12 Wilson, Stress and Strain in Copper Bars. 



Test No. V. 



ANNEALED COPPER SPECIMEN. 



Initial length ^'s'\ Initial diameter '6225 Area '3039. 

 Value of ^ = -526. 



Load^ 

 tons. 



Strain 



a 



'=7 



Stress 

 (tons per sq. in.) 



Value of C 

 (Calculated). 



I '5 

 2*0 



2-5 

 3-0 



3"5 



•0218 

 •0382 

 •06x8 

 •0909 

 •1327 



5*043 

 6-832 



8735 

 10-769 



' 3*045 



37728 

 38-053 

 37-775 

 38-017 



37-742 



Me 



an value of C 



= 37-863 



Test No. VI. 



ANNEALED COPPER SPECIMEN. 



Initial length 5-5", Initial diameter -622, Area '3039. 

 Value of ;^ = '5i9. 



Load P 

 (tons). 



Strain 



Stress 

 (tons per sq. in. ) 



Value of C 

 calculated. 



I '5 



•0209 



5-039 



37-514 



2-0 



•0382 



6-832 



37-193 



2-5 



'0600 



8-720 



37-554 



3-0 



•0882 



10*742 



37-878 



3-5 



•1327 



13-045 



37-211 



M€ 



;an value of C 



= 37-470 



