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).
Failure analysis report on a welded high carbon cast steel Wraith spring pot bracket from a bump rig test.
| Identifier | ExFiles\Box 9\5\ 05-page198 | |
| Date | 13th April 1938 | |
| 646. To H1. from Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}8/AP.13.4.38 FAILURE - WRAITH SPRING POT BRACKET. Herewith a section cut from the above piece which failed on the Bump Rig. This piece is made of a high carbon cast steel and has been welded. Can you say, from an examination of the specimen at the points A, B, and C, whether the welding has weakened the metal, or not. The point A, is close to the weld and it is here failure apparently started; and at C, the metal did not fail. There was no welding close to B. A B C Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||