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ASE 324L Laboratory #5 High Temperature Creep and Creep Rupture Amber Mueller February 28, 2008
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1. a) Creep-Time Curve 0 0.1 0.2 0.3 0.4 0.5 0.6 0 200 400 600 800 1000 1200 Time (hours) Unit Creep Strain 3000 5000 8000 11000 b) slope = change in strain/change in time slope at 500 0.000005 0.000015 0.00003 0.000315 slope at 700 0.00001 0.00002 0.000045 0.000325 slope at 900 0.00001 0.000015 4.5E-05 0.000435 Minimum creep rate = average slope creep rate 8.33333E-06 1.66667E-05 0.00004 0.00035833 c) log stress 0.477121 0.69897 0.90309 1.041393 log strain -5.07918 -4.77815 -4.39794 -3.44571 y = 2.6739x - 6.5113 -5.5 -5 -4.5 -4 -3.5 -3 0.35 0.45 0.55 0.65 0.75 0.85 0.95 1.05 log stress log strain Slope = n = 2.6739 Intercept = log(B) = -6.5113 B=10^-6.5113 = 3.083E-07
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3. Temp (deg C) Stress (MPa) Rupture Time (hr) P (C=20)
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Unformatted text preview: 650 1000 12 19.45925 650 950 56 20.07684 650 895 165 20.51007 650 840 479 20.93735 650 820 319 20.77437 650 790 504 20.95775 705 815 23 20.89497 705 695 110 21.55979 705 635 254 21.91529 705 590 478 22.18388 760 600 28 22.15813 760 515 62 22.51481 760 440 291 23.20857 760 415 390 23.33996 815 460 15 23.04276 815 395 47 23.58249 815 345 91 23.89473 815 260 379 24.56895 815 220 773 24.90577 870 260 33 24.59889 870 215 73 24.99306 870 180 196 25.48339 870 145 300 25.69472 900 170 69 25.62025 900 140 163 26.05823 900 105 738 26.82766 Larson-Miller Plot 200 400 600 800 1000 1200 19 20 21 22 23 24 25 26 27 T(20+logt) *10^3 (deg K-hr) Stress (MPa)...
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This note was uploaded on 03/19/2008 for the course ASE 324L taught by Professor Leichti during the Spring '08 term at University of Texas at Austin.

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report - 650 1000 12 19.45925 650 950 56 20.07684 650 895...

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