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steels at low temperatures
THE FATIGUE PROPERTIES OF HIGHTEMPERATURE ALLOYS
6 other sections not shown
aircraft aluminium alloys applied austenitic bearing alloy bending fatigue bending stress components compressive stress corrosion fatigue decarburization diagram diameter direct stress duralumin effect ellipse ENDURANCE CYCLES endurance limit endurance ratios engineering fatigue behaviour fatigue cracks fatigue curve fatigue failure fatigue limit fatigue properties fatigue resistance fatigue strength fatigue stresses fatigue tests fillet welds flake graphite fracture frequency fuselage given graphite gust heat treatment hole Ib/sq increase load machine material mean stress metal method mild steel normal notch sensitivity index notched specimens number of cycles obtained occur oscillating pearlitic plastic deformation plate plotted pressure Proc reduced repeated stresses residual stresses reversed bending shear stress shot peening shown in Fig shows speed strength reduction strength reduction factor stress concentration stress concentration factor stress raiser stress range structure surface rolling Table tensile strength tensile stress test pieces test results tons/sq unnotched variation vibration wing wrought