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, Luhua Fu, Zhong Wang, Ying Sun, 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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