EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 9780100793439
Author: KALPAKJIAN
Publisher: YUZU
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Textbook Question
Chapter 33, Problem 30QLP
Explain the reason that the abrasive-wear resistance of a material is a function of its hardness.
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Chapter 33 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 33 - What is tribology?Ch. 33 - Explain what is meant by (a) surface texture and...Ch. 33 - List and explain the types of defects typically...Ch. 33 - Define the terms (a) roughness, and (b) waviness.Ch. 33 - Explain why the results from a profilometer are...Ch. 33 - Prob. 6RQCh. 33 - List the types of wear generally observed in...Ch. 33 - Define the terms wear, friction, and lubricant.Ch. 33 - How can adhesive wear be reduced? Abrasive wear?Ch. 33 - Prob. 10RQ
Ch. 33 - Explain the functions of a lubricant in...Ch. 33 - Prob. 12RQCh. 33 - Prob. 13RQCh. 33 - Describe the factors involved in lubricant...Ch. 33 - Prob. 15RQCh. 33 - Prob. 16QLPCh. 33 - Explain the significance of the fact that the...Ch. 33 - Prob. 18QLPCh. 33 - Explain why identical surface-roughness values do...Ch. 33 - Prob. 20QLPCh. 33 - Prob. 21QLPCh. 33 - Prob. 22QLPCh. 33 - Prob. 23QLPCh. 33 - Comment on the surface roughness of various parts...Ch. 33 - Prob. 25QLPCh. 33 - Do the same as for Problem 33.25, but for surface...Ch. 33 - Describe your observations regarding Fig. 33.7.Ch. 33 - Give the reasons that an originally round specimen...Ch. 33 - Prob. 29QLPCh. 33 - Explain the reason that the abrasive-wear...Ch. 33 - Prob. 31QLPCh. 33 - List the similarities and differences between...Ch. 33 - Explain why the types of wear shown in Fig. 33.11...Ch. 33 - List the requirements of a lubricant.Ch. 33 - List manufacturing operations in which high...Ch. 33 - List manufacturing operations in which high wear...Ch. 33 - Prob. 37QLPCh. 33 - Prob. 38QTPCh. 33 - A surface with a triangular sawtooth roughness...Ch. 33 - List the steps you would follow if you wished to...Ch. 33 - Discuss the tribological differences between...Ch. 33 - Section 33.2 listed major surface defects. How...Ch. 33 - Describe your own thoughts regarding biological...Ch. 33 - Prob. 48SDPCh. 33 - Prob. 49SDPCh. 33 - Prob. 50SDPCh. 33 - Describe your thoughts on the desirability of...
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- Critically analyse the surface conditions necessary for major hardness tests.arrow_forwardAre the wedge grips suitable for tests of brittle materials? Explainarrow_forwardA cylindrical bronze pin rests on a rotating alumina disk at a mean radius of 10 mm. The normal load on the pin is 20 N. The disk's rotational speed is 500 rpm, and the test lasts 5 hours. The pin and disk mass losses are 60 mg and 0 mg (i.e., assuming no mass loss on the alumina disc). Using the material data given below, calculate the wear coefficients for the bronze pin. (Hardness of bronze = 1 GPa, density of bronze = 8.5 Mg/m3; density of alumina = 3.95 Mg/m3).arrow_forward
- A shaft running at 200 r.p.m is to drive a parallel shaft at 300 r.p.m. The pulley on the driving shaft is 60 cm diameter. Calculate the diameter of the pulley on the driven shaft: (1) Neglecting belt thickness. (2) Taking belt thickness into account, which is 5 mm thick. 3) Assuming in the latter case a total slip of 4%.arrow_forwardQ. A shaft running at 200 r.p.m is to drive a parallel shaft at 300 r.p.m. The pulley on the driving shaft is 60 cm diameter. Calculate the diameter of the pulley on the driven shaft: (1) Neglecting belt thickness. (2) Taking belt thickness into account, which is 5 mm thick. (3) Assuming in the latter case a total slip of 4%.arrow_forwardA 2-cm square cross-section steel part having a Brinell hardness of 100 and a length of 4 cm is to be ground by adhesive wear using a tool of electroplated chromium with a square head of 2 mm x 2 mm. If the normal force applied is 20 kN and the depth to be removed from the surface is 2 mm, determine the number of passes needed (parallel to the length direction) for good lubricationarrow_forward
- List the factors that you would consider in selecting a hardness test. Explain why. 1|Pagearrow_forwardExplain the difference between brittle and ductile materials?arrow_forward1. A shaft made of steel having an ultimate strength of Su is finished by grinding the surface. The diameter of the shaft is d. The shaft is loaded with a fluctuating zero-to-maximum torque. % Su = 1200; % ultimate strength (MPa) % Sy = 800; % yield strength (MPa) % d = 8; % diameter of the shaft (mm) % kS = 0.8; % surface factor kS % kG = 1; % size (gradient) factor kG % N = 75*10^3; % cycles 1.2 For N=75000 cycles and repeated loads (zero-to-maximum), from constant life fatigue diagram, determine alternating stress (MPa)arrow_forward
- Sketch an engineering stress-strain diagram for ceramics, metals and polymers indicating the level of toughness of these materials. Thereafter, choose the type of material with ONE (1) reason that is suitable to reduce the effect of sudden impact.arrow_forwardSmall and medium industries could not have afforded to buy an expensive universal testing machine to test for the performance of their product under tension loading. Therefore, they have ended buying a cheaper hardness tester for the purpose. Identify the way of how the tensile strength is determined for their product.arrow_forwardA 2-cm square cross-section steel part having a Brinell hardness of 200 and a length of 5 cm is to be ground by adhesive wear using a tool of electroplated chromium with a square head of 2 mm x 2 mm. If the normal force applied is 20 kN and the depth to be removed from the surface is 4 mm, determine the number of passes needed (parallel to the length direction) for poor lubrication. Select one: O a. N = 1570 O b. N = 2093 O c.N = 6278 O d. N = 3139arrow_forward
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