EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 28QLP
Do you think it might be important to know whether a raw material to be used in a manufacturing process has anisotropic properties? What about anisotropy in the finished product? Explain.
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Chapter 1 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 1 - What is the difference between an atom and a...Ch. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Define anisotropy. What is its significance?Ch. 1 - What effects does recrystallization have on the...Ch. 1 - What is strain hardening, and what effects does it...Ch. 1 - Explain what is meant by structure-sensitive and...Ch. 1 - Prob. 9RQCh. 1 - What influence does grain size have on the...
Ch. 1 - What is the relationship between the nucleation...Ch. 1 - What is a slip system, and what is its...Ch. 1 - Explain the difference between recovery and...Ch. 1 - What is hot shortness, and what is its...Ch. 1 - Explain the advantages and limitations of cold,...Ch. 1 - Describe what the orange peel effect is. Explain...Ch. 1 - Some metals, such as lead, do not become stronger...Ch. 1 - Describe the difference between preferred...Ch. 1 - Differentiate between stress relaxation and stress...Ch. 1 - What is twinning? How does it differ from slip?Ch. 1 - Prob. 21QLPCh. 1 - What is the significance of the fact that some...Ch. 1 - Is it possible for two pieces of the same metal to...Ch. 1 - Prob. 24QLPCh. 1 - A cold-worked piece of metal has been...Ch. 1 - What materials and structures can you think of...Ch. 1 - Two parts have been made of the same material, but...Ch. 1 - Do you think it might be important to know whether...Ch. 1 - Explain why the strength of a polycrystalline...Ch. 1 - Describe the technique you would use to reduce the...Ch. 1 - What is the significance of the fact that such...Ch. 1 - Prob. 32QLPCh. 1 - It has been noted that the more a metal has been...Ch. 1 - Is it possible to cold work a metal at...Ch. 1 - Comment on your observations regarding Fig. 1.14.Ch. 1 - Is it possible for a metal to be completely...Ch. 1 - Prob. 37QTPCh. 1 - Prob. 38QTPCh. 1 - Plot the data given in Table 1.1 in terms of...Ch. 1 - A strip of metal is reduced from 30 mm in...Ch. 1 - Prob. 41QTPCh. 1 - How many grains are there on the surface of the...Ch. 1 - Prob. 43QTPCh. 1 - Prob. 44QTPCh. 1 - Prob. 45QTPCh. 1 - A technician determines that the grain size of a...Ch. 1 - If the diameter of the aluminum atom is 0.28 nm,...Ch. 1 - The following data are obtained in tension tests...Ch. 1 - Prob. 50QTPCh. 1 - Prob. 51QTPCh. 1 - Prob. 52QTPCh. 1 - Same as Prob. 1.39, but ASTM no. versus...Ch. 1 - By stretching a thin strip of polished metal, as...Ch. 1 - Draw some analogies to mechanical fiberingfor...Ch. 1 - Draw some analogies to the phenomenon of hot...Ch. 1 - Take a deck of playing cards, place a rubber band...Ch. 1 - Give examples in which anisotropy is scale...Ch. 1 - The movement of an edge dislocation was described...
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- Draw a stress vs strain rate curve for a shear thinning material. How does the viscosity of such a material change with time? What is an example of a shear thinning material?arrow_forwardA cylindrical specimen of brass material 11mm in diameter and 110mm long is elastically deformed in tension with a force of 7853N which produces a 4.25x10^-3mm reduction in specimen diameter. Calculate the Poissons ratio for this materialarrow_forward1. Explain the storage and loss modulus of viscoelastic materials in your own words. 2. Show that phase lag is equal to when considering purely viscous materials. Hint: Use Equations 6.1 and 6.2 provided in the introduction along with the strain rate question = (n) is the viscosity and represents the measurement of resistance to deformation with respect to time).arrow_forward
- From a microstructure point of view, how do elastic and plastic materials deformations occur?arrow_forward(2) Both slip and twinning account for plastic deformation. However, the two phenomena occur by different mechanisms. In a tabular form, compare slip versus twinning. Give 5 comparisons, without drawing Figures.arrow_forwardSince Creep is the time dependant deformation of a material, does temperature or stress play an important role?arrow_forward
- You are looking for properties of a new lubricant your company uses, but only have access to a manual that is written in a foreign language, so you can't read the headers of a table with the material properties. However, the units are all in standard SI symbols. Which quantity is (most likely) the surface tension? The one with units of m2/s The one with units of N/m The one with units of N-s/m2 The one that is m2/(s²"K) The one with units of kg/m3 QUESTION 4 A large helium balloon, which can be approximated as a cylinder with a length of 5 m and a diameter of 2 m, is moored in standard atmospheric air via a small rope. What is the tensile force on the cord? Consider helium's density to be 0.17 kg/m3 and neglect the weight of the rope and thin material that makes the balloon's walls. 16.2 N 637 N 26.2 N 79.7 N 159 Narrow_forwardsketch the following mechanical behavior on the same graph: linear elastic,linear elastic perfectly plastic, linear elastic linear hardening, linear elastic hardeningarrow_forwardA cylindrical specimen of brass that has a diameter of 15 mm, a tensile modulus of 100 GPa, and a Poisson's ratio of 0.35 is pulled in tension with a force of 40, 000 N. If the deformation is totally elastic and the original length is 120 mm, what is the final diameter of the specimen in mm?arrow_forward
- (B) For a brass alloy, the stress at which plastic deformation begins is 350 MPa, and the modulus of elasticity is 103 GPa. (1) What is the maximum load that may be applied to the specimen with a cross-sectional area of 135mm without plastic deformation? (2) If the original specimen length is 78 mm, what is the maximum length to which it may be stretched without causing plastic deformation?arrow_forwardA cylindrical specimen of brass that has a diameter of 20 mm, a tensile modulus of 110 GPa, and a Poisson's ratio of 0.35 is pulled in tension with a force of 40, 000 N. If the deformation is totally elastic and the original length is 120 mm, what is the final length of the specimen in mm?arrow_forwardList three engineering components / applications that, in your judgment, need high stiffness and low weight. What material choices would you consider for these applications? What is anisotropy? Explain with specific examples of materials and anisotropic properties.arrow_forward
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