The Crinkling Strength and the Bending Strength of Round Aircraft Tubing (1938)
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knife edges on the and was loaded symmetrically at the third-points until lower ends of the hangers and was itself loaded through the bending moment in the middle portion became a a knife edge at the center by the movable head of a maximum. It was desired to obtain failure in a part boam-and-poisc… … Figure 6.—Test to determine bending strength. 0 to 2,000 and 0 to 20,000 pounds. The specimen was centrated loads. In order to effect this condition, the usually cut 19 diameters long, the ends were plugged, loads were applied through stiff clamps B, which (it and it was supported on knife edges D…
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