Pls help ASAP 17.A cylindrical low carbon-nickel alloy was creep tested. The original diameter was 5 mm andthe original length was 100 mm. Assume the sum of the instantaneous and primary creepelongations is 1.0 mm. The total length of the test specimen after 4,000 hours is 105 mm. Ifthe test temperature is 427 °C, determine the stress (in MPa) that the sample was exposedto. Show all workThe stress versus steady-state creep rate plot for the alloy is shown below.20030201008060427 C (800 F)4030538 C (1000 F)2010649°C (1200 F)8.10710410hSteady-state creep rate hStress (MPa)(ndot) was

To obtain the solution of the above question, first of all, we will determine the creep rate of the…

Answered: elongations is 1.0 mm. The total length…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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(SI Units) In a tensile test on a steel specimen, true strain = 0.11 at a stress of 245 MPa. When true stress = 340 MPa, true strain = 0.31. Determine the strength coefficient and the strain-hardening exponent in the flow curve equation.
To manufacture a piston with a circular cross section, an alloy steel bar is required whose length is fixed and has a value of 35 cm and must withstand a compression load of 5.2 tons. For its design, a safety factor of 4/5 is suggested with respect to the yield stress. The shear modulus for that alloy is 80 GPa.To know the resistance of this steel alloy, a compression test was carried out on a specimen of the same material, from this test the data table of stress against engineering deformation shown was obtained. Image 1 1) Calculate the increase in the diameter of the bar when the load is applied2) Define the Poisson's ratio and calculate its value
10. A torsion test shows that the shear modulus of an aluminumspecimen is 4.6 x 106psi. When the same specimen is used in atensile test, the modulus of elasticity is found to be 12.2 x 106psi. Find the Poisson’s ratio for the specimen.
The following creep data was obtained for a titanium alloy at 50 Ksi and 400 ° C. Plot the creep strain with respect to time (hours) and determine the creep rate at steady state for these test conditions. Deformation in/in Time (hous) Deformaition in/in Time(hours) 0,010 x 10-2 0,030 x 10-2 0,050 x 10-2 2 18 40 0,075 x 10-2 0,090 x 10-2 0,11 x 10-2 80 120 160
tensile test is performed to determine the parameters strength constant C and strainrate sensitivity exponent m for a certain metal. The temperature at which the test is performed = 500°C. At a strain rate = 10/s, the stress is measured at 140 MPa; and at a strain rate = 150/s, the stress = 280 MPa. (a) Determine C and m. (b) If the temperature were 600°C, what changes would you expect in the values of C and m?
For a piece of copper alloy, a standard stress test was applied to it, the following data was collected, from which a stress-strain diagram must be generated, where as data it is known that the initial diameter of the element is 0.505in. The analysis must include the following: 1.Modulus of Elasticity and modulus of resilience. 2.Percentage of elongation. 3.Percentage of area reduction. 4.Real and engineering stress at fracture. It is known that after the specimen fractures, its dimensions in terms of length and diameter are 3.014 and 0.374in, respectively.
Annealed low-carbon steel has a flow curve with strength coefficient = 80,000 lb/in2 and strain-hardening exponent = 0.25. A tensile test specimen with gage length = 2.0 in is stretched to a length = 3.5 in. Determine the flow stress and average flow stress that the metal experienced during this deformation.
2. A tensile test is performed on a bar of Dural (an aluminium alloy) of diameter 15 mm. The bar yields under a load of 30 kN and reaches a maximum load of 46 kN. Estimate the tensile yield stress and tensile strength of Dural
The strength coefficient and strain-hardening exponent of a certain test metal are 750 MPa and 0.25, respectively. A cylindrical specimen of the metal with starting diameter = 75 mm is stretched. If the average flow stress on the part is 450 MPa determine the final diameter of the specimen.
The strength coefficient and strain-hardening exponent of a certain test metal are 500MPa and 0.25 respectively. A cylindrical specimen of the metal with starting diameter = 58 mm is stretched. If the average flow stress on the part is 375 MPa determine the final diameter of the specimen.
Draw a typical stress vs strain tensile test curve for the following materials (two seperate graphs) and label the axis. A ductile metallic test specimen that is stretched to failure displaying a characteristic yield point and show the following parts on the curve. 1- Yield point 2- Ultimate Tensile Strength 3- Breaking point 4- Elastic Region 5- Plastic Region 6- Necking region
Suppose Polymethylmethacrylate (PMMA) and Polydimethylsiloxane (PDMS) have undergone tensile tests of similar settings at normal temperature and pressure conditions. With aid of a sketch, contrast their stress-strain responses.

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