10 October 2017 Research on surface defect detection of ceramic ball based on fringe reflection
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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.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Kai Zhang, Kai Zhang, Luhua Fu, Luhua Fu, Zhong Wang, Zhong Wang, Ying Sun, Ying Sun, Changjie Liu, Changjie Liu, } "Research on surface defect detection of ceramic ball based on fringe reflection," Optical Engineering 56(10), 104104 (10 October 2017). https://doi.org/10.1117/1.OE.56.10.104104 . Submission: Received: 18 April 2017; Accepted: 8 September 2017
Received: 18 April 2017; Accepted: 8 September 2017; Published: 10 October 2017
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