Problem 2 During a tensile test the gage length Lo-100 mm and the diameter d of the cross section is 12.5 mm. The follow

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Problem 2 During A Tensile Test The Gage Length Lo 100 Mm And The Diameter D Of The Cross Section Is 12 5 Mm The Follow 1 (47.34 KiB) Viewed 43 times

Problem 2 During a tensile test the gage length Lo-100 mm and the diameter d of the cross section is 12.5 mm. The following force and gage length data are collected: Force P (KN) Gage length L (mm) 0 100.00 2.0 100.0225 4.0 100.045 12.1 100.336 (0.2% yield point) Gauge marks 20.0 122.50 (Maximum load) 16.1 135.00 (just before fracture) The diameter of the cross section when necking occurred is 9.75 mm. Determine (a) the yield stress of the material, (b) the modulus of elasticity E, (c) the ultimate strength of the material, (d) the elongation (%) at break, (e) the reduction in area (%), and (f) If for this test the true stress and true strain at two (2) points in the plastic region are: 0₁ = 110 MPa, ₁0.062; 0,= 150 MPa, &z= 0.20. Determine the strength coefficient K and the strain hardening exponent n of the flow curve equation Ke