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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.12, 2009³â, pp.119-130
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»çÁúÅäÀÇ º¯Çü ÃøÁ¤À» À§ÇÑ ÃÖÀûÀÇ µðÁöÅÐ À̹ÌÁö ÇØ¼® ±â¹ý
( An Optimal Digital Image Analysis Technique for Measuring Deformation of Granular Soils ) |
| ÀåÀÇ·æ;Á¤¿µÈÆ;Á¤Ãæ±â; ¼¿ï´ëÇб³ °Ç¼³È¯°æ°øÇкÎ;°æÈñ´ëÇб³ Åä¸ñ°øÇаú;¼¿ï´ëÇб³ °Ç¼³È¯°æ°øÇкÎ;
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| ÈëÀÇ º¯ÇüÀ» ÃøÁ¤Çϱâ À§ÇØ Àû¿ëµÇ´Â À̹ÌÁö ÇØ¼® ±â¹ýÀ¸·Î´Â Particle Image Velocimetry(PIV)¿Í Digital Image Correlation(DIC)°¡ ÀÖÀ¸¸ç, ÀÌ ±â¹ýµéÀÌ ´õ¿í ³Î¸® Ȱ¿ëµÇ±â À§Çؼ´Â °¢ ±â¹ý¿¡ µû¶ó ´Ù¾çÇÑ Á¶°Ç¿¡¼ Á¤¹Ðµµ¸¦ Æò°¡ÇÏ´Â ¿¬±¸°¡ ÇÊ¿äÇÏ´Ù. º» ¿¬±¸¿¡¼´Â À̹ÌÁö ÇØ»óµµ, º¯À§ ¹× º¯Çü Á¤µµ, Çȼ¿ ÁýÇÕÀÇ Å©±â ¹× ÇØ¼® ±â¹ýÀÇ ´Ù¾çÇÑ ¿ä¼Ò¸¦ °í·ÁÇÏ¿© »çÁúÅäÀÇ º¯ÇüÀ» °üÂûÇϱ⿡ ÀûÇÕÇÑ ÃÖÀûÀÇ À̹ÌÁö ÇØ¼® ±â¹ýÀ» Á¦½ÃÇϰíÀÚ ÇÑ´Ù. °³º°¿ä¼Ò¹ý(DEM)À» ÀÌ¿ëÇÏ¿© ±¸¼ºµÈ °¡»óÀÇ »çÁúÅä À̹ÌÁö¸¦ Ȱ¿ëÇÏ¿© À̹ÌÁö ÇØ¼®À» ÇàÇÏ°í º¯À§¸¦ »êÁ¤ÇÑ ÈÄ, °³º° ¿ä¼Ò¹ýÀÇ º¯À§¿Í ºñ±³ÇÏ¿´´Ù. °¢ ¿µÇâ ¿ä¼ÒµéÀÌ Á¤È®µµ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®ÇÏ¿´°í, º¯À§ ¹× º¯Çü Á¤µµ¿¡ µû¶ó ÃÖÀûÀÇ À̹ÌÁö ÇØ¼®Á¶°ÇÀ» Á¦½ÃÇÒ ¼ö ÀÖ¾ú´Ù. |
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| To measure the soil deformation, two common techniques of the digital image analysis-Particle Image Velocimetry (PIV) and Digital Image Correlation (DIC)-have been used. To generally apply these techniques to the soils, the accuracy of these techniques should be evaluated under various conditions. In this study, the influence factors including the image resolution, the degree of displacement and deformation, the size of pixel subsets, and analysis techniques were analyzed. The deformation of an idealized particle assembly using the discrete element method was measured by the digital image analyses, and then the results were compared with the actual deformations. To conduct the optimal digital image analysis, various factors are systematically analyzed in terms of the degree of the displacement and the deformation. |
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| Ű¿öµå |
| Digital image analysis;Granular soil;Deformation measurement;Discrete element method; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.12, 2009³â, pp.119-130
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200919061726872)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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