b) Define what is meant by the R-ratio during a fatigue test. Draw a schematic of stress vs time for a loading cycle whe
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b) Define what is meant by the R-ratio during a fatigue test. Draw a schematic of stress vs time for a loading cycle whe
b) Define what is meant by the R-ratio during a fatigue test. Draw a schematic of stress vs time for a loading cycle where R=-0.5. Indicate the stress range, peak stress and mean stress. [5 marks]
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