46 



133 



TABLE 6 

 Data on Circular Plates 



Material 



Number of 

 Plates 

 Tested 



a = Radius 

 Inches 



h = Thickness 

 inches 



(Tu = Ultimate 

 Stress* 

 lb/in= 



Copper 



Furniture Steel 



Furniture Steel 



Medium Steel 



High Tensile Steel 



Special Treatment Steel 



2.56 

 2,56 

 10,25 

 10.25 

 10.25 

 10.25 



0.016 



0.030 



0.109 

 0.125 and 0.063 

 0.125 and 0.063 

 0.125 and 0.063 



39.625 

 1*9,825 

 '+9.825 

 73.500 

 87.500 

 125,000 



The ultimate stress is taken as the maximum load divided by the original area. 



1.0 



0.9 



in 0.8 



0.7 



0.6 



0.5 



0.1 



0.2 



Strom, e 



0.3 



0.4 



Figure 37 - Stress-Strain Curves for Various Metals 



