Experimental Study of Torsional Column Failure
A 1939 NACA Technical Note (No. 733) from the NASA Technical Reports Server, written for aeronautical engineers and issued as an experimental report on torsional failure in columns. The plates are mostly photographs of test rigs with a steel column specimen mounted in a loading frame, with figure captions printed beneath each view. For a designer the pictures offer raw industrial structure: vertical steel members, cross-bracing, and clamped test apparatus shot in a dim lab.
