Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 14, Problem 3CQ
To determine
The units of cost per unit for the material cost in designs where weight is not critical.
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Materials Science And Engineering Properties
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- Enumerate all the necessary factors that you think are needed to be consider in selecting proper materials in Engineering Design and explain why for each enumerated factor.arrow_forward1. The tensile strength vs. temperature curves of aluminum are plotted below. Explain the meaning of these two curves. 400 Ultimate strength 300 Yield strength 200 100 -200 -150 -100 -50 50 100 150 200 250 Temperature, °C Strength, kPaarrow_forwardExplain in detail the effect of Temperature on the Elastic Modulus and Yield Strength ofEngineering materials.arrow_forward
- (a) What is the effect of increasing the carbon content in steel on each of the each of the following items? 1. Yield strength 2. Modulus of elasticity 3. Ductility (b) Materials are generally classified into three categories based on the predominant types of bond. What are these three categories and what are the predominant types of bond in each category? For each category, provide two examples of common materials used by civil engineers.arrow_forwardAn alloy steel having a diameter of 0.45 in. extends 0.002 in. over a gage length of 2.2 in. due to a tensile load of 3900 lb. What is the modulus of elasticity of this alloy steel? A)29,010 ksi B)27,000 ksi C)30,000 ksi D)28,000 ksiarrow_forwardState the importance of having standards for engineering materials in Agriculturearrow_forward
- To stretch a 200 mm long tensile test specimen (a) of steel elastically by 0.08 mm. How many loads do I need to apply? (b) What is the maximum length of this sample without plastic deformation? How long can it be extended? (The modulus of elasticity of steel is 210 GPa, yield strength 580 MPa, tensile strength 920 MPa specified as.arrow_forwardQ2: Comparison between the following? (Choose one only) 1. Ductility and toughness of a materials property? 2. Permeability and porosity property?arrow_forwardActual weight of steel bars = 1.520 kg/m, Standard weight of steel bars (16mm )= 1.579 kg/m, Load at yield point = 3480 kgf ,Load at breaking point = 7540 kgf, Maximum load = 7. 9260 kgf, Unit weight of steel = 7854 kg/m^3. What is the cross-sectional area in m^2? Compute it's yield strength,ultimate strength and breaking strength in MPA?arrow_forward
- We have 2 different materials which are "A" and "B". Material Name Modulus of Elasticity (GPa) Length (mm) Diameter (mm) K (Bulk Modulus) (GPa) A 70 100 10 65 B 50 100 10 67 Please answer these questions according to data; 1) Which one can show more deformation if the same tensile load is applied? 2) Which one increases more in diameter if the same compression load is applied? 3) Which one is more ductile?arrow_forwardWhich of the following terms indicate "the ability of the material to not to undergo change in shape when loads are applied" a. Weldability b. Formability c. Conductivity d. Rigidityarrow_forwardThree steel bars have a diameter of 25 mm and carbon contents of 0.2, 0.5, and 0.8%, respectively. The specimens were subjected to tension until rupture. The load versus deformation results were as shown in Table P3.19. If the gauge length is 50 mm, determine the following: a. The tensile stresses and strains for each specimen at each load increment. b. Plot stresses versus strains for all specimens on one graph. TABLE P3.19 Specimen No. Carbon Content (%) 1 3 0.2 0.5 0.8 Deformation (mm) Load (kN) 0.00 0.07 133 133 133 0.10 137 191 191 0.15 142 196 285 0.50 147 201 324 1.00 140 199 383 2.50 155 236 447 5.00 196 295 491 (Rupture) 7.50 226 336 10.00 241 341 12.50 218 304 (Rupture) 13.75 196 (Rupture) c. The proportional limit for each specimen. d. The 0.2% offset yield strength for each specimen. e. The modulus of elasticity for each specimen. f. The strain at rupture for each specimen. g. Comment on the effect of increasing the carbon content on the following: Yield strength ii.…arrow_forward
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