​​​​Callum O'Dwyer

 

 

Brittle - Ductile Temperature graphs display the amount of energy absorbed by a specimen following an impact test. Measuring the energy absorbed by the specimens will give a relative scale of toughness, as brittle fractures take much less energy to fail than a ductile failure.

 

These tests are taken over a range of temperatures to find the temperature range at which the brittle to ductile transition takes place.  

 

The graph to the right displays an ideal Brittle - Ductile temperature graph for a Charpy impact machine. For this project, a Hounsfield Balanced Impact Machine was used, but the principle and shape of the idealised curve remains the same.

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