Tests on duralumin columns for aircraft construction (1924)
NASA Technical Reports Server (NTRS) · leaf 6
N.A.G.A. Technical Note No.208 Fig.2 … Fig.2 Compression tests mark "B" heat treated duralumin columns. ColumfiPtested as pin ended struts. Least radius of gyration is about axis of non-symmetry.
NASA Technical Reports Server (NTRS)
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