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Optical Engineering

Research on surface defect detection of ceramic ball based on fringe reflection
Author(s): Kai Zhang; Luhua Fu; Zhong Wang; Ying Sun; Changjie Liu
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Paper Abstract

The high-precision detection for surface defect of ceramic balls, widely used in precise bearings, is a challenging task. Due to the fact that some defects cannot be directly detected by the gray-level of images, we propose a method for surface defect detection based on fringe reflection. Based on specular characteristics of ceramic balls, this method utilizes flat screens with fringes drawn on them. If a ceramic ball is nondefective, the image, formed by reflection on its surface, presents even fringes. The distortion of fringes designed by a reverse exact ray-tracing method occurs at the defective region of ceramic balls. During experiments conducted with silicon nitride (Si3N4) ceramic balls, images are captured by a CMOS camera with high resolution and processed by specific algorithms. Experimental results demonstrate the feasibility of this method, which can be applied for high-precision detection for surface defect of ceramic balls and other objects with similar characteristics.

Paper Details

Date Published: 10 October 2017
PDF: 9 pages
Opt. Eng. 56(10) 104104 doi: 10.1117/1.OE.56.10.104104
Published in: Optical Engineering Volume 56, Issue 10
Show Author Affiliations
Kai Zhang, Tianjin Univ. (China)
Luhua Fu, Tianjin Univ. (China)
Zhong Wang, Tianjin Univ. (China)
Ying Sun, Tianjin Univ. (China)
Changjie Liu, Tianjin Univ. (China)

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