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Beam and Torsion Tests of Aluminum Alloy 61S-T Tubing

出版	National Advisory Committee for Aeronautics, 1942
URL	http://books.google.com.hk/books?id=c8wxHAAACAAJ&hl=&source=gbs_api

註釋The moduli of failure of bending, as determined by tests in which the tubing was loaded on the neutral axis at the one-third points of the span, were found to bear an approximately linear relationship with diameter-thickness ratio and were practically independent of span within the limits investigated. Empirical equations are given describing the relations obtained.