Browsing by Author "Webb, J."
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Item Open Access The measurement of biaxial strains in coated fabric materials using the disc-replica method(College of Aeronautics, 1969-09) Webb, J.; Richards, D. M.A method of measuring biaxial strains in coated fabric type materials is presented whereby the strain is deduced from the distortion of a circular impression made on the material. The impression is placed on the material when loaded, enabling all measurements to be made with the material in its relaxed, unloaded, state.Item Open Access Optimum stiffness inflated mattress beams(College of Aeronautics, 1969-09) Webb, J.This report considers primarily the relatively short cantilever type of inflated matresss beam, currently being employed as sidebody structure on some hovercraft. The rib pitch for optimum stiffness/weight of such beams is determined, and it is shown that thin ribs, closely pitched, with relatively thick skins provide the most efficient structures.