{"id":338706,"date":"2024-06-19T22:28:29","date_gmt":"2024-06-19T21:28:29","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/%eb%a0%88%ec%9d%b4%ec%a0%80-%ed%94%8c%eb%9e%98%ec%8b%9c-%eb%b6%84%ec%84%9d-lfa\/"},"modified":"2024-06-19T22:28:29","modified_gmt":"2024-06-19T21:28:29","slug":"%eb%a0%88%ec%9d%b4%ec%a0%80-%ed%94%8c%eb%9e%98%ec%8b%9c-%eb%b6%84%ec%84%9d-lfa","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/ko\/%eb%a0%88%ec%9d%b4%ec%a0%80-%ed%94%8c%eb%9e%98%ec%8b%9c-%eb%b6%84%ec%84%9d-lfa\/","title":{"rendered":"\ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d (LFA)"},"content":{"rendered":"

\ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d(LFA)\uc740 \uc7ac\ub8cc\uc758 \uc5f4\ud655\uc0b0\ub3c4\ub97c \uce21\uc815\ud558\ub294 \uae30\uc220\ub85c, \uc9e7\uc740 \ub808\uc774\uc800 \ud384\uc2a4\ub97c \uc774\uc6a9\ud574 \uc5f4\uc774 \uc7ac\ub8cc \ub0b4\ubd80\uc5d0\uc11c \uc5b4\ub5bb\uac8c \ud37c\uc9c0\ub294\uc9c0\ub97c \ud3c9\uac00\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n

\"\ub808\uc774\uc800<\/p>\n

\ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d (LFA)<\/h2>\n

\ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d(Laser Flash Analysis, LFA)\uc740 \uc7ac\ub8cc\uc758 \uc5f4\ubb3c\uc131\uc744 \ud3c9\uac00\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uc911\uc694\ud55c \uae30\uc220 \uc911 \ud558\ub098\uc785\ub2c8\ub2e4. \uc774 \ubc29\ubc95\uc744 \ud1b5\ud574 \uc7ac\ub8cc\uc758 \uc5f4\ud655\uc0b0\ub3c4(thermal diffusivity)\ub97c \uce21\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5f4\ud655\uc0b0\ub3c4\ub294 \uc7ac\ub8cc \ub0b4\ubd80\uc5d0\uc11c \uc5f4\uc774 \ud37c\uc9c0\ub294 \uc18d\ub3c4\ub97c \ub9d0\ud569\ub2c8\ub2e4.<\/p>\n

\ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d\uc758 \uc6d0\ub9ac<\/h2>\n

LFA\ub294 \uc9e7\uc740 \ub808\uc774\uc800 \ud384\uc2a4\ub97c \uc2dc\ud5d8\ud3b8\uc758 \ud55c\ucabd \uba74\uc5d0 \uc785\uc0ac\uc2dc\ucf1c, \ubc18\ub300\ucabd \uba74\uc5d0\uc11c\uc758 \uc628\ub3c4 \ubcc0\ud654\ub97c \uce21\uc815\ud558\ub294 \ubc29\uc2dd\uc73c\ub85c \ub3d9\uc791\ud569\ub2c8\ub2e4. \uac04\ub2e8\ud788 \ub9d0\ud558\uc790\uba74, \ub808\uc774\uc800 \ud384\uc2a4\ub97c \ud1b5\ud574 \uc5f4\uc744 \ub123\uace0 \uc774 \uc5f4\uc774 \uc7ac\ub8cc \ub0b4\ubd80\ub97c \ud1b5\ud574 \uc5b4\ub5bb\uac8c \uc774\ub3d9\ud558\ub294\uc9c0\ub97c \ubcf4\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n

<\/p>\n

  • \ub808\uc774\uc800 \ud384\uc2a4\uac00 \uc2dc\ud5d8\ud3b8\uc5d0 \uc785\uc0ac\ub41c\ub2e4.<\/li>\n
  • \uc2dc\ud5d8\ud3b8\uc758 \ubc18\ub300\ucabd \uba74\uc5d0\uc11c \uc801\uc678\uc120 \uac80\ucd9c\uae30\uac00 \uc628\ub3c4 \uc0c1\uc2b9\uc744 \uce21\uc815\ud55c\ub2e4.<\/li>\n
  • \uc628\ub3c4 \uc0c1\uc2b9 \uace1\uc120\uc744 \ubd84\uc11d\ud558\uc5ec \uc5f4\ud655\uc0b0\ub3c4\ub97c \uacc4\uc0b0\ud55c\ub2e4.<\/li>\n

    <\/o1><\/p>\n

    \uad00\ub828 \uc2dd<\/h2>\n

    \uc5f4\ud655\uc0b0\ub3c4 \\( \\alpha \\)\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc2dd\uc73c\ub85c \uacc4\uc0b0\ub429\ub2c8\ub2e4:<\/p>\n

