Lab 2 3 page

At higher temperature, strength and strain hardening are increased, whereas, ductility is decreased which permits greater plastic deformation True False O Saaly i The strength constant (C) is increased with increasing of temperature True O False O The metal is becoming weaker as strain increases, this is because of .strain hardening (work hardening) property True O False O ly The engineering stress and strain are defined relative to the instantaneous area and length of test specimen True O False O In sheetmetal working processes, the surface area-to-volume ratio of .w.p. is low True O False O aly ihi Determine the value of the strain-hardening exponent for a metal that will cause the average flow stress to be 70% of the final flow stress after deformation 0.444 0.421 0.422 0.428 aaly i For pure copper (annealed), the strength coefficient = 330 MPa and strain-hardening exponent = 0.52 in the flow curve equation. Determine the average flow stress that the metal experiences if it is…

Flag question You have been given the following test sample data following mechanical testing of 15 test pieces of a modified Alumina. What is the Weibull modulus of this material? Would you advise the use of this material over one with a Weibull Modulus of 19.6 and a mean failure stress of 270 MPa, if you anticipate that the peak stress on the material could be 255 MPa? Sample 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Select one or more: Failure Stress (MPa) 297 293 270 300 260 286 265 295 4 293 280 288 263 290 298 275

At higher temperature, strength and strain hardening are increased, whereas, ductility is decreased which permits greater plastic .deformation True O False O .The strength constant (C) is increased with increasing of temperature True O False O The metal is becoming weaker as strain increases, this is because of .strain hardening (work hardening) property نقطة واحدة True O False O The engineering stress and strain are defined relative to the .instantaneous area and length of test specimen True O False aaly ihi In sheetmetal working processes, the surface area-to-volume ratio of .w.p. is low True O False ialy ihii Determine the value of the strain-hardening exponent for a metal that will cause the average flow stress to be 70% of the final flow stress after .deformation 0.444 0.421 0.422 0.428 aals i For pure copper (annealed), the strength coefficient = 330 MPa and strain-hardening exponent = 0.52 in the flow curve equation. Determine the average flow stress that the metal experiences…

Define the given terms related to mechanical properties of materials.  1.  elastic material 2. Apparent Viscosity 3. Bend test 4. Bingham Plastic 5. Dilatant

Answer Part b

Test Specimen 4140 CF steel 6061 T6 Al Gray Cast iron 40 FC Brass 360 Impact Energy (J or ft-lb) 48.5 ft-lb 25 ft-lb 12 ft-lb 27 ft-lb Impact Strength (J/m or ft-lb/in) 123.096 ft-lb/in 63.452 ft-lb/in What is the final analysis/ overall observation from the data? 30.457 ft-lb/in 68.528 ft-lb/in

You have been given the following test sample data following mechanical testing of 15 test pieces of a modified Alumina. What is the Weibull modulus of this material? Would you advise the use of this material over one with a Weibull Modulus of 19.6 and a mean failure stress of 270 MPa, if you anticipate that the peak stress on the material could be 255 MPa? Sample 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Select one or more: a. 185 b. No Yes □d. 49 □e. 28.6 3.7 Failure Stress (MPa) 297 293 270 300 g. 22.8 260 296 265 295 280 288 263 290 298 275

1. A tensile test was conducted on a metal "505" specimen and the following stress-strain curves were generated, both curves generated from the same set of data. Use the graphs to fill in the mechanical properties of the material tested in the box below. Don't forget units! Stress vs Strain Stress, psi Stress, psi 80000 70000 60000 50000 40000 30000 20000 10000 0 0.00 80000 70000 60000 50000 40000 30000 20000 10000 0.02 0 0.000 0.002 0.04 0.004 0.06 0.006 0.08 0.10 Strain Stress vs Strain 0.008 0.12 Elastic Modulus, E: 0.2% Offset Yield Strength, oo: Tensile Strength, ou: Breaking Strength, of: % Elongation: 0.14 0.010 0.012 0.014 Strain 0.16 0.18 0.016 0.018 0.20 0.020

Mark the following points on an Engineering Stress-Strain curve. Plastic limitElastic limitFracture strengthYield strengthUltimate tensile strength

MENG222 Strength of Materials Please please I'm begging you help me in this problem Need to include sample calculations, solved. Tabulate/mention the given data and what is supposed to be obtained and how. All thank and appreciation ?? ?

I need the answer as soon as possible

Is the bulk modulus used to measure the stiffness of a volume of material?

