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ASTM D7249

Standard Test Method for Facing Properties of Sandwich Constructions by Long Beam Flexure.
The standard covers the determination of coating properties of flat sandwich constructions subjected to bending in such a way that the applied moments produce curvature of the sandwich cladding planes and give rise to compressive and tensile forces in the claddings. Permitted core material forms include those with continuous bonding surfaces (such as balsa wood and foams) as well as those with discontinuous bonding surfaces (such as honeycomb).

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