Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 14, Problem 10ETSQ
To determine
The material class which provides the highest specific critical-stress intensity factor.
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2. A steel bar of 5 mm is heated from 25°C to 45°C
and it is free to expand. The bar will induce
OCA) No stress
O(B) Shear stress
OC) Tensile stress
OD) Compressive stress
urgent all three subpart question
An aluminium wire (E=10,600 ksi) having a diameter d=1/8 inch. and
length L=14 ft is subjected to a tensile load P. If the maximum
permissible elongation of the wire is 1/6 inch and the allowable stress in
tension is 10 ksi, what is the allowable load Pmax? Answer in Ibs
Chapter 14 Solutions
Materials Science And Engineering Properties
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- A 1 foot plate with a 0.25-inch thickness has a width of 2.4 inch and a hole at the middle with a diameter of 2 inch. The material has an ultimate strength of 132 ksi and a yield strength of 84 ksi. A repeated 52N tensile load is applied along its neutral axis in the direction of its length at a temperature of 90 degree fahrenheit. The surface finish is Ground. The reliability of the material is targeted at 99.99%. Calculate: The Theoretical Stress Concentration Factor The Fatigue Stress Concentration Factor The Factor of Safety for the Goodman Criterion The Factor of Safety for the Soderberg Criterion The Factor of Safety for the Gerber Criterion The Factor of Safety for the ASME-Elliptic Criterion.arrow_forwardd) No increase Which of the following is not a property of steel materials? C a) Homogeneous and isotropic b) Linearly elastic stress-strain behavior c) Recyclable d) Fire-resistantarrow_forward25 mm PROBLEM 2.49 Brass core E- 105 GPa a- 20.9 x 10c The aluminum shell is fully bonded to the brass core and the assembly is unstressed at a temperature of 15°C. Considering only axial deformations, determine the stress in the aluminum when the temperature reaches 195°C. Aluminum shell E - 70 GPa a- 23.6 x 10rc 60 mmarrow_forward
- The failure stress of a homogeneous steel bar having a diameter of 10 mm is 250 MPa. Using a factor of safety of 2.0, calculate the maximum load in N that the bar can support.arrow_forwardWhat is the value of reduction factor of the beam, if the stress in the steel is 400 MPa, and the Modulus of Elasticity of the Steel is 200,000 MPa.arrow_forwardAn AISI 1040 hot-rolled steel [E = 207 GPa; α = 11.3×10–6/°C] bar is held between two rigid supports. The bar is stress free at a temperature of 30°C. The bar is then heated uniformly. If the yield strength of the steel is 429 MPa, determine the temperature at which yield first occurs.arrow_forward
- The assembly is composed of a steel shell and an aluminum core that has been welded to a rigid plate. The gap between the plate and the aluminum is initially 1- mm. If the assembly's temperature is reduced by 180°C, determine (a) the final axial stresses in each material and (b) the deflection of the rigid bar. To support your response, draw a deformation diagram with appropriate labels. Use the following properties: Aluminum core Steel shell Diameters (mm) d = 15 mm do = 30 mm d₁ = 20 mm E (GPa) 70 200 2 m a (/°C) 22 x 10-6 12 x 10-6arrow_forward2. The materials that have low values of tensile strain * concrete steel Aluminum O Brass O All above are correctarrow_forward2. The tensile link shown is flat, is 5 mm. thick, and carries an axial load P = 1350 N. a. Compute the maximum stress in the link. b. This link is to be made of plastic. From the list of plastics listed as follows, select an appropriate material. Allowable Stress (MPa) 15 55 Plastic Material Acronym HDPE High-density polyethylene Polycarbonate Polypropylene High-impact polystyrene c. For your choice of material from (b), what is the maximum load P that can be carried by the link? PC PP HIPS 25 30 30 mm 10 mmarrow_forward
- The composite bar shown is rigidly attached to the two supports. The left portion of the bar is copper, of uniform cross-sectional area 80 c?^2 and length 30 cm. The right portion is aluminum, of uniform cross-sectional area 20 c?2 and length 20 cm. At a temperature of 26℃ the entire assembly is stress free. The temperature of the structure drops and during this process the right support yields 0.025 mm in the direction of the contracting metal. Determine the minimum temperature to which the assembly may be subjected in order that the stress in the aluminum does not exceed 160 MPa. For copper E = 200 GPa, ? = 17x10^-6/℃, and for Aluminum E = 80 GPa, ? = 23x10^-6/℃.arrow_forwardAt what temperature in terms of ΔT will the aluminum and steel segments shown have numerically equal stresses when the load P = 200 kN?arrow_forwardEngineering Mechanics. please help to provide solution for the this problem.arrow_forward
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