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Which mechanical vulnerability increases for Mughal-era pietra dura inlay panels as thermal cycling expands subsurface mortar?

A)Delamination of individual stone tesserae
B)Oxidation of metallic frame supports
C)Dissolution of the calcite matrix
D)Increased compressive stress on inlays

💡 Explanation

Repeated expansion stresses caused by thermal cycling leads to differential movement; this increases the risk of interfacial debonding via fracture propagation because adhesive strength weakens over time, rather than compressive strengthens, therefore delamination is likelier.

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