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| Research on Pit Corrosion Ratio Computation of Aero Aluminum Alloy Material Based on Digital Processing Technique |
| Received:May 16, 2012 Revised:October 15, 2012 |
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| DOI： |
| KeyWord:aero aluminum alloy corrosion morphology image processing binarization pit corrosion ratio |
| Author | Institution |
| LIU Zhi-guo |
Qingdao Branch of Naval Aeronautical Engineering Academy，Qingdao ，China |
| ZHAO Wei-yi |
Qingdao Branch of Naval Aeronautical Engineering Academy，Qingdao ，China |
| LI Xu-dong |
Qingdao Branch of Naval Aeronautical Engineering Academy，Qingdao ，China |
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| Abstract: |
| Accelerated corrosion tests were carried out on LD2 aluminum alloy and corrosion images of the specimen of different corrosion periods were obtained. A series of digital processing technics was applied to analyze the corrosion images and the binarization corrosion images were obtained by the binary characteristic extraction. The pit corrosion ratio of LD2 specimen was calculated based on the obtained binarization corrosion image. The computation results showed that the evolvement of LD2 specimen pit corrosion ratio was better coincidence with the electrochemistry corrosion mechanism of LD2, and the calculation precision of the analysis method is highly better than the traditional pit corrosion ratio calculation method. The purpose was to provide reference for pit corrosion ratio calculation and relative analysis. |
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