The stress-strain tests were carried out on five different metals (A, B, C, D and E) andthe results are shown in the figure below. Select the metal for given properties.B.StrainMetalProperty(A, B, C,Dor E)Highest resistanceto plastic strainLowest stiffnessHighest ductilityHighest brittlenessHighest tensilestrengthLowest fracturestrengthi.ii.iii.iv.V.vi.Stress2.

The following characteristic is seen from the stress-strain diagram given:

The stress-strain tests were carried out on five different metals (A, B, C, D and E) and the results are shown in the figure below. Select the metal for given properties. Strain Metal Property (A, B, C, Dor E) Highest resistance to plastic strain Lowest stiffness Highest ductility Highest brittleness Highest tensile strength Lowest fracture strength ii. ii. iv. V. vi.

The stress-strain tests were carried out on five different metals (A, B, C, D and E) and the results are shown in the figure below. Select the metal for given properties. Strain Metal Property (A, B, C, Dor E) Highest resistance to plastic strain Lowest stiffness Highest ductility Highest brittleness Highest tensile strength Lowest fracture strength ii. ii. iv. V. vi.

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter6: Introduction To Mechanical Properties

Section: Chapter Questions

Problem 6.19P

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1) The stress-strain tests were carried out on five different metals (A, B, C, D and E) and the results are shown in the figure below. Select the metal for given properties. E B Strain Metal Property (А, В, С, D or E) Highest resistance i. to plastic strain Lowest stiffness Highest ductility Highest brittleness Highest tensile strength Lowest fracture strength ii. iii. iv. v. vi.
The stress-strain tests were carried out on five different metals (A, B, C, D and E) and the results are shown in the figure below. Select the metal for given properties. Stress L ii. iii. iv. V. vi. B Strain Property Highest resistance to plastic strain Lowest stiffness Highest ductility Highest brittleness Highest tensile strength Lowest fracture strength Metal (A, B, C, D or E) N
Question No.2 Figure P1.16 shows the stress-strain relations of metals A and B during ten- sion tests until fracture. Determine the following for the two metals (show all calculations and units): a. Proportional limit b. Yield stress at an offset strain of 0.002 m/m. c. Ultimate strength d. Modulus of resilience e. Toughness f. Which metal is more ductile? Why? 000 -Metal A S 600 -Metal B 300 0.00 a.02 0.04 0.06 0.08 0.10 0.12 0.14 Strain, mim FIGURE P1.16 Stress, MPa
Question No.2 Figure P1.16 shows the stress-strain relations of metals A and B during ten- sion tests until fracture. Determine the following for the two metals (show all calculations and units): a. Proportional limit b. Yield stress at an offset strain of 0.002 m/m. c. Ultimate strength d. Modulus of resilience e. Toughness I. Which metal is more ductile? Why? 900 -Metal A E 600 Metal B 300 0.00 a02 004 a.06 0.08 0.10 0.12 014 Strain, matm FIGURE P1.16 Strees, MPa
The shown figure represents the stress-strain relations of metals A and B during tension tests until fracture.Determine the following for the two metals (show all calculations and units):a. Proportional limitb. Yield stress at an offset strain of 0.002 in./in.c. Ultimate strengthd. Modulus of resiliencee. Toughnessf. Which metal is more ductile? Why?
Q1/ Consider the brass alloy for which the stress-strain behavior is shown in the figure below. A cylindrical specimen of this material 10.0 mm in diameter and 101.6 mm long is pulled in tension with a force of 10,000 N. If it is known that this alloy has a value for Poisson's ratio of 0.35, compute (a) the specimen elongation, and (b) the reduction in specimen diameter. 500 70 Tensile strength 450 MPa (65,000 psi) 60 400 50 10 psi 300 MPa 40 40 30 200 Yield strength 30 200 250 MPa (36,000 psi) 20 100 20 10 100 10 0.005 0.10 0.20 0.30 0.40 Strain Stress (MPa) Stress (10 psi)
Given your understanding of what initiates and controls failure in materials, which of the following will increase the failure strength or lifetime of a test piece or component and why? a. Decreasing the difference between the maximum and minimum stress values, as this effects the stress concentration factor b. Decreasing the temperature below the brittle-ductile transition temperature, to make it harder C. Polishing to reduce surface defects Od. Increasing its volume, to give a larger cross sectional area Oe. Increasing the grain size so there are less grain boundaries to initiate failure
Figure shows the stress–strain relations of metals A and B during tension tests until fracture. Determine the following for the two metals (show all calculations and units): - Proportional limit- Yield stress at an offset strain of 0.002 in./in.- Ultimate strength- Modulus of resilience- Toughness- Which metal is more ductile? Why?
A tensile test specimen of aluminum alloy having a diameter of 0.5 in. and a gage length of 2 in. was tested to fracture. The complete stress-strain diagram for this specimen is shown below to the left. The small strain portion of this diagram has been enlarged (to the right) to show in more detail the linear portion of the stress-strain diagram. Determine (a) Young's modulus or modulus of elasticity (i.e., the slope of linear portion), (b) yield stress (using the so-called 0.2% offset method from the lecture notes), (c) yield strain (i.e., the strain corresponding to yield stress, not the 0.2%!), (d) ultimate strength (i.e., the peak in stress-strain diagram), (e) rupture stress (i.e., stress at breaking/failure), (f) rupture strain (i.e., the strain corresponding to rupture stress). 80 70 70 60 60 50 50 40 30 30 20 20 10 10 0.005 0.01 0.015 0.02 Strain (in/in) Strain (in/in) Stress (ksi) 0.015 - 0.03 - 0.12 - 0.135 - 0.15 Stress (ksi)
S Figure P1.16 shows the stress-strain relations of metals A and B during ten- sion tests until fracture. Determine the following for the two metals (show all calculations and units): a. Proportional limit b. Yield stress at an offset strain of 0.002 m/m. c. Ultimate strength d. Modulus of resilience e. Toughness f. Which metal is more ductile? Why? 900 Metal A 600 Metal B 300 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 Strain, m/m FIGURE P1.16 Stress, MPa
The stress–strain relation shown in Figure was obtained during the tensile test of an aluminum alloy specimen. Determine the the maximum working stress to be applied to this material if a factor of safety of 1.5 is used?
Q2c) Listed in the table below is the tensile stress-strain data for different grades of steels. Utilizing the data given answer the three queries given below. Material Yield Tensile Strain at Fracture Elastic StrengthStrengthFractureStrengthModulus (MPa) (MPa) (MPa) (GPa) A 410 1440 0.63 265 410 В 200 220 0.40 105 250 C 815 950 0.25 500 610 D 800 650 0.14 720 210 E Fractures before yielding 650 550 1) Which will experience the greatest percent reduction in area? Why? 2) Which is the strongest? Why? 3) Which is the stiffest? Why?