This document discusses the material selection process for a group project to design a universal electrical outlet. It begins by outlining the product requirements, including its intended function of supporting 6 sockets and sliding in/out of a table, costing less than 200 baht, and having a modern appearance. Next, it examines the interacting components and manufacturing process. It then evaluates the performance requirements and suitable materials based on charts of material properties. Several plastic materials are considered based on their mechanical, electrical and thermal properties as well as cost. Finally, the document discusses suitable manufacturing processes and estimates the per-unit manufacturing cost.

1. PROJECT MATERIALS SELECTION
Group 19 NJT2C

2. PRODUCT ANALYSIS
 - What is the function of your product?
 - How do the components interact?
 - How is it made?
 - What should it cost?
 - What should it look like?

3.  What is the function of your product?
-using with 6 sockets
-can slide in and slide out
-have switch
-safety with fuse
- a universal electrical outlet
-installation with table
- power less than 2000 W

4. HOW DO THE COMPONENTS INTERACT?
1.Puller
2.Outer tube
3.Switch and sockets
4.Holding plate
5.Hole
6. Pin
7.Outer tube
8. Fuse

5.  How is it made?

6.  What should it cost?
-Less than 200 Bath
 What should it look like?
- modern
- meet the design specifications
- It actually works

7. MATERIAL SELECTION
o - What are the performance requirements?
o - Based on the material selection chart, what
materials can you use?
o - What are their mechanical, electrical, and
thermal properties?
o - How much do they cost?
o - Can they be recycled?

8. WHAT ARE THE PERFORMANCE REQUIREMENTS?
Requirement properties
Must conduct electricity Electrical conductivity
Light and stiff Low density and high strenght
Cheap Cost per kg
Non oxidation Non-ferrous materials

9. BASED ON THE MATERIAL SELECTION CHART, WHAT
MATERIALS CAN YOU USE?
 Young` s Modulus - Density

10. Strength -Density

11. Streng - Toughness

12. Strength – Max.Service Temperature

13. Resistivity -Cost

14. WHAT ARE THEIR MECHANICAL, ELECTRICAL, AND
THERMAL PROPERTIES?
Mechanical Density :1000-2000, kg /m3
Properties Young`s modulus : 2 – 10 Gpa
Strengh :50 – 80 Mpa
Thermal Properties Temperature range : 0 – 200 Celcius
Electrical Resistance range :10^14 - 10^15 Ωm
Properties

15. HOW MUCH DO THEY COST?

16. CAN THEY BE RECYCLED?

17. MANUFACTURING PROCESS SELECTION
o - What processes are suitable to your chosen
materials?
o - What is the process technical performance?
o - What is the manufacturing cost?

18. WHAT PROCESSES ARE SUITABLE TO YOUR CHOSEN
MATERIALS?
Model Product
For Business

19. WHAT IS THE PROCESS TECHNICAL PERFORMANCE?
-Have a required smoothness.
-Have a required dimension.
-Have a high rate of produce per hour.

20. WHAT IS THE MANUFACTURING COST?
We will produce 10,000 piece
estimated cost
Material cost about 50/piece
Startup cost (mould) depen on batch size about 5
Running cost about 20
Manufacturing cost about 75 baht

21. MATERIAL SELECTION DECISION
Polymers
PVC (Polyvinyl Chloride)

22. Thank you