Image Processing Algorithm for Real‑Time Crack Inspection in Hole
- Title
- Image Processing Algorithm for Real‑Time Crack Inspection in Hole
- Author
- 윤종헌
- Keywords
- Crack; Imaging processing; Hole expansion ratio (HER); Greyscale value; Binarization; Zinc-coating
- Issue Date
- 2019-03
- Publisher
- KOREAN SOC PRECISION ENG
- Citation
- INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING, v. 20, No. 7, Page. 1139-1148
- Abstract
- This paper mainly focuses on development of the smart crack inspection algorithm facilitating the through-thickness crack during the hole expansion test, which makes it possible to calculate the hole expansion ratio, automatically, with the image processing technique. The proposed crack inspection algorithm consists of six steps such as binarization, blob detection, background deletion, ROI selection, image linearization, and crack identification using the C# language. This algorithm is able to capture the various types of the through-thickness and double cracks irrespective of the reflectance and the initial thickness of the applied sheet materials. In addition, it is possible to keep trace of the in-plane crack and its propagation during the HER test.
- URI
- https://link.springer.com/article/10.1007%2Fs12541-019-00101-4https://repository.hanyang.ac.kr/handle/20.500.11754/121700
- ISSN
- 2234-7593; 2005-4602
- DOI
- 10.1007/s12541-019-00101-4
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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