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Fatigue Strength of Airplane and Engine Materials (1934)
NASA Technical Reports Server (NTRS) · leaf 32
N.A.C.A. Technical Memorandum ITo. 743 Figs. 1,6 109 108 105 106 10 104 io- Stress cycles a, Monel metal, ^ S3 kg/mm2 "b, 0.13:1C-steel, dfe = 47 kg/ram2 c, Nickel, 03 = 53 kg/mm2 ^ d, Refined duralSojj = 46 " 8 e, Pure aluminum, 03 = 17 kg/mm* f, Pine wood(Xief er) >6g=17kg/mm ugure 1.-Tension… … 1200 3000 12000 6000 30000 120000 600000 ' 3 Frequency Figure 6.-Reversal strength plotted against vibration frequency.NASA Technical Reports Server (NTRS)
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