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- |Cycles to failure = 1E 3 Stress = 250 MPa 500 450 400 350 300 250 103 104 105 106 107 108 109 Cycles to failure Stress amplitude (MPa)3. A new material is being developed and tested in the lab. The column was made using the new material and was loaded to a constant axial stress of 25 MPa. The deformation is monitored over time according to the following table. The deformation is measured over a length of 250 mm. First sketch strain-time curve and describe the model. Second, determine the elastic modulus and the viscose coefficient. Time (days) Stress (MPa) Deformation (mm) 25 0.6250 1 25 0.6281 25 0.6313 3. 25 0.6344 7 25 0.6469 28 25 0.7125 180 25 1.1875 365 25 1.7656Solid shaft made of cast iron shown in the figure, T = 400 lb. It is subject to flick torque. Determine the smallest radius that will not generate strength loss according to the theory of greatest normal stress? The cast iron sample tested in tensile has a stress of 20 µm axim um.
- For a metal rod of 12 mm diameter and 22 cm length; a) When exposed to a load 2000 kg, it elongated by 1.2 mm. Find this load the actual stress in MPa and the true strain message. b) The tool diameter, which is extended by 8.3x10^-2 mm under a load of 870 kg, has been measured as 11.998 mm. Calculate the Poisson ratio of the material.The bar shown below has a constant width of 59 mm and a thickness of 17 mm. The maximum average normal stress in the bar when it is sujected to the loading shown will be: ___ MPa. Calculate your answer to 1 decimal place.Consider a metal bar 12.5 mm in diameter and 50 mm in length that is tested under uniaxial tension. The test results data are as follows: Force (kN) Final length (mm) Final diameter (mm) 122 56,14 12,19 120 62,05 11,60 114 68,57 11,03 (a) Complete the following table: Force (kN) Final length (mm) Final diameter (mm) True stress (MPa) True deformation (mm/mm) 122 56,14 12,19 120 62,05 11,60 114 68,57 11,03 (b) Determine the metal's work hardening coefficient. (c) The most likely crystal structure for this metal is?
- The tensile test was conducted on a specimen with a diameter of 0.5 inch. A strain gage was bonded to the specimen so that the strain could be obtained directly. The following data were obtained. a) create a table of stress and strain values. Plot this data points and draw the best fit straight line through them. b) what is the slope of this line? What does this value represent?(a) Determine the elastic strain when a stress of 80 MPa is applied to the model (rheological ) shown below. (b) Compute the total strain after a month (30 days). 5. 20 GPa |200 GPA.days 40 GPa | 300 GPA.daysSketch the stress-strain curve of the following tension test??? In the tension test of a metal fracture occurs at maximum load. The conditions at fracture were: A = 100 mm and L, = 60 mm, the initial values were: A = 150 mm and L. 40 mm.
- The stress-strain relationship shown in Figure P1.13 was obtained during the tensile test of an aluminum alloy specimen. Determine the following: a. Young's modulus within the linear portion b. Tangent modulus at a stress of 310 MPa c. Yield stress using an offset of 0.002 strain d. If the yield stress in part c is considered failure stress, what is the maximum working stress to be applied to this material if a factor of safety of 1.5 is used? 450 300 150 0.002 0.004 0.006 0.008 Strain, m/m FIGURE P1.13 Stress, MPaQuestion One Figure Q1 shows a stress state element in a material component. Analyse the element and calculate the principal stresses and positions of the principal planes in the component, using: 1.1 Formulae; 1.2 First principles 120 MPa 80 MPa need neat and clean handwritten solution of both parts for upvote Figure Q1. 25 MPaFollowing experimental data are obtained from tensile test of a rectangular test specimen with original thickness of 2,5 mm, gauge width of 24 mm and gauge length of 101 mm: Load (N) Elongation (mm) 0 0 24372 0,183 23008 0,315 28357 5,777 35517 12,315 27555 17,978 23750 23,865 Based on the information above; draw stress-strain diagram of the material and answer the following questions. 1-)-Determine the modulus of resilience (in N.mm/mm3) of the material. (Use at least five decimal units) 2-)- Determine the elastic energy absorption capacity (in N.mm) of that specimen. 3-)Determine the plastic energy absorption capacity (in N.mm) of that specimen.