Homework Answers
The measurement of cross sectional area change is known as "percentage cold work" i.e.
%CW=
[A1-A2] / A1 X 100 Where A1and A2 are the initial and final
cross-sectional area of the specimen, respectively.
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II- Given 2 brass specimens with initial dimensions as follo Specimen #1: rectangular cross-section (12 x...
II- Given 2 brass specimens with initial dimensions as follows: Specimen #1: rectangular cross-section (12 x...
II- Given 2 brass specimens with initial dimensions as follows: Specimen #1: rectangular cross-section (12 x 20 mm) Specimen #2: circular cross-section (Ø = 15 mm) Both specimens were cold worked until the final cross-section area became 100 mm2. a) (6) Calculate the percentage of cold work for both specimens. b) (3) After cold work, both specimens were heated at different temperatures in order to reach full recrystallization in one hour. Which specimen will require lower heat treatment temperature? Explain...
this all of it !!! 4. Two previously undeformed specimens of the same metal are to...
this all of it !!!
4. Two previously undeformed specimens of the same metal are to be plastically deformed by reducing their cross-sectional areas. One has a circular cross section, and the other is rectangular during deformation the circular cross section is to remain circular, and the rectangular is to remain as such. Their original and deformed dimensions are as follows: Rectangular (mm) Circular (diameter, mm) 125x 175 15.2 Original dimensions 7.5x 200 Deformed dimensions 11.4 Which of these specimens...
Chapter 06, Problem 6.50 A steel alloy specimen having a rectangular cross section of dimensions 19.0...
Chapter 06, Problem 6.50 A steel alloy specimen having a rectangular cross section of dimensions 19.0 mm x 3.2 mm (0.7480 in. x 0.1260 in.) has the stress-strain behavior shown in the Animated Figure. If this specimen is subjected to a tensile force of 100900 N (22680 lbf) then (a) Determine the amount of elastic strain induced. (b) Determine the amount of plastic strain induced. (c) If its original length is 400 mm, what will be its final length after...
A specimen of ductile cast iron having a rectangular cross section of dimensions 4.8 mm x...
A specimen of ductile cast iron having a rectangular cross section of dimensions 4.8 mm x 15.9 mm is deformed in tension. Using the load-elongation data tabulated below, complete problems (a) through (e) a) Plot data as engineering stress versus engineering strain (Use the Excel if possible, and show the graph on a separate sheet, or copy on the bottom.) Load Length N mm 0 75 75.025 4,740 b) Determine the 0.2% offset yield strength; (Plot the data in a...
Question #2 [12 marks] 15 mm The Figure shows a steel bar of rectangular cross section...
Question #2 [12 marks] 15 mm The Figure shows a steel bar of rectangular cross section (10x40 mm) carries a tensile load P and is attached to a support by means of a round pin of diameter 15 mm. The allowable stresses for the bar in tension and the pin in shear are Gallow -120 MPa and Tallow 60 MPa, respectively. What is the maximum permissible value of 10 mm the load P? 40 mm Question #3 [16 marks] Cross...
Question 2 (30 marks) The wood beam below (cross section dimensions 150 x 250 mm, as...
Question 2 (30 marks) The wood beam below (cross section dimensions 150 x 250 mm, as indicated) is strengthened at the bottom using 3 steel reinforcement plates of the same 12mm thickness (see figure), perfectly glued to the wooden beam. The modulus of elasticity for wood is E,-12 GPa and for steel E,-200 GPa. Given the allowable stresses (in both tension and compression) for wood ơw-12 MPa and for steel Ơs = 150 MPa, determine the largest possible moment due...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The widt...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w 0.5 m and their lengths are eitherl 2 m or 12 2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is ρ-1000 kg/m' and its absolute viscosityH-1 .00 x 103 N.s/m2 You are asked to perform dimensional analysis to find the drag force on the piles,...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The widt...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w - 0.5 m and their lengths are either l 2 m or 12 2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is p 1000 kg/m and its absolute viscosity 1.00 x 10-3 N.s/m2 You are asked to perform dimensional analysis to find the drag force...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The wid...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w -0.5 m and their lengths are either lı- 2 m or l2-2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is p 1000 kg/m3 and its absolute viscosityH 1.00 x 10-3 N.s/m2. You are asked to perform dimensional analysis to find the drag force on the...
how do i do even questions 1-12? 90 SECTION 2 The Controller d Where load chans The magnitude of the integraR Where...
how do i do even questions 1-12?
