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Aviation History
1938
1938 - 0341.PDF
FEBRUARY 3, 1938. ADVERTISEMENTS. FLIGHT. SCIENTIFIC CONTROL N°4 COMBINED STRESS FATIGUE TESTING The N.P.L. Combined Alternating Fatigue Stress machine is used for obtaining data on the effects of various combinations of bending and torsional fatigue stresses on Hiduminium alloys, which data, when used in conjunction with other static and dynamic properties, provides information for engineering design. HIGH DUTY ALLOYS LTD. SLOUGH <\ \ £ T.G.S.
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