Algorithm of fatigue crack detection and determination of its tip position in optical images
| Autor: | V. V. Titkov, S. V. Panin, V. O. Chemezov, P. S. Lyubutin |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Pixel Mean squared error business.industry Optical flow Fracture mechanics Image processing 02 engineering and technology computer.file_format Mathematical morphology Condensed Matter Physics 020303 mechanical engineering & transports 0203 mechanical engineering 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Electrical and Electronic Engineering Photonics Raster graphics business Instrumentation computer Algorithm |
| Zdroj: | Optoelectronics, Instrumentation and Data Processing. 53:237-244 |
| ISSN: | 1934-7944 8756-6990 |
| Popis: | An algorithm of fatigue crack detection in optical images taken in fatigue tests of materials is proposed and tested. The algorithm is designed for automation of measurements of the crack propagation parameter and tracing the crack tip position in the course of cyclic loading for the purpose of shifting the optical system with respect to the examined sample surface to the “region of interest.” It is found that the coordinates of the image fragment containing the crack can be determined with a mean error of 1.93% of the total size of the raster. Testing of the algorithm on model images shows that the mean error of determining the crack tip position is smaller than 56 pixels. |
| Databáze: | OpenAIRE |
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