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2020 | OriginalPaper | Chapter

Dynamic Speckle Contrast Imaging for Surface Defect Detection

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Abstract

We propose to explore the dynamic speckle contrast imaging (DSCI) modality for non-contact surface defect detection. In this approach, the object under investigation is subjected to a continuous and monotonic loading. A number of speckle images are recorded during the continuous deformation of object surface. Speckle contrast analysis algorithm is applied to the stack of images which utilizes the fact that the variations on the object surface is reflected in significant changes in the speckle intensity variations. A simulation study was performed with the speckle images and with specklegrams recorded in the speckle interferometry and Shearographic setup. The results motivate the applicability of the DSCI technique in surface defect detection.

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Metadata
Title
Dynamic Speckle Contrast Imaging for Surface Defect Detection
Authors
Rishikesh Kulkarni
Shanta Patil
Pramod Rastogi
Copyright Year
2020
DOI
https://doi.org/10.1007/978-3-030-47883-4_13

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