EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 9780100793439
Author: KALPAKJIAN
Publisher: YUZU
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Textbook Question
Chapter 19, Problem 41QLP
Construct a table that lists the main manufacturing processes described in this chapter. Indicate those that can be used for (a) thermoplastics, (b) thermosets, and (c) composite materials.
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Differentiate thermoplastics and thermosetting plastics with example materials .
(b) Which of the following plastic and composite materials processing is most
suitable for the application of polymer automotive body panel? Explain how the
selected manufacturing process selected can be used to produce the product shown
in Figure 1.2 below
• Injection Moulding
• Reaction injection Moulding (RIM)
• Blow Moulding
• Rotational Moulding
• Thermoforming
• Compression Moulding (CM)
• Transfer Moulding (TM)
• Casting
• Foam Moulding
SULIT
SULIT
(BMCG 2323)
Figure 1.2 Example of polymer automotive body panel
Regarding amorphous plastics, explain why they tend to have higher tensile strength when deformed compared to when not. please include an illustration
Chapter 19 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 19 - What are the forms of raw materials for processing...Ch. 19 - What is extrusion? What products are produced by...Ch. 19 - Describe the features of an extruder screw and...Ch. 19 - How are injection-molding machines rated?Ch. 19 - What is (a) a parison, (b) a plastisol, and (c) a...Ch. 19 - How is thin plastic film produced?Ch. 19 - List several common products that can be made by...Ch. 19 - What similarities and differences are there...Ch. 19 - Explain the difference between potting and...Ch. 19 - What is thermoforming?
Ch. 19 - Describe runner, gate, sprue, and well.Ch. 19 - Describe the advantages of cold-forming plastics...Ch. 19 - What are the characteristics of filament-wound...Ch. 19 - Describe the methods that can be used to make...Ch. 19 - What is pultrusion? Pulforming?Ch. 19 - How are very thin plastic film produced?Ch. 19 - What process is used to make foam drinking cups?Ch. 19 - If a polymer is in the form of a thin sheet, is it...Ch. 19 - How are polymer fibers made? Why are they much...Ch. 19 - What are the advantages of coextrusion?Ch. 19 - Explain how latex rubber gloves are made.Ch. 19 - Describe the features of a screw extruder...Ch. 19 - Explain why injection molding is capable of...Ch. 19 - Prob. 24QLPCh. 19 - Explain the reasons that some plastic-forming...Ch. 19 - Describe the problems involved in recycling...Ch. 19 - Can thermosetting plastics be used in injection...Ch. 19 - Inspect some plastic containers, such as those...Ch. 19 - An injection-molded nylon gear is found to contain...Ch. 19 - Explain why operations such as blow molding and...Ch. 19 - Prob. 31QLPCh. 19 - Typical production rates are given in Table 19.2....Ch. 19 - What determines the cycle time for (a) injection...Ch. 19 - Does the pull-in defect (sink marks) shown in Fig....Ch. 19 - What determines the intervals at which the...Ch. 19 - Identify processes that would be suitable for...Ch. 19 - Identify processes that are capable of producing...Ch. 19 - Inspect several electrical components, such as...Ch. 19 - Inspect several similar products that are made of...Ch. 19 - What are the advantages of using whiskers a...Ch. 19 - Construct a table that lists the main...Ch. 19 - Estimate the die-clamping force required for...Ch. 19 - A 2-Iitcr plastic beverage bottle is made by blow...Ch. 19 - Consider a Styrofoam drinking cup. Measure the...Ch. 19 - In Fig. 19.2, what flight angle, , should be used...Ch. 19 - Make a survey of a variety of sports equipment,...Ch. 19 - Explain the design considerations involved in...Ch. 19 - Give examples of several parts suitable for insert...Ch. 19 - Give other examples of design modifications in...Ch. 19 - With specific examples, discuss the design issues...Ch. 19 - Die swell in extrusion is radially uniform for...Ch. 19 - Inspect various plastic components in a typical...Ch. 19 - It is well known that plastic forks, spoons, and...Ch. 19 - Prob. 55SDPCh. 19 - Make a survey of the technical literature, and...Ch. 19 - Prob. 57SDPCh. 19 - Prob. 58SDPCh. 19 - Prob. 59SDPCh. 19 - Examine some common and colorful plastic poker...Ch. 19 - Obtain different styles of toothpaste tubes,...Ch. 19 - By incorporating small amounts of blowing agent,...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Illustrate the difference between crystalline and amorphous polymers structure and explain the effect of this difference on their properties and applications. Show examples of polymers that are not crystalline or semi-crystalline.arrow_forwardWhat is polymers? Long and clear Explanation thanks. (Topic from Engineering Materials)arrow_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
- Classify the types of composite materials based on the matrix and reinforcement materials. Briefly explain the main characteristics of Polymeric Matrix Composites (PMC) and their engineering applications.arrow_forwardDiscuss the significance of the glass-transition temperature, Tg, in engineering applications. Describe the reaction injection molding process and why it's limited to thermosetting polymers.arrow_forwardDrawing on the discussion of the production of polyester textiles. Give a detailed and compelling flowchart of the process, beginning with the raw materials and ending with the finished product, and describe each step of the process individually. It would be helpful if you included illustrations, figures, and animations.arrow_forward
- Given the table below and your judgement for extreme operational conditions, select polymers for the following applications respectively: a dry ice bucket (operating temperature of -78C), a teeth aligner, a hair dryer (operating temperature range of 60-80C) and a phone case. Table 15.2 Melting and Glass Transition Temperatures for Some of the More Common Polymeric Materials Material Polyethylene (low density) Polytetrafluoroethylene Polyethylene (high density) Polypropylene Nylon 6,6 Polyester (PET) Poly(vinyl chloride) Polystyrene Polycarbonate U Glass Transition Temperature [°C (°F)] -110 (-165) -97 (-140) -90 (-130) -18 (0) 57 (135) 69 (155) 87 (190) 100 (212) 150 (300) a. b. c. Nylon, PET, HDPE, PVC Dd. HDP , LDPE, LDPE, PTFE e. LDPE, PTFE, Nylon, polypropylene Melting Temperature [°C (°F)] 115 (240) 327 (620) 137 (279) 175 (347) 265 (510) 265 (510) 212 (415) 240 (465) 265 (510) PTFE, HDPE, HDPE, polypropylene Polypropylene, PET, PTFE, Polypropylenearrow_forwardPlease tell in detail about macroscopic composites.arrow_forwardSuggest two types of polymerizations for most plastics. Explain both typesarrow_forward
- 1. Do you think that Rapid Prototyping or medical scaffolding is a better application for MEX? Explain. 2. Why does the MEX process work better with amorphous polymers compared to crystalline polymers?arrow_forwardWhy are some polymers hygroscopic? How are the mechanical properties affected bymoisture, explain by giving specific examples of polymers and mechanical properties.arrow_forwardLean manufacturing is a concept that is now widely implemented within manufacturing. Discuss how lean manufacturing can help in improving the performance of Polymer production facility. Give your views in at least five areas for improvement and or implementation.arrow_forward
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What is Rapid Prototyping?; Author: Formlabs;https://www.youtube.com/watch?v=-TDn25K-Jh4;License: Standard youtube license