First lecture in the second semester

1. 11.02.10

9. The U. S. Air Force B-2 advanced “stealth” bomber, which is constructed to a large extent of advanced composite materials

11. METALS CERAMICS POLYMERS Medium hard Extremely hard Soft High density Low density Very low density Medium to high m.p High to very high m.p Low m.p Medium to high elastic modulus Very high elastic modulus Low elastic modulus Reactive Unreactive Very reactive Ductile Brittle Very ductile

18. Failure due to fatigue Failure due to creep