What defect appears in sheets or strips due to segregation in layers?

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Multiple Choice

What defect appears in sheets or strips due to segregation in layers?

Explanation:
Segregation across the thickness creates distinct layers with different compositions or phases, which weakens the bonding between those layers. Under stress, cracks tend to follow these interfaces, producing a laminar fracture pattern called crack lamination. This makes crack lamination the defect that specifically appears as cracks along layered regions in sheets or strips, rather than a general increase in brittleness, degradation, or hardness.

Segregation across the thickness creates distinct layers with different compositions or phases, which weakens the bonding between those layers. Under stress, cracks tend to follow these interfaces, producing a laminar fracture pattern called crack lamination. This makes crack lamination the defect that specifically appears as cracks along layered regions in sheets or strips, rather than a general increase in brittleness, degradation, or hardness.

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