FATIGUE STUDIES OF NON-FERROUS SHEET METALS 583 



NUMBER OF REVERSALS 



Fig. 4 — Relation of Fibre Stress to Reversals, High Brass Sheet, No. 24 

 B. & S. Gauge. 



60 



50 



2 40 



30 



20 



10 



A= 3 SPECIMENS REMOVED AT 

 117,000,000 REVERSALS 



o ANNEALED MATERIAL 



A 4N0S.HARD " 



a 10 



10* 10^ 



NUMBER OF REVERSALS 



Fig. 5 — Relation of Fibre Stress to Reversals, Alloy G Brass Sheet, No. 24 



B. & S. Gauge. 



