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).
Material fatigue test record for an aluminum alloy, conducted on an Upton Lewis Machine.
| Identifier | ExFiles\Box 37\4\ scan 093 | |
| Date | 2nd June 1917 | |
| UPTON LEWIS MACHINE TEST NỌ: G MARK: H DATE: '2-6-17 MATERIAL: METAL BY MR HALL STATE: SECTION: 1" x 1/4" DIST. BETWEEN JAWS: 1/4" THROW OF CRANK: 3/4" SPEED R.P.M.: 106 SPRINGS: 4 1/2 TOTAL NỌ OF REVS. OF DIAGRAM: 32 PER INCH THE METAL SUGGESTED BY MR HALL CONTAINING APPROXIMATELY 94.5% OF ALUMINUM, 2.5% TO 5.5% OF COPPER, 1 TO 1.5% OF ZINC, .8 TO 1.5% OF ANTIMONY, & .10 TO .15% NICKEL. | ||