Question

QUESTION 3 The estimated actual endurance strength for SAE 5160 OQT 1300 steel machined rod with a diameter of 20 mm is 219 MPa. Mean stress is 300 MPa. Design factor is 3. Define the Yield Line, Goodman line, Safe stress line by identifying the end points values for each line on the chart shown below. - Yield line Goodman line Safe stress line Safe zone Tensile strength Yield strength Ductility (percent Material Brinell

Answer 1

Given.- material. SAE 5160 OQ+ 1300 steel Syt?) a yield strength Sut as rutinate strength - sxp, as appocoable stress yield line sees enluranie strength 19 syttbl not . Goodmiann line safet zone t son 4 (Sutio Gillena Se=21ampa factor n = 300mpa LO-KIT for Material SAE 5160 0Q+ 1300 steel Yield strength syt = 275 mpa ufinate strength sut = 724 mpa design strength ser a que = sida. oas stress amplitude ore mean stress. » willit om at the cores sut 200 720 2) a= -17.745 mpa :

e gield line is one of the late on » Tuotteet $Yied line 2) a Good mann line is for -> Goocl no Good runa line Se 300 7251 - 214 3! -> 6909ckroanghine safe stress a safe stress line with line is llel to goodlinann's factor of safety 3 safe region line z; slope of Good mann's line a slope of soft region Se-O -S2 724 tsx D 21a - ses 7) Sx8 219 = 724sy. a) workit from fig. sy=ses sacs Sat » sy = 249 : Empa , 5x274, 2133mpa safevegian eine 300 vegic