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The Measurement of the Crack in CCT Specimen Using the Image Processing Techniques
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 Title & Authors
The Measurement of the Crack in CCT Specimen Using the Image Processing Techniques
Lee, Hyun-Woo; Mun, Gi-Tae; Oh, Se-Jong; Jeong, Byung-Woo;
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 Abstract
In the analysis of fatigue crack propagation behavior, the crack length is one of the most important factors. In the test of crack propagation, compliance method is widely used to detect crack length. The measurement of surface crack length is not so easy with compliance method. In this study, the image processing technique was applied to measure the surface crack length. CCD(Charge-coupled device) camera was used to observe the crack image and the computer program to detect crack length from stored crack image was developed. CCT(Center Cracked Tension) specimen was used to compare the compliance method with the image processing technique. The crack length which detected by the image processing techniques was found to be well consistent with that from the optical measurement.
 Keywords
Crack Propagation Rates;Crack Opening Displacement Method;Image Processing Technique;Optical Measurement;
 Language
Korean
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