Assignment 6

ASSIGNMENT # 6

 (TO BE SUBMITTED ELECTRONICALLY VIA BLACKBOARD)

Each question carries 5 points

The assignment will be graded out of a possible 100 points

Questions based on Chapter 9 & 14 from DeGarmo 11th edition.

1.How might plastics be defined from the viewpoints of chemistry, structure, fabrication, and processing? (CH9 RQ3). CH9 RQ 3 refers to the third question 3 at the end of Chapter 9 in DeGarmo 11th edition.

2.Describe the mechanism by which thermoplastics polymers soften under heat and deform under pressure. (CH9 RQ10)

3.How do thermosetting polymers respond to subsequent heating? (CH9 RQ15)

4.What is the unique mechanical property of elastomeric materials, and what structural feature is responsible for it? (CH9 RQ38) 

5.What are some outstanding physical properties of ceramic materials? (CH9 RQ44)

6.What is the common name given for ceramic material in the noncrystalline, or amorphous, state? (CH9 RQ47)

7.What are cermets, and what properties or combination of properties do they offer? (CH9 RQ55)

8.What are the basic features of a composite material that influence and determine its properties? (CH9 RQ66)

9.What are the primary roles of the matrix in a fiber-reinforced composite? (CH9 RQ73)

10.What are hybrid composites? (CH9 RQ85)

11.Why are the fabrication processes applied to plastics, ceramics, and composites often different from those applied to metals? List three key differences in the fabrication process? (CH 14 RQ1)

12.How does the fabrication of a thermoplastic polymer differ from the processing of a thermosetting polymer? (CH 14 RQ2)

13.What are some of the attractive properties of plastics that favor their selection? What are some of the common limitations? (CH 14 RQ28)

14.List three cautions regarding the use of standard test data when designing with plastics? (CH 14 RQ29)

15.Name three elastomers and state two uses for each.

16.What are the two basic classes of ceramic materials, and how does their processing differ? (CH 14 RQ42)

17.How are glass fibers produced? (CH 14 RQ44)

18.List and explain five special design considerations for ceramic components? (Page no. 364 in Text book)

19.List several fabrication processes for fiber-reinforced products that are essentially the same as for unreinforced plastics. (CH 14 RQ60)

20.Discuss some of the concerns when cutting or machining fiber-reinforced composites. (CH 14 RQ77)