Stability of Thin-Walled Tubes Under Torsion (1935)
NASA Technical Reports Server (NTRS) · leaf 11
of the specimens being so small, the thickness at different parts of the sheet undoubt- it was necessary to measure it with much more than edly cause a large part of the scatter in the final results. common accuracy. The instrument shown in figure 11 The variation in thickness over a tube was… … Figure 9.—Corner of aeronautical-structures laboratory at California Institute of Technology, showing 500,000 in.-lb. torsion-bending testing machine. was therefore constructed; it is 10 times as sensitive about 5 percent. As torsion failure occurs over most as an ordinary micrometer and proved to…
NASA Technical Reports Server (NTRS)
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