SOLDERLESS WRAPPED CONNECTIONS PART II 



561 



Fig. 3 — Isochromatic lines for a square model 0.4 inches on a side wrapped 

 with nineteen turns of 0.050 inch copper wire with a constant load of 28 pounds. 



2 4 6 8 10 12 14 16 18 



STRAIN IN PER CENT 



Fig. 4 — Stress-strain recovery curves for copper wire. 



20 



22 



