³í¹®¸í |
°ÀçÀÇ °íÁÖ±â ÇǷνÃÇè ÃÖÀûȸ¦ À§ÇÑ ¾Ë°í¸®Áò ¹× ¼ÒÇÁÆ®¿þ¾î °³¹ß / Development of the Algorithm and Software for Optimized S-N Fatigue Test of Structural Steels |
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Çѱ¹°±¸Á¶ÇÐȸ ³í¹®Áý, Vol.30 No.3 (2018-06) |
ÆäÀÌÁö |
½ÃÀÛÆäÀÌÁö(137) ÃÑÆäÀÌÁö(8) |
ÁÖÁ¦¾î |
ÇǷνÃÇè ; °Àç ; S-N °ü°è ; S-N °î¼± ÃßÁ¤ ; ÇǷΰµµ ; ÇÇ·Î ¼ÒÇÁÆ®¿þ¾î ; Fatigue Test ; Steel ; S-N Relationship ; S-N Curve Prediction ; Fatigue Strength ; Fatigue Software |
¿ä¾à1 |
°±¸Á¶¹°Àº ÀϹÝÀûÀ¸·Î ¼³°è ´Ü°è»Ó¸¸ ¾Æ´Ï¶ó À¯Áö°ü¸® ´Ü °è¿¡¼µµ ÇÇ·Î °ËÅ並 ÇÑ´Ù. ÀÌ·¯ÇÑ ÇÇ·Î °ËÅ並 À§Çؼ´Â S-N°î¼±À» ÀÌ¿ëÇϹǷΠ±¸Á¶¹°ÀÇ º¸´Ù Á¤È®ÇÑ ÇÇ·Î Æò°¡¸¦ À§Çؼ´Â ¼ÒÀçÀÇ S-N °ü°è Æò°¡°¡ Àß ÀÌ·ç¾îÁ®¾ß ÇÑ´Ù. ±Ý¼ÓÀç·áÀÇ ÇǷνÃÇèÀ» À§ÇÑ ±Ô°ÝÀÌ ±¹³»¡¤¿Ü¿¡ ¸¶·ÃµÇ¾î ÀÖÀ¸³ª, ´Ù·®ÀÇ ½ÃÆíÀ» ÀÌ¿ëÇÏ¿© ¼öÇàµÇ´Â ÀÏ·ÃÀÇ ÇǷνÃÇè¿¡¼ ¾î´À Á¤µµÀÇ ÀÀ·Â ¼öÁØÀ¸·Î ½ÃÇèÇؾßÇÒÁö °áÁ¤ÇÏ´Â °ÍÀº ½ÃÇèÀÚÀÇ ÆÇ´Ü¿¡¸¸ ÀÇÁ¸ÇÑ´Ù. º» ¿¬±¸´Â ±Ý¼ÓÀç·áÀÇ ÇǷνÃÇèÀ» ÀÏ°üµÈ ÀýÂ÷¿¡ µû¶ó ÁøÇàÇÒ ¼ö ÀÖµµ·Ï ¾Ë°í¸®ÁòÀ» °³¹ßÇÏ¿´´Ù. ¿¬±¸ÀÇ ¸ñÀû ´Þ¼ºÀ» À§ÇØ ±âÁ¸ ¹®ÇåÀ» Á¶»çÇÏ¿© ÇǷΰµµ ¿¹Ãø ¹æ¹ý¿¡ ´ëÇØ °ËÅäÇÏ°í, ÀÌ ¿¹Ãø ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© ½ÇÁ¦ ÇǷνÃÇè Àü S-N °î¼±À» ÃßÁ¤ÇÏ¿© ½ÃÇèÇÏÁßÀ» ¼±Á¤Çϵµ·Ï ÀýÂ÷À» °³¹ßÇÏ°í ¼ÒÇÁÆ®¿þ¾î·Î ±¸ÇöÇÏ¿´´Ù. ¸¶Áö¸·À¸·Î ½ÇÁõ½ÃÇèÀ» ¼öÇàÇÏ¿© ¼ÒÇÁÆ®¿þ¾îÀÇ À¯¿ë¼ºÀ» È®ÀÎÇÏ¿´´Ù. |
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Fatigue tests are conducted for design and(or) maintenance. For fatigue strength evaluation, accurate S-N relationship is firstly determined for metallic materials used. However, many researchers are facing difficulties in deciding a series of test loads, stress level number, stress range intervals, etc. In this study, the rational algorithm and software to conduct fatigue tests was developed. For achieving this purpose, a diversity of methods of fatigue strength estimation were studied. The fatigue software automatically presents real fatigue test results. Finally, practical use of this algorithm and software was proved through verification test. |