机译：光谱斑点相关性；表面粗糙度;非破坏性测试;激光斑点;
入库时间 2022-08-26 14:02:08

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专利

1. MEASUREMENTS OF SURFACE ROUGHNESS - USE OF A CCD CAMERA TO CORRELATE DOUBLY SCATTERED SPECKLE PATTERNS [J] . Basano L., Ottonello P., Palestini V., Applied optics . 1995,第31期

机译：表面粗糙度的测量-使用CCD相机校正双散射斑点图案
2. Surface roughness mapping of large area curved aerospace components through spectral correlation of speckle images [J] . Applied optics . 2020,第16期

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3. Reply to comment: Absolute measurement of roughness and lateral-correlation length of random surfaces by use of the simplified model of image-speckle contrast [J] . Applied optics . 2003,第14期

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4. Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images [C] . P.Prabhathan, Song Chaolong, Aswin Haridas, International Conference on Optical and Photonics Engineering . 2017

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6. Nanoscale measurement of the power spectral density of surface roughness: how to solve a difficult experimental challenge [O] . Juan Francisco González Martínez, Inés Nieto-Carvajal, José Abad, 2012

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7. Surface Roughness Measurement Using Dichromatic Speckle Pattern: An Experimental Study [O] . Fujii, Hitoshi, Lit, John W.Y. 1978

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8. Experimental validation of extended image reconstruction using bispectral speckle interferometry. [R] . Lawrence, T. W., Fitch, J. P., Goodman, D. M., 1990

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Experimental investigations and parametric studies of surface roughness measurements using spectrally correlated speckle images

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