DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 31, Problem 7RQ
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Chapter 31 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 31 - How does the pitch diameter differ from the major...Ch. 31 - Prob. 2RQCh. 31 - Prob. 3RQCh. 31 - Prob. 4RQCh. 31 - Prob. 5RQCh. 31 - Explain the meaning of 14 -20 UNC-3A.Ch. 31 - Prob. 7RQCh. 31 - Prob. 8RQCh. 31 - Prob. 9RQCh. 31 - Prob. 10RQ
Ch. 31 - Prob. 11RQCh. 31 - Prob. 12RQCh. 31 - Prob. 13RQCh. 31 - What is the reason for using a taper tap before a...Ch. 31 - Prob. 15RQCh. 31 - Can a fluteless tap be used for threading a hole...Ch. 31 - What provisions should a designer make so that a...Ch. 31 - What is the major advantage of a spiral-point tap?Ch. 31 - Prob. 19RQCh. 31 - Is it desirable for a tapping fluid to have...Ch. 31 - How does thread milling differ from thread...Ch. 31 - What are the advantages of making threads by...Ch. 31 - Prob. 23RQCh. 31 - Prob. 24RQCh. 31 - What is a fluteless tap?Ch. 31 - Why is the involute form used for gear teeth?Ch. 31 - What is the diametral pitch of a gear?Ch. 31 - What is the relationship between the diametral...Ch. 31 - On a sketch of a gear, indicate the pitch circle,...Ch. 31 - What five requirements must be met for gears to...Ch. 31 - What are the advantages of helical gears compared...Ch. 31 - Prob. 32RQCh. 31 - What difficulty would be encountered in bobbing a...Ch. 31 - What is the only type of machine on which...Ch. 31 - Prob. 35RQCh. 31 - Why arent more gears made by broaching?Ch. 31 - What is the most important property of a crown...Ch. 31 - What are three basic processes for machining...Ch. 31 - Which basic gear-machining process is utilized in...Ch. 31 - When a helical gear is machined on a milling...Ch. 31 - Why is a gear-hobbing machine much more productive...Ch. 31 - Prob. 42RQCh. 31 - What are the advantages of cold-roll forming for...Ch. 31 - Prob. 44RQCh. 31 - Under what conditions should shaving not be used...Ch. 31 - Prob. 46RQCh. 31 - Can lapping be used to finish cast iron gears?Ch. 31 - What factors are usually checked in inspecting...Ch. 31 - What are the basic methods for gear finishing?Ch. 31 - A hob that has a pitch diameter of 76.2 mm is used...Ch. 31 - In Figure 31.17, a form-milling operation and...Ch. 31 - A gear-broaching machine can complete the gear in...Ch. 31 - Prob. 4PCh. 31 - If only three gears described in Problem 4 were to...Ch. 31 - Based on the size and shape of the product,...Ch. 31 - What type of engineering materials might be able...Ch. 31 - Prob. 3CS
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- If an isotropic material has a Young's modulus of 120 Gpa and a Poisson's ratio of 0.3, calculate its shear modulus. Select one: O G= 25 Gpa O G= 46 Gpa O G = 77 Gpa O G= 39 Gpa O G= 29 Gpaarrow_forwardQuestion 12 What is the resulting modulus of In (2 +3 j)?arrow_forwardUsing the tensile test simulation tool, a. generate the stress-strain curve for aluminum b. Indicate the following points in the stress-strain curve for aluminum and give the corresponding values: limit of proportionality elastic limit 0.2% offset yield stress (include the graph illustrating how this was determined) ultimate stress fracture stress c. Calculate modulus of elasticity. d. compare aluminum with nylon (include the related graph) and answer the following: Which has higher tensile strength? Provide the necessary values to support the answer. Which is stiffer? Support your answer with calculations.arrow_forward
- Suppose that o2 = 70 MPa. (Figure 1) 15 MPa O x Part B Determine the normal stress that acts on the element with orientation = -11.6°. Express your answer to three significant figures and include the appropriate units. 02 = Part C Oy = Part D μА Value Determine the normal stress oy that acts on the element with orientation = -11.6 ⁰. Express your answer to three significant figures and include the appropriate units. Tz'y' = Value Units μA Value Units Determine the shear stress Ta'y that acts on the element with orientation = -11.6°. Express your answer to three significant figures and include the appropriate units. ? Units ? ?arrow_forwardIf for a given material, E = 2G (E is modulus of elasticity, G is the shear modulus), then the bulk modulus K will bearrow_forwardThe engineering stress-engineering strain tensile curve for a stainless steel type 304 alloy is shown. Calculate the constants K and n for the true stress and true strain curve before necking (or = K (&)"). Engineering Stress (MPa) 1000 900- 800- 700- 600- 500- 400- 300- 200- 100- of 0.0 02 0.4 Enginering Strain (mm/mm) 0.6 0.8 1.0arrow_forward
- 2) Which of the following pairs are NOT correctly matched? O Macro stresses - Large scale and may be developed by inhomogeneous plastic deformation Macro stresses - From external loading, by non-uniform heating O Micro-stresses - Local small-scale internal stresses which arise due to arise due to heterogeneities i.e. due to differences in elastic modulus, co-efficient of expansion O Micro-stresses - Arise due to heterogeneities i.e. due to differences in elastic modulus, co-efficient of expansionarrow_forwardSketch the relationship between the stress and the number of cyclic loading applied on an elementarrow_forwardGrade 1020 steel has a yield strength of 42 ksi and an elastic modulus of 30 Mpsi. Another grade of steel has a yield strength of 132 ksi. What is its elastic modulus? (Express your answer as an integer.) E = |Mpsiarrow_forward
- Force P and length change AL data are given in table below for the initial portion of a tension test on 7075-T651 Al alloy. The diameter before testing was 9.07 mm., and the gage length Linitial for t length change measurement was 50.8 mm. Calculate corresponding values of engineering stress and strain, and display these values on a stress-strain plot. (use the region for drawing your plot in question sheet) P, kN AL mm 7.22 0.0839 14.34 0.1636 21.06 0.241 0.308 0.380 0.484 0.614 0.924 26.8 31.7 34.1 35.0 36.0 36.5 1.279 36.9 37.2 1.622 1.994arrow_forwardneed some help mechanics of materials reviewarrow_forwardNeed help on part A,C,and D engineering of materials Part C - Angle of twist of B with respect to E Determine the angle of twist of B with respect to E. Express your answer to four significant figures and include the appropriate units. ϕB/E = Part D - Angle of twist of A with respect to F Determine the angle of twist of A with respect to F. Express your answer in radians to four significant figures. ϕA/F =arrow_forward
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