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Posttest

References

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Fracture Toughness of Ceramics Using the Vickers Indentation Crack Length Method

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If crack length doubles, K_ICwill:

a: Increase Explanation

Explanation

b: Decrease Explanation

Explanation

c: Remain constant Explanation

Explanation

d: Double Explanation

Explanation

Increasing hardness primarily leads to:

a: Larger cracks Explanation

Explanation

b: Reduced plastic zone Explanation

Explanation

c: Higher applied load Explanation

Explanation

d: Lower modulus Explanation

Explanation

The indentation fracture method is most suitable for:

a: Polymers Explanation

Explanation

b: Liquids Explanation

Explanation

c: Brittle ceramics Explanation

Explanation

d: Elastomers Explanation

Explanation

Poor surface polishing mainly affects:

a: Load magnitude Explanation

Explanation

b: Indenter geometry Explanation

Explanation

c: Crack length measurement Explanation

Explanation

d: Elastic modulus Explanation

Explanation

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