TllROW-TESTING MACHINE ECU REVERSALS OF MEAN STRESS. 
201 
Table V.—Annealed Cast Steel. 
Set A. 
Oscillatory weight, 12'42 lbs. Diameter of Specimens, ’245 inch to '25 inch. 
1 
Number. 
Revolutions per 
minute. 
Maximum 
stress. 
Minimum 
stress. 
Range of 
stress. 
Reversals fox- 
rupture. 
1 
2382 
10-22 
9-16 
19-38 
35,680 
2 
2313 
9-35 
8-38 
17-73 
50,900 
o 
O 
2303 
9-51 
8-50 
18-01 
36,900 
4 
2226 
8-66 
7*74 
16-40 
97,000 
5 
2216 
8-94 
7-97 
16-91 
47,700 
6 
2117 
7-70 
6 - 85 
14-55 
273,000 
7 
2116 
7-75 
6-93 
14-68 
95,200 
8 
2034 
7-21 
6-40 
13-61 
472,000 
9 
1963 
6-77 
6-00 
12-77 
402,000 
10 
1892 
6-29 
5 - 56 
11-85 
1,327,000 
Set B. 
Oscillatory weight, 
4402 lbs. Diameter of Specimens, '246 inch to '248 inch. 
11 
2215 
13-06 
11-56 
24-62 
37,700 
12 
2163 
12-56 
11 • 09 
23-65 
49,400 
13 
2076 
11-46 
10-07 
21-53 
86,700 
14 
2012 
10-91 
9-56 
20 • 47 
129,300 
15 
1972 
10-37 
9-08 
19-45 
189,300 
16 
' 1917 
9 • 95 
8-70 
18-65 
337,500 
17 
1838 
9-17 
7-98 
17-15 
687,400 
Set C. 
Oscillatory weight, 
31'23 lbs. Diameter of Specimens, '248 inch to '25 inch. 
18 
1975 
13-73 
1:2-05 
25-78 
31,200 
19 
1841 
11-98 
10-44 
22 • 42 
107,400 
20 
1694 
10-10 
8-72 
18-82 
341,600 
21 
1650 
9-74 
8-39 
18-13 
2,270,000 
Set D. 
Oscillatory weight, 43'77 lbs. Diameter of Specimens, '248 inch to ‘240 inch. 
22 
1474 
13-46 
11-60 
25,-06 
92,600 
23 
1395 
12-19 
10-41 
22-60 
157,000 
24 
1363 
11-59 
9-89 
• 21-48 
265,400 
25 
1326 
11 -07 
9-40 
20-47 
718,000 
26 
1303 
1 
10-64 
9-00 
19-64 
918,000 
2 r 2 
