Results of tests made at Battelle Memorial Inst, on specimens, each having theoretical stress-concentration factor of 4.0; tests were run at 0 and 20,000-psi nominal mean stress; comparison with results previously obtained.
Fatigue strengths of aircraft materials -- Axial-load fatigue tests on edge-notched sheet specimens of 2024-t3 and 7075-t6 aluminum alloys and of SAE 4130 steel with notch radii of 0.004 and 0.070 inch
NASA -- Tech Note
1959
25 pages
Report
English
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