SOLDERLESS WRAPPED CONNECTIONS — PART II 



575 



tive or tensile, while if p is inside the center line the strain is negative 

 or compressive. From measurement of Fig. 16, it appears that the 

 equivalent inner cylinder that corresponds to the radius of the center 

 of the wire is about 3.0 times the wire diameter and hence the strain 

 should be 25 per cent tensile at the outer edge and 25 per cent compres- 

 sive at the inner edge. The addition of a tension of 13 per cent due to 

 the winding force makes the outer strain 38 per cent and the inner one 

 12 per cent compressive which are close to the values found. This indi- 

 cates that the tensile strain is somewhat higher in the short leg than 

 in the long one. The same tensile strain occurs around the outside periph- 

 ery of the wire opposite the corners of the terminal, but a very high 



Fig. 17 — Enlargement of one corner of the photograph of Fig. 16. 



