From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Continuation of a test report detailing load, deflection, and weight measurements of H and Box section pieces.
| Identifier | ExFiles\Box 49\4\ Scan043 | |
| Date | 21th May 1919 | |
| H.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. Contd. -2- EH1/LG21.5.19. load. Deflection. Permanent set. Deflection. Permanent set. lbs. down side down side down side down side 18 .063" .058" .007" .003" .071" .060" .012" .002" 19 .068 .062 .009 .004 .076 .064 .015 .003 20 .078 .070 .015 .008 .088 .070 .022 .007 21 .098 .085 .015 .015 .110 .082 .040 .018 22 .150 .110 .040 .038 .153 .108 .082 .031 23 .205 .130 .123 .073 slow collapse at 23½ lbs. slow collapse at 24½ lbs. Attached herewith is blue print shewing the fixture in which the test pieces were held when they were loaded up. The deflection both down and sideways was measured at the extreme end of the test pieces where the load was applied. The weights of the "H" section pieces are:- 1. 10.22 grams. 2. 10.27 grams. The weights of the Box section pieces are:- 1. 9.95 grams. 2. 9.97 grams. We think the slight extra weight on the "H" section pieces is in the end which is left for clamping purposes. The material these pieces were made of is M.S. The heat treatment is identical in all the test pieces. EH. | ||