Combined Beam-column Stresses of Aluminum-alloy Channel Sections
This is an NACA technical note from 1939, issued by the National Advisory Committee for Aeronautics, reporting structural tests on aluminum-alloy channel sections under combined bending and axial load for aircraft engineers and researchers. The photographs show laboratory test rigs with weights on lever arms, harness straps, a pin-ended column in a testing machine, and a labelled engineering drawing of a beam-column testing machine, giving a designer a plain view of mid-century materials-testing apparatus.