    \\[
    \n\\alpha = \\frac{L^2}{\\pi^2 t_{1\/2}}
    \n\\] <\/p>\n

    \uc5ec\uae30\uc11c,<\/p>\n

    <\/p>\n

  • \\( L \\) : \uc2dc\ud5d8\ud3b8\uc758 \ub450\uaed8<\/li>\n
  • \\( t_{1\/2} \\) : \uc0d8\ud50c\uc774 \ucd5c\ub300 \uc628\ub3c4\uc758 \uc808\ubc18\uc5d0 \ub3c4\ub2ec\ud558\ub294 \ub370 \uac78\ub9ac\ub294 \uc2dc\uac04<\/li>\n

    <\/u1><\/p>\n

    LFA\uc758 \uc7a5\uc810<\/h2>\n

    \ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d\uc758 \uc8fc\uc694 \uc7a5\uc810\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n

    <\/p>\n

  • \uace0\uc18d \uce21\uc815: \uc9e7\uc740 \uc2dc\uac04 \ub0b4\uc5d0 \uce21\uc815\uc774 \uc644\ub8cc\ub41c\ub2e4.<\/li>\n
  • \ube44\uc811\ucd09 \ubc29\uc2dd: \uc7ac\ub8cc\uc758 \ud45c\uba74\uacfc \uc9c1\uc811\uc801\uc778 \uc811\ucd09\uc774 \uc5c6\ub2e4.<\/li>\n
  • \uad11\ubc94\uc704\ud55c \uc628\ub3c4 \ubc94\uc704: \uc0c1\uc628\ubd80\ud130 \uace0\uc628\uae4c\uc9c0 \ub2e4\uc591\ud55c \uc628\ub3c4\uc5d0\uc11c \uce21\uc815 \uac00\ub2a5\ud558\ub2e4.<\/li>\n

    <\/u1><\/p>\n

    \uc751\uc6a9 \ubd84\uc57c<\/h2>\n

    \ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d\uc740 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0\uc11c \ud65c\uc6a9\ub429\ub2c8\ub2e4:<\/p>\n

    <\/p>\n

  • \uae08\uc18d \ubc0f \ud569\uae08: \uac01\uc885 \uae08\uc18d \uc7ac\ub8cc\uc758 \uc5f4\ud655\uc0b0\ub3c4 \uce21\uc815<\/li>\n
  • \uc138\ub77c\ubbf9: \uace0\uc628\uc5d0\uc11c\uc758 \uc5f4\ubb3c\uc131 \ud3c9\uac00<\/li>\n
  • \ubcf5\ud569 \uc7ac\ub8cc: \uc5ec\ub7ec \ubb3c\uc9c8\uc774 \ud63c\ud569\ub41c \ubcf5\ud569 \uc7ac\ub8cc\uc758 \ud2b9\uc131 \ubd84\uc11d<\/li>\n
  • \ubc18\ub3c4\uccb4: \uc804\uc790 \uae30\uae30\uc5d0\uc11c \uc911\uc694\ud55c \ubc18\ub3c4\uccb4 \uc7ac\ub8cc\uc758 \uc5f4 \ud2b9\uc131 \ud3c9\uac00<\/li>\n

    <\/u1><\/p>\n

    \uacb0\ub860<\/h2>\n

    \ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d(LFA)\uc740 \uc7ac\ub8cc\uc758 \uc5f4\ud655\uc0b0\ub3c4\ub97c \uc815\ud655\ud788 \uce21\uc815\ud560 \uc218 \uc788\ub294 \uac15\ub825\ud55c \ub3c4\uad6c\uc785\ub2c8\ub2e4. \ub2e4\uc591\ud55c \uc7ac\ub8cc\uc640 \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \ud65c\uc6a9 \uac00\ub2a5\ud558\uba70, \uc7ac\ub8cc\uc758 \uc5f4\uc801 \ud2b9\uc131\uc744 \uc774\ud574\ud558\ub294\ub370 \ud544\uc218\uc801\uc778 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

    \ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d(LFA)\uc740 \uc7ac\ub8cc\uc758 \uc5f4\ud655\uc0b0\ub3c4\ub97c \uce21\uc815\ud558\ub294 \uae30\uc220\ub85c, \uc9e7\uc740 \ub808\uc774\uc800 \ud384\uc2a4\ub97c \uc774\uc6a9\ud574 \uc5f4\uc774 \uc7ac\ub8cc \ub0b4\ubd80\uc5d0\uc11c \uc5b4\ub5bb\uac8c \ud37c\uc9c0\ub294\uc9c0\ub97c \ud3c9\uac00\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[124],"tags":[],"yoast_head":"\n\ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d (LFA)<\/title>\n<meta name=\"description\" content=\"\ub808\uc774\uc800 \ud50c\ub798\uc2dc \ubd84\uc11d(LFA)\uc740 \uc7ac\ub8cc\uc758 \uc5f4\ud655\uc0b0\ub3c4\ub97c \uce21\uc815\ud558\ub294 \uae30\uc220\ub85c, \uc9e7\uc740 \ub808\uc774\uc800 \ud384\uc2a4\ub97c \uc774\uc6a9\ud574 \uc5f4\uc774 \uc7ac\ub8cc \ub0b4\ubd80\uc5d0\uc11c \uc5b4\ub5bb\uac8c 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