Manufacturing Engineering And Technology
7th Edition
ISBN: 9789810694067
Author: Stephen R. Schmid (author) Serope Kalpakjian (author)
Publisher: Pearson Education Orphans
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Textbook Question
Chapter 9, Problem 40QTP
Calculate the stress in the fibers and in the matrix in Example 9.1. Assume that the cross-sectional area is 0.25 in2 and Pc = 500 lb.
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Chapter 9 Solutions
Manufacturing Engineering And Technology
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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- Compute the ultimate strength for a composite which uses Aramid fibers and Polyester matrix. The volume fraction of fibers is 45 % and matrix is 55 %. Note- use chart in imagearrow_forwardCalculate the persistence length that can be obtained by bending the polymer to form a 90 degree turn, and calculating the length of the segment that would give a bending energy of the order of the thermal energy kBTarrow_forwardExplain how macroscopic plasticity occurs in polymers from the point of view of microscopic mechanisms (covered in the chapters indicated in the Callister book). (maximum of 3 lines, not counting the space for possible schematic figures).arrow_forward
- What typically happens to the strength level of a polymer that has undergone cold drawing? Why?arrow_forwardThe compressive strength of aramid fiber is about one-eighth of its tensile stress. Estimate the smallest diameter of a rod on which the aramid fiber can be wound without causing kinks, etc. on its compression side.arrow_forwardRegarding amorphous plastics, explain why they tend to have higher tensile strength when deformed compared to when not. please include an illustrationarrow_forward
- Thermal plastics are stronger than thermoset plastics.arrow_forwardA polymer straight propeller with a diameter = 15in(measured diameter = 382mm) and pitch = 5.6in(142.24mm). A drawing is given below for the propeller. Explain the diameter of the propeller, pitch of the propellerand the drawing given.arrow_forwardEstimate the transverse modulus (ET), of the glass-epoxy composite with a fiber volumefraction of 25%. Modulus of elasticity of glass fiber and epoxy is 70 GPa, and 3.5 GPa,respectively. Assume that fibers have a circular cross-section.arrow_forward
- A reinforced plastic sheet is to be made of a matrix with a tensile strength of 60MN/m^2 and a continuous glass fibre with a modulus of 76GN/m^2.If the resin ratio by volume is 70% and the modular ratio of the composite is 25, estimate the tensile strength and modulus of the composite.arrow_forwardIdentify which is typically tougher: a semicrystalline or an amorphous polymer.arrow_forward:. Differentiate between Thermoplastics and Thermosets plastics. Explain in detail the uses of these plastics in the world.arrow_forward
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composite-materials; Author: Tonya Coffey;https://www.youtube.com/watch?v=Vu6ik-bcKf4;License: Standard youtube license