2. Given a plate that is 0.12 in thick and constructed from high carbon steel, 490 Brinell hardness, witha machined finish. Assume 95% reliability and an operating temperature of 250 °C. (Hint: to find arelationship between Brinell Hardness and ultimate tensile strength, see Chapter 3 of the textbook).a) Construct the log S- log N curve.b) The loading is completely reversed (omean=0), and infinite life is desired. What alternatingstress can be allowed with a safety factor of 2?

Answered: Image /qna-images/answer/f6d5d989-da83-423d-aea2-1686a0747912.jpg

Answered: 2. Given a plate that is 0.12 in thick…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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1. A high strength steel band saw, 20 mm wide by 0.80 mm thick, runs over pulleys 600 mm in diameter. What maximum flexural stress is developed? What minimum diameter pulleys can be used without exceeding a flexural stress of 400 MPa? Assume E = 200 GPa. %3D Hello sir, please solve detailed details, boring, new article, I didn't understand anything, please sir, thank you sir. A detailed solution
Calculate the cutting force for the punching of the triangular slot shown in the figure for Mild steel and Aluminum 6061 alloy. 30 Each side of the triangle is equal to 30 mm. t= 5 mm (hints) Cutting force = StL S = Shear strength of sheet-metal 1 = Sheet-metal thickness L= Length of cutting edge T= Ultimate tensile strength of sheet-metal Tensile Strength (N/mm) Material Mild Steel 440 Aluminum 6061 alloy 310 AISI type 304 Stainless Steel 505 Shear strength for: Aluminum is approximately 50% of its tensile strength Mild steel is approximately 60% of its tensile strength Stainless steel is approximately 90% of its tensile strength
A compression test is performed on a 2” diameter by 5” long bar of an unknown metal. At the end of the compression test, the bar has a height of 3.5 inches. The strength coefficient (K) and the work hardening coefficient (n ) are 250 MPa and 0.4, respectively. State all assumptions needed to work the problem. a) Calculate the final diameter of the bar in inches. b) Calculate the flow stress in MPa when the length of the bar is 4”.
3) The machine component from problem 2 (bar with hole and notches) undergoes variable loading from 42,500N to 45,000N. The part is made from 6061-T6 aluminum (S_u = 310 MPa and S_y = 275 MPa). The machined part requires a reliability of 95%. The large size results in a gradient strength factor of c_G=0.8 (see note c in Table 8.1). Calculate the safety factor. If the safety factor is less than one (i.e., shaft fails), find the number of cycles to failure.
Using the figure from Question 2, imagine the lamp gets heavier and heavier until one of the cables breaks. If all of the cables have the same tensile strength, a) which one will break first, and b) why will that one specifically break first? You do not need to provide Given, Assume, and Problem Type/Features for this question. You just need to provide Find, Analyses and a Conclusion. Provide an explanation for b) that isclear, concise, correct and well organized. Use at least one diagram (2D or 3D) to make your case as to why one of them will break before the others. You can use equations/math to support your explanation as well, if you want, but expressing your answer in words and using logic will be all that is necessary. Youranswer to a) i.e. which one will break first, can be your “Conclusion” to Question 3
Question 2) The non-rotating shaft shown in figure (1) is made by 1050 HR machined steel. The shaft is subjected to a fluctuated bending moment varies from +20klb.in to -10klb.in. The working temperature is 200 Fahrenheit and the desired reliability is 90%. Find a) Ideal endurance strength, b) Marin factors, C) Endurance strength, d) Notch sensitivity factor and e)Safety factor based on Soderberg criterion. The length of the shaft = 7 ft, r =0.5 in, D= 4.2 in and d=4 in. Figure (1)
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An SAE3140 OQT 1300 steel bar with a rectangular cross section of 2 in ( base) by 3.5 in (height) is to be machined and subjected to repeated bending stress. What is the endurance limit (Sn) for this material in psi unit? (Use Figure 5-11/Textbook for this question.Do not use an external source. Do not use a metric unit for this question) ) Note : Your answer should be a numerical value only. Do not include an explanation. Example: 25 (acceptable format for an answer) Example: 25 psi (this format is not acceptable for this question)
Question 1 An aluminium alloy component, is machined on a lathe. The lathe has a mechanical efficiency of 91%. The lathe performs a turning operation on the workpiece which has a diameter of 150 mm and a length of 400 mm. The shear strength of the aluminium alloy work piece is 230 MPa and the tensile strength is 420 MPa. To machine the component, the lathe operator uses a cemented carbide tipped tool, having a rake angle of 6°. Furthermore, the relevant processing parameters are selected from the relevant data provided in a handbook by the lathe tool supplier. Some of the data is reproduced in Tables 1 and 2. Table 1. Surface Cutting Speeds (m/min) Part Material Aluminium Brass Cast Iron Mild Steel Alloy High Speed 75 18 120 28 Steel Tool Material Cemented 180 100 220 170 Carbide Table 2. Typical recommended feeds for turning (mm/rev) Part Material Aluminium Brass Cast Iron Mild Steel Alloy High Speed 0.2 0.15 0.2 0.15 Тool Steel Material Cemented 0.3 0.25 0.4 0.25 Carbide The operator…
Hello Sir.Good Evening I have a question in my homework related machine element lesson. The following below is my question. Please advice. Thank you so much "Design a shaft face journal bearing for a fixed radial load of 1500 lb, while the shaft rotates at 850 rpm. Shaft stress analysis determined that the minimum acceptable diameter is 2.10 in. This is because the shaft is a part of the machine that requires good precision"

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