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RA nov 2007<br />

Glasser og keramer<br />

• er sprø – dvs. tåler ikke strekkrefter, heller ikke bøying<br />

strekk<br />

• Sprø materialer tåler mye høyere trykk enn strekk, typisk<br />

15 ganger mer for mange keramer<br />

• Ved bruk av metaller ønsker man å utnytte duktiliteten<br />

fasthet 21

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