13.3 Engineering stress-strain data are given in Table P3.9 for a tension test on AISI 4140 steel tempered at 427°C. Mak

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13 3 Engineering Stress Strain Data Are Given In Table P3 9 For A Tension Test On Aisi 4140 Steel Tempered At 427 C Mak 1 (507.04 KiB) Viewed 30 times

13.3 Engineering stress-strain data are given in Table P3.9 for a tension test on AISI 4140 steel tempered at 427°C. Make a stress-strain plot of the data for strains less than 3.5%. Of Eqs. 13.1, 13.4, 13.8, and 13.12, choose the one that will best represent the data, and perform a fit to evaluate the materials constants. Add your fitted curve to the plot of the data, and comment on how well it fits the data. Table P3.9 €,% σ, MPa 8,% σ, MPa 1483 0 0 2.50 402 0.197 1492 3.28 812 0.405 1485 3.99 1198 0.595 1462 4.56 1358 0.681 1395 5.52 1403 0.732 1325 6.49 1399 0.781 1251 7.46 1406 1.010 1171 8.46 1445 1.386 1084 9.40 1466 1.823 o = Eε (0 ≤00) no 25vu nis12-229112 2.Et upit pitsien painebis (13.1) (8² % / ) % 0 = 00 E o = Eε noit (0 ≤ 00) o = (1-8) 00 + 8Eɛ (13.4) (o ≥ %0) o = Es (a) Tech zi (0 1 Jodod gainsbil (138) (b) o = H₁8¹¹1 σ 1/n xosqo (0 ≤ %) (o ≥ %) ε = &e + Ep, ε = + (13.12)