Rolls-Royce Archives
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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).
Sketched graph showing the probable effect of cold working on a shaft, plotting torque against wind-up angle.

Identifier  ExFiles\Box 170\3\  img008
Date  30th January 1936 guessed
  
PROBABLE EFFECT OF COLD WORKING
CHART IS ONLY SKETCHED
Y-AXIS LABEL: TORQUE LBS/INS
Y-AXIS VALUES: 28000, 24000, 20000, 16000, 12000, 8000, 4000
X-AXIS LABEL: WIND UP ANGLE . RADIANS
X-AXIS VALUES: 0, 100, 200, 300, 400, 500, 600, 700, 800
TEXT ON GRAPH:
FIRST YIELD
19530 LBS ins
AT .20° WIND UP

25000 LBS. INS
AT .45°
WIND UP

RIGHT SIDE TEXT:
NEGATIVE STRESS ON SURFACE OF SHAFT
WHEN RELEASED
  
  


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