Please answer these three questions. Thank you!   A material has a Poisson’s ratio of -0.2 . Which of the following is true? a. Strain is always compressive regardless of the force applied. b. Lateral and longitudinal strains will have the same sign c. Lateral strain is five times the longitudinal strain. d. The material is ductile and has a high modulus of elasticity.   Consider a rod that can carry a maximum stress equal to 200 MPa. If it is to be designed to have a factor of safety against failure equal to 1.5, then the maximum stress that the rod should experience when loaded is nearest to ______ a. 133 MPa b. 150 MPa

Q: Consider steel B is a cylindrical sample with original length 40mm and subjected to 15700N.…

A: Option b is correct.

Q: a square rod of 6061-T6 aluminum (cross-section = 4mm X 4mm, length = 2.3m). The material has a…

A: Given       Tensile load, P =3 kN        Cross-section = 4mm X 4mm Find The applied engineering…

Q: A 5 m long iron rod was stretched until its strain becomes 0.001. Find the elongation of the rod. A.…

A: Given:-  Length of the rod (L) = 5 m = 5000 mm  Strain developed in the rod = 0.001 To Find:-…

Q: The figure below is a stress strain curve for an alloy of aluminum at various temperatures. a) What…

A: (a) Draw the line at the Centre between the temperatures 250k and 350k. This line gives line of 298k…

Q: 1. Consider a cylindrical specimen of some hypothetical metal alloy that has a diameter of 12.0 mm.…

A:

Q: Figure 1 2. A wooden column is experienced 5 kN tensile load as shown in Figure 2. The cross secti…

A:

Q: What is the unit of strain? Select all correct answers.     m/m     no unit     mm/mm     mm

A: Strain is ratio of change in dimension to the original dimension.

Q: The elastic portion of the tension stress-strain diagram for an aluminum alloy is shown in the…

A: Given ,A alluminium specimen in which guage length = 50 mm and diameter of 12.5 mmLoad applied = 45…

Q: erial when longitudinal strain is 0.12mm/mm and transverse strain is -0.03

A: Given data  Longitudinal strain=0.12mm/mm  Transverse strain=-0.0396mm/mm

Q: ngineering of materials need hel

A:

Q: What is the modulus of elasticity

A: force F = 613 kNdiameter d = 43 mm = 0.043 mlength L = 304 mm = 0.304 melongate length l = 0.00224 m

Q: calculate the following: 1-modulus of elasticity 2-tensile strength 3-the ductility in % of…

A:

Q: With the force P appliced on a member, the stress distributions at different cross sections are…

A:

Q: The following strains were measured using a 0-45-90 degree rosette, with the 0 degree strain gauge…

A:

Q: The diagram below shows a microscopic metal rod with a single crystal structure whose orientation is…

A:

Q: Consider the tensile stress-strain diagram below. If samples 1 and 2 are identical except that they…

A: From given stress strain diagram,it is required to determine which sample tested at lower…

Q: A tension test was performed on a specimen having an original diameter of 12.5 mm and a gage length…

A: Step 1:Step 2:Step 3: Step 4:

Q: Determine the tensile yield strength (0.2% offset) and the maximum strength of a metal alloy having…

A: Yield Strength : Yield strength is the maximum stress that can be applied before it begins to…

Q: 4. A cylindrical metal wire 2m long is loaded in tension, causing it to extend 15mm. Calculate the…

A: GivenL=2m∆L=15mm=0.015m

Q: You are given a square rod of 6061-T6 aluminum (cross-section = 4mm X 4mm, length = 2.3m).  The…

A: The cross section of the square rod is, A=4 mm×4 mm The length of the rod is, L=2.3 m The Young's…

Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.