COMPLEX STRESS DISTRIBUTIONS IN ENGINEERING MATERIALS, 405 
TABLE II. 
ALTERNATING Torsion. Sonrp Sprctmen A7 (0-12 ppr Cent. CARBON STEEL). 
Ranges of Strain (at Skin) which had become constant at certain Ranges of Stress.* 
Quantities in columns 4 and 5 are plotted in Fig. 20. 
1 2 * 1 tae 5 
Elastic Limit) Range of Range of Ye vere 
Stress. Strain at Skin F | Shear Strain ines i 
Tons per | Cms. on (see p. 389) | at Skin Bian 
sq. in. scale = R =FxR TEGa es geo 
5-60 9-56 1°32)K10 | | 1°26 x10") +6735 
about 10-96 | 1-445 ,, 6-65 
| 12-24 | 1°615x «, 6-90 | 
is 1855 | 1-785 x ,, ple P| 
14-67 | 1°936 x 5, 7:40 
* Ranges of stress calculated by usual formula for perfectly elastic condition. 
For data of columns 1, 2, and 5, see Proc. Inst. Mech. Eng., Feb. 1917. 
