Homework Answers
The annealed specimen will absorb more energy and quenched specimen will absorb less energy.
The high variation of impact energies is attributed due to presence of course pearlite in annealing and the least impact energy in quenching is due to formation of martensitic structure which is hard and brittle distorted body centered tetragonal structure.
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You run a Charpy impact test on two specimens of the same material, but one was fully 4 annealed, and the other was que...
Question 2 (20 pts): Charpy V-notch test was performed for different steel specimens. Please answer the...
Question 2 (20 pts): Charpy V-notch test was performed for different steel specimens. Please answer the following questions briefly. a) (3) As the temperature becomes lower, the metals usually experience a transition from ductile fracture to brittle fracture at a certain temperature. This temperature is called: b) (6) The graph below shows the test results for annealed 1018 steel and annealed 1045 steel. Please label the curves with relevant steel (1018 or 1045) and briefly explain your reason. 1018 AND...
Question 2 (20 pts): Charpy V-notch test was performed for different steel specimens. Please answer the...
Question 2 (20 pts): Charpy V-notch test was performed for different steel specimens. Please answer the following questions briefly. a) (3) As the temperature becomes lower, the metals usually experience a transition from ductile fracture to brittle fracture at a certain temperature. This temperature is called: b) (6) The graph below shows the test results for annealed 1018 steel and annealed 1045 steel. Please label the curves with relevant steel (1018 or 1045) and briefly explain your reason. 1018 AND...
Data Collected During the Charpy Impact Tests Two types of steel specimens (BLUE and RED) were...
Data Collected During the Charpy Impact Tests Two types of steel specimens (BLUE and RED) were used in Charpy testing. The specimens were tested at one of three possible temperatures (-10°F, 32°F or 72°F). Below are the results from this testing. Temperature (°F) 72 72 72 32 32 32 Reading (lb-ft) 191 202 175 25 32 26 32 22 10 12 Type Blue Blue Blue Blue Blue Blue Blue Blue Blue Blue Red Red Red Red Red Red Red Red...
(25) Two specimens with the same dimensions and material were subjected to fatigue tests. The figure below describes th...
(25) Two specimens with the same dimensions and material were subjected to fatigue tests. The figure below describes the experimental dynamic stress conditions applied in the fatigue test. Specimen 1 was subjected to test 1 and specimen 2 was subjected to test 2 conditions. 3. 300 Test 1 Test 2 200 100H -100 -200 300 5 10 15 20 25 Time A. (15) Calculate the mean stress and stress amplitude applied in tests 1 and 2 (5) If the specimen...
Consider two glasses one filled with water and the other half for both of the same...
Consider two glasses one filled with water and the other half for both of the same temperature in which glass of the molecules moving faster and which is their grade or throw more energy which will move more heat we needed to increase the temperature by 1°
1. Compare two cups of water of the same mass one at 25ºC and the other...
1. Compare two cups of water of the same mass one at 25ºC and the other at 85ºC. When each is contacted to a large object of temperature T, which statement is correct? Group of answer choices a. The heat transfer depends on the temperature of the large object. b. The 85°C cup of water transfers more heat. c. The 25°C cup of water transfers more heat. d. They transfer the same total amount of heat. 2.. Imagine you transfer...
4. Two conducting wires of the same material are to have the same resistance. One wire...
4. Two conducting wires of the same material are to have the same resistance. One wire is 19.0 m long and 0.38 mm in diameter. If the other wire is 0.28 mm in diameter, how long should it be? ________ m
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...
You found 2 articles that describe the same algorithm. Also, one defines the run time of...
You found 2 articles that describe the same algorithm. Also, one defines the run time of the algorithm as Ω(?^?) and the other as Ω(?^?). Both are correct! Which one is more accurate? Explain.
When the temperature of a certain solid, rectangular object increases by Delta T, the length of...
When the temperature of a certain solid, rectangular object increases by Delta T, the length of one side of the object increases by 0.010% = 1.0 10^-4 of the original length. The increase in volume of the object due to this temperature increase is A. 0.01% = 1.0 10^-4 of the original volume. B. (0.010)^3 % = 0.0000010% = 1.0 10^-4 of the original volume. C. (1.0 10^-4)^3 = 0.0000000001% = 1.0 10^-12 of the original volume. D. 0.030% =...
Question 2 (20 pts): Charpy V-notch test was performed for different steel specimens. Please answer the following questions briefly. a) (3) As the temperature becomes lower, the metals usually experience a transition from ductile fracture to brittle fracture at a certain temperature. This temperature is called: b) (6) The graph below shows the test results for annealed 1018 steel and annealed 1045 steel. Please label the curves with relevant steel (1018 or 1045) and briefly explain your reason. 1018 AND...
Question 2 (20 pts): Charpy V-notch test was performed for different steel specimens. Please answer the following questions briefly. a) (3) As the temperature becomes lower, the metals usually experience a transition from ductile fracture to brittle fracture at a certain temperature. This temperature is called: b) (6) The graph below shows the test results for annealed 1018 steel and annealed 1045 steel. Please label the curves with relevant steel (1018 or 1045) and briefly explain your reason. 1018 AND...
Data Collected During the Charpy Impact Tests Two types of steel specimens (BLUE and RED) were used in Charpy testing. The specimens were tested at one of three possible temperatures (-10°F, 32°F or 72°F). Below are the results from this testing. Temperature (°F) 72 72 72 32 32 32 Reading (lb-ft) 191 202 175 25 32 26 32 22 10 12 Type Blue Blue Blue Blue Blue Blue Blue Blue Blue Blue Red Red Red Red Red Red Red Red...
(25) Two specimens with the same dimensions and material were subjected to fatigue tests. The figure below describes the experimental dynamic stress conditions applied in the fatigue test. Specimen 1 was subjected to test 1 and specimen 2 was subjected to test 2 conditions. 3. 300 Test 1 Test 2 200 100H -100 -200 300 5 10 15 20 25 Time A. (15) Calculate the mean stress and stress amplitude applied in tests 1 and 2 (5) If the specimen...
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...
When the temperature of a certain solid, rectangular object increases by Delta T, the length of one side of the object increases by 0.010% = 1.0 10^-4 of the original length. The increase in volume of the object due to this temperature increase is A. 0.01% = 1.0 10^-4 of the original volume. B. (0.010)^3 % = 0.0000010% = 1.0 10^-4 of the original volume. C. (1.0 10^-4)^3 = 0.0000000001% = 1.0 10^-12 of the original volume. D. 0.030% =...
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