Question 5: The graph below gives a plot of force versus total sample length in a tensile test of a polymer. The sample is cylindrical, with an initial diameter of 1 cm and an initial length of 10 cm. From the data below, calculate the modulus, yield stress, yield strain, tensile strength, and % elongation. 1200 800 10 12 13 14 15 Lensth (cm) Force (N)

Typical engineering stress change

Name of a report STRENGTH OF MATERIALS LABORATORY COMPRESSION TEST Hi sir, I know your precious time will be taken, please get a report. I want you to explain to me one or two pages is enough for me, dear sir, by solving the last schedule, may God help you and grant you God bless you

Figure 1 shows the tensile testing results for different materials. All specimens have an initial diameter of 12 mm and an initial gauge length of 50 mm. 300 250 Low carbon steel Network polymer 200 Crystalline polymer 150 Amorphous polymer 100 50 5 10 15 20 25 30 Strain (%) Figure 1: Stress-strain curve b. Determine the following parameters for each material: • the tensile strength the 0.2% offset yield strength the modulus of elasticity • the ductility Stress (MPa) LO

Question 1 You are working on a design team at a small orthopaedic firm. You have been asked to select a cobalt- chrome-molybdenum (CoCr) material that will not experience plastic deformation under a specific mechanical test, as follows... A tensile stress is applied along the long axis of a solid cylindrical rod that has a diameter of 10 mm. An applied load of some magnitude F produces a 7x10³ mm change in diameter (see figure below, original shape is blue, elongated shape is unshaded). Q1H: Provide a brief rationale based on calculations used to support your answer. That is, how would you explain the behavior of the "new alloy" material to your design team? Table of properties: Assume Poisson's ratio is 0.3 for all materials Process Elastic Modulus (GPa) Material CoCr F75 As cast/Annealed 210 CoCr F90 Hot forged New alloy Z X ↑ F df O 210 110 Yield Strength (MPa) 450-517 900-1200 600 Tensile Strength (MPa) 655-890 1400-1600 700

Question 1 You are working on a design team at a small orthopaedic firm. You have been asked to select a cobalt- chrome-molybdenum (CoCr) material that will not experience plastic deformation under a specific mechanical test, as follows... A tensile stress is applied along the long axis of a solid cylindrical rod that has a diameter of 10 mm. An applied load of some magnitude F produces a 7x10³ mm change in diameter (see figure below, original shape is blue, elongated shape is unshaded). Q1C-D: Using the table of material properties below, calculate the magnitude of stress (o) and applied load (F) required to produce the 7x10-³ mm change in diameter for rods fabricated from F75 CoCr alloy (as cast) and F90 CoCr alloy (hot forged) materials.

Question 1 You are working on a design team at a small orthopaedic firm. You have been asked to select a cobalt- chrome-molybdenum (CoCr) material that will not experience plastic deformation under a specific mechanical test, as follows... A tensile stress is applied along the long axis of a solid cylindrical rod that has a diameter of 10 mm. An applied load of some magnitude F produces a 7x10-³ mm change in diameter (see figure below, original shape is blue, elongated shape is unshaded). Q1G: If your design required using the new material to create a wire, what is the largest diameter that would lead to ductile behavior while still avoiding plastic deformation when exposed to the above loading conditions?

If material A is observed to have twice the modulus of rigidity but the same Poisson's ratio and yield shear stress than that of material B, then which of the following comparisons is always true? Select one: Material A can resist higher normal stresses than material B can before permanent normal deformations occur. O b For the same load that brings the materials to plastic behavior, material A will experience larger permanent shear deformations than material B. Material A can resist higher shear stresses than material B before permanent shear deformations occur. O d. Material B is has a lower ultimate stress than material A.

10. A standard steel specimen of 0.504" diameter elongated 0.0125" in an 8" gage length during a test where it was subjected to a tensile force of 6249 lb. If the specimen's gage length was measured to be 8.0025" after the test was over, what was the permanent plastic deformation? What is the elastic deformation and what is the modulus of elasticity of that metal? r PL AE

which is correct? 53.2 mm , 1.1 mm , 121.4 mm, 22.2 mm ,11.1 mm

The graph below gives a plot of force versus total sample length in a tensile test of a polymer. The sample is cylindrical, with an initial diameter of 1 cm and an initial length of 10 cm. From the data below, calculate the modulus, yield stress, yield strain, tensile strength, and % elongation.

6. State your answers to the following questions.Strain Gauge represents the deformation of a material through a change in resistance. If so, explain how temperature will affect the strain gauge in the experimental environment.①:In this experiment, the Strain Gauge measures the strain in micro units. Explain one possible error factor when applying a load by hanging a weight on the material with the strain gauge attached. (Hint: It is easy to shake by hanging the weight using a thread)①:

Don’t use ai pls