90 SECTION 2 The Controller d Where load chans The magnitude of the integraR Where lo Problems I. Which section of the closed-loop system performs the four 2. In an Oe-OfT beating system, an error signal is produced 19. a. h length of time the error - both a and b control modes? applied input voltage (above. when the measured temperature is below) the setpoint The term derivative means A derivative controllo portional...
II- Given 2 brass specimens with initial dimensions as follows: Specimen #1: rectangular cross-section (12 x 20 mm) Specimen #2: circular cross-section (Ø = 15 mm) Both specimens were cold worked until the final cross-section area became 100 mm2. a) (6) Calculate the percentage of cold work for both specimens. b) (3) After cold work, both specimens were heated at different temperatures in order to reach full recrystallization in one hour. Which specimen will require lower heat treatment temperature? Explain...
this all of it !!!
4. Two previously undeformed specimens of the same metal are to be plastically deformed by reducing their cross-sectional areas. One has a circular cross section, and the other is rectangular during deformation the circular cross section is to remain circular, and the rectangular is to remain as such. Their original and deformed dimensions are as follows: Rectangular (mm) Circular (diameter, mm) 125x 175 15.2 Original dimensions 7.5x 200 Deformed dimensions 11.4 Which of these specimens...
Chapter 06, Problem 6.50 A steel alloy specimen having a rectangular cross section of dimensions 19.0 mm x 3.2 mm (0.7480 in. x 0.1260 in.) has the stress-strain behavior shown in the Animated Figure. If this specimen is subjected to a tensile force of 100900 N (22680 lbf) then (a) Determine the amount of elastic strain induced. (b) Determine the amount of plastic strain induced. (c) If its original length is 400 mm, what will be its final length after...
A specimen of ductile cast iron having a rectangular cross section of dimensions 4.8 mm x 15.9 mm is deformed in tension. Using the load-elongation data tabulated below, complete problems (a) through (e) a) Plot data as engineering stress versus engineering strain (Use the Excel if possible, and show the graph on a separate sheet, or copy on the bottom.) Load Length N mm 0 75 75.025 4,740 b) Determine the 0.2% offset yield strength; (Plot the data in a...
Question #2 [12 marks] 15 mm The Figure shows a steel bar of rectangular cross section (10x40 mm) carries a tensile load P and is attached to a support by means of a round pin of diameter 15 mm. The allowable stresses for the bar in tension and the pin in shear are Gallow -120 MPa and Tallow 60 MPa, respectively. What is the maximum permissible value of 10 mm the load P? 40 mm Question #3 [16 marks] Cross...
Question 2 (30 marks) The wood beam below (cross section dimensions 150 x 250 mm, as indicated) is strengthened at the bottom using 3 steel reinforcement plates of the same 12mm thickness (see figure), perfectly glued to the wooden beam. The modulus of elasticity for wood is E,-12 GPa and for steel E,-200 GPa. Given the allowable stresses (in both tension and compression) for wood ơw-12 MPa and for steel Ơs = 150 MPa, determine the largest possible moment due...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w 0.5 m and their lengths are eitherl 2 m or 12 2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is ρ-1000 kg/m' and its absolute viscosityH-1 .00 x 103 N.s/m2 You are asked to perform dimensional analysis to find the drag force on the piles,...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w - 0.5 m and their lengths are either l 2 m or 12 2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is p 1000 kg/m and its absolute viscosity 1.00 x 10-3 N.s/m2 You are asked to perform dimensional analysis to find the drag force...
A bridge is supported by two types of rectangular cross-section piles located in a river as shown in Figure 1. The width of the piles is w -0.5 m and their lengths are either lı- 2 m or l2-2.5 m. The river of depth of about 20 m runs at 2 m/s. Water density is p 1000 kg/m3 and its absolute viscosityH 1.00 x 10-3 N.s/m2. You are asked to perform dimensional analysis to find the drag force on the...
how do i do even questions 1-12?
90 SECTION 2 The Controller d Where load chans The magnitude of the integraR Where lo Problems I. Which section of the closed-loop system performs the four 2. In an Oe-OfT beating system, an error signal is produced 19. a. h length of time the error - both a and b control modes? applied input voltage (above. when the measured temperature is below) the setpoint The term derivative means A derivative controllo portional...
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