Defects Detection for Casting of Railway Freight Car Using X-Ray Radiography

Yong Ning Zou; Jian Wei Li; Jue Wang

doi:10.4028/www.scientific.net/AMM.80-81.951

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 80-81Defects Detection for Casting of Railway Freight...

Defects Detection for Casting of Railway Freight Car Using X-Ray Radiography

Abstract:

In order to improve detection efficiency of casting bolster and side frame of railway freight car, the method to automatically detect railway casting porosity and shrinkage cavity using watershed transformation based on X-ray digital radiography is presented. Firstly, while castings of a bolster and a side frame are scanned by 9Mev X-ray digital radiography system, the DR images are obtained. Then one of interested regions is selected in an image. Defects segmentation is implemented by using watershed transformation algorithm in this paper. Lastly, defects area and occupy rate are acquired by analyzing and computing, so that we can judge the casting quality. The experimental results show that defect regions and contours can be accurately acquired. This method has high robustness and practicality. It improves the efficiency of automated inspection of railway castings.

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Periodical:

Applied Mechanics and Materials (Volumes 80-81)

Pages:

951-955

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.80-81.951

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Online since:

July 2011

Authors:

Yong Ning Zou, Jian Wei Li, Jue Wang

Keywords:

Casting, Defect Detection, Digital Radiography, Railway Freight Car, Watershed Transformation

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