If the skins are peeled from the core a sandwich structure, Ask an Expert

Engineering

If the skins are peeled from the core, a sandwich structure loses its strength and stiffness.

This can occur under

- wave-slamming in fast ferries
- rapid depressurisation of an aircraft

The single cantilever beam (SCB) is used for thick-skinned structures.

The lower skin is loaded forcing a crack along the skin-core interface. The force-displacement (P-δ) curve and crack lengths, a, are recorded The compliance, C, is assumed to follow:

Typical values:

Glass fibre epoxy/balsa 900 J/m²

Carbon fibre/PVC foam 2000 J/m²

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Other Engineering, Engineering

Category:- Other Engineering
Reference No.:- M9506203

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