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Strength Tests on Thin-walled Duralumin Cylinders in Torsion (1932)
NASA Technical Reports Server (NTRS) · leaf 16
Jk , length/radius ratio Fig.7 IJtun'ber of shear wriiifcles in circumference of cylinder.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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