Materials

1. Selection of materials for automotive,
aerospace, marine and defence applications
Dr.M.Suresh
Assistant Professor
KITS-Mechanical Engg

2. Criteria in selecting materials
• Performance requirements.
• Reliability requirements.
• Size, shape, and mass requirements.

3. MATERIALS IN THE AUTOMOTIVE INDUSTRY

4. MATERIALS IN THE AUTOMOTIVE
INDUSTRY
• Making cars, parts and components, along
with future trends, are steel, aluminum,
magnesium, copper, plastics and carbon fiber.

5. • In total, about 39 different types of basic
plastics and polymers are used to make an
automobile. More than 70% of the plastic
used in automobiles comes from four
polymers.

6. Basics On 7 Common Types of Plastic
1) Polyethylene Terephthalate (PET or PETE)
2) High-Density Polyethylene (HDPE)
3) Polyvinyl Chloride (PVC or Vinyl)
4) Low-Density Polyethylene (LDPE)
5) Polypropylene (PP)
6) Polystyrene (PS or Styrofoam)
7) Other.

7. • Identify the design requirements.
• Identify the materials selection criteria.
• Identify candidate materials.
• Evaluate candidate materials.
• Select materials.

8. • The most commonly used commercial
aerospace structural materials are aluminum
alloys, titanium alloys, high-strength steels,
and composites, generally accounting for
more than 90% of the weight of airframes.

9. Defence

10. • In defense industry, the use of ceramics is
mainly as an armour material. As tank
armour, alloy steels are the most commonly
used materials.