An analysis was undertaken to arrive at a mathematical formula by which the shear strengths of honeycomb cores for sandwich constructions could be calculated. The analysis is partly empirical, being based upon data obtained from previous tests of plywood panels. It was applied successfully to honeycomb cores composed of resin-impregnated papers, but should be verified for materials greatly different before it is generally applied.nA general formula is suggested for use when the cell walls of the honeycomb cores buckle before or at failure. If the cell walls do not buckle, the specific shear strength is approximately constant for cores made of similar materials and having similar cell shapes.
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