In your first assignment as a new engineer at a large jet enginemanufacturer, you are part of a team investigating a new generationof lightweight turbine engines for regional jet liners. In order toincrease efficiencies and improve performance, lightweightmaterials with significant toughness are needed. However, theoperating conditions include high temperatures and high stresses.Of the three categories of composites, which one would you selectfor further investigation in an engine inlet application wheretemperatures in the vicinity of 500°C are experienced?
1. polyethylene
2. metal matrix composite
3. iron-aluminide intermetallics
4. ceramic matrix composite
5. polymer matrix composite
