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 concluding that cracks originated due to a soft surface with a low yield point under repeated stress.
| Identifier | ExFiles\Box 76\3\ scan0108 | |
| Date | 22th May 1919 | |
| R.R. 235 B 1200 T (S.F. 673. 22-5-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2376 H12/EB251119. (Contd). -2- I consider that the failure is due to the soft surface having too low a Yield Point, so that repeated bending stress has tended to originate cracks from the vicinity of drill holes. HCH | ||