EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 41QTP
Repeat the calculations in Example 9.1 if (a) Nextel 610 fiber is used and (b) Spectra 2000 is used.
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Chapter 9 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 9 - Distinguish between composites and metal alloys.Ch. 9 - Describe the functions of the matrix and the...Ch. 9 - Name the reinforcing fibers generally used to make...Ch. 9 - What is the range in length and diameter of...Ch. 9 - List the important factors that determine the...Ch. 9 - Comment on the advantages and limitations of...Ch. 9 - What are the most commonly used matrix materials?...Ch. 9 - Describe the advantages of hybrid composites over...Ch. 9 - What material properties are improved by the...Ch. 9 - Describe the purpose of the matrix material.
Ch. 9 - What are the most common types of glass fibers?Ch. 9 - Explain the difference between a carbon fiber and...Ch. 9 - How can a graphite fiber be made electrically and...Ch. 9 - What is a whisker? What is the difference between...Ch. 9 - Describe the composition of boron fibers. Why are...Ch. 9 - Give a succinct definition of fiber, yarn, and...Ch. 9 - How do you think the use of straw mixed with clay...Ch. 9 - What products have you personally seen that are...Ch. 9 - Describe applications that are not well suited for...Ch. 9 - Is there a difference between a composite material...Ch. 9 - Identify metals and alloys that have strengths...Ch. 9 - What limitations or disadvantages do composite...Ch. 9 - Give examples of composite materials other than...Ch. 9 - Explain why the behavior of the materials depicted...Ch. 9 - Explain why fibers are so capable of supporting a...Ch. 9 - Do metal-matrix composites have any advantages...Ch. 9 - Give reasons for the development of ceramic-matrix...Ch. 9 - Explain how you would go about determining the...Ch. 9 - How would you go about trying to determine the...Ch. 9 - Glass fibers are said to be much stronger than...Ch. 9 - Describe situations in which a glass could be used...Ch. 9 - When the American Plains states were settled, no...Ch. 9 - By incorporating small amounts of a blowing agent,...Ch. 9 - Referring to Fig. 9.2c, would there be an...Ch. 9 - Calculate the average increase in the properties...Ch. 9 - In Example 9.1, what would be the percentage of...Ch. 9 - Calculate the percent increase in the mechanical...Ch. 9 - Calculate the stress in the fibers and in the...Ch. 9 - Repeat the calculations in Example 9.1 if (a)...Ch. 9 - Refer to the properties listed in Table 7.1. If...Ch. 9 - Plot the elastic modulus and strength of an...Ch. 9 - For the data in Example 9.1, what should be the...Ch. 9 - It is desired to obtain a composite material with...Ch. 9 - A rectangular cantilever beam, 100 mm high, 20 mm...Ch. 9 - What applications for composite materials can you...Ch. 9 - Using the information given in this chapter,...Ch. 9 - Would a composite material with a strong and stiff...Ch. 9 - Make a list of products for which the use of...Ch. 9 - Inspect Fig. 9.1 and explain what other components...Ch. 9 - Name applications in which both specific strength...Ch. 9 - What applications for composite materials can you...Ch. 9 - As with other materials, the mechanical properties...Ch. 9 - Developments are taking place in techniques for...Ch. 9 - As described in this chapter, reinforced plastics...Ch. 9 - Comment on your observations on the design of the...Ch. 9 - Make a survey of various sports equipment and...Ch. 9 - Several material combinations and structures were...Ch. 9 - It is possible to make fibers or whiskers with a...Ch. 9 - Describe how you can produce some simple composite...Ch. 9 - Gel spinning is a specialized process used in...Ch. 9 - Figure P9.65 shows a section of a...
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- What is the effective fiber diameter of a membrane filter with a pore size of 1 μm? The solidity is 0.15, the thickness is 150 μm, and the pressure drop is 5.0 cm Hg at U0 = 50 cm/s. (b) A filter has an effective fiber diameter of 2 μm, a solidity of 0.05, and thickness of 0.5 mm. The face velocity is 5 cm/s. Considering collection due to interception, impaction, and diffusion, calculate the penetration of 0.3 μm NaCl particles (ρp= 2.2 g/cm3) through the filter and the figure of merit.arrow_forwardBased on the graph below, reinforcing plastic with glass fibers results in: A. An increase in plasticity B. An increase in inelastic deformation C, An increase in stiffness D. A decrease in stiffnessarrow_forwardOriginal question: The nominal engineering constants of a unidirectional graphite epoxy ply are given in Table below for a fiber volume fraction of 60 percent. The fiber volume is reduced to 55 percent. Estimate the engineering constants for this reduced fiber volume fraction. New question needing to be answered: Repeat with a reduced fiber volume fraction of 40 percent representative of lower fiber volume fraction materials. Table:arrow_forward
- Consider Carbon/Epoxy with a fiber volume fraction of 70% and Ef = 379 GPa, Vf = 0.22, Em = 3.3 GPa, and Vm = 0.35. Compute E1, E2, V12, and G12 using the rule of mixtures (ROM).arrow_forwardAlice is conducting a tensile test on continuous fiber alignment compositesamples. She found that the results are different in the longitudinal andtransverse directions of the samples. Explain why this happens with the aid ofdiagram.arrow_forwardExplain the following fiber Materials in detail. (i) Aramid Fibers (ii) Alumina (iii) Carbon Fiberarrow_forward
- I need the solution of this question,please. Prove that the area fraction equal to volume fraction when using aligned fibers in composite materials.arrow_forwardb. i. Calculate the tensile modulus of elasticity of a unidirectional Kevlar-49 fibers epoxy composite material that contains 63% by volume of Kevlar 49 fibers and is stressed under isostrain conditions. The Kevlar 49 fibers have a tensile modulus of elasticity of 189.8 GPa and the epoxy matrix a tensile modulus of elasticity of 3.8 GPa.arrow_forwardPlease written by handarrow_forward
- Answer whats in the image, please and thank youarrow_forwardPlease calculate UD composite material averaged mechanical constants EL: ET; VET. Gur Fiber and matrix properties are: E, = 240GP3; v, = 0.26; E = 2.6GPA; v = 0.38; fibers volume fraction V, = 0.48 Please use different methods and compare obtained results.arrow_forward1) Assume that a lamina is made using glass fiber and epoxy with the following properties: Er = 74 GPa, v, = 0.27 Em = 6.3 GPa, vm = 0.31 a) Using Rule of Mixtures, calculate and plot the elastic properties of the lamina (E1, E2, G12, v12 ,V21) as a function of fiber volume fraction. b) Comment on the observed trends and maximum values of these properties as a function of volume fractionarrow_forward
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