Understanding Charpy Impact Test Results: Determining T1 and T2 Temperatures

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The discussion focuses on interpreting Charpy impact test results, specifically determining the transition temperatures T1 and T2 from a provided graph. T1 is defined as the temperature at which there is a 50% energy change between the upper and lower plateaus of the energy curve, while T2 corresponds to a 50% crystallinity change. Participants express concerns that the energy curve does not show the expected increase, indicating a gradual transition for the material, complicating the determination of these temperatures. The difficulty in identifying T1 and T2 highlights the challenges in analyzing the material's behavior under test conditions. Accurate interpretation of these results is essential for understanding the material's properties.
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hey guys i need help charpy impact test. i have attached my graph with the results we had. Does this seem correct? from the graph how do i determine the transition temperature T1 for the material where T1 is normally defined as the temperature corresponding to 50% of energy change between the upper and lower plateaux of the energy curve
and also determine a temperature T2 corresponding to 50% crystallinity change.
Please help
 

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in energy curve, it should be increasing, but it doesn't with your values, anyway it seems that the transition is gradual for that material, so it's quite difficult to determine the transition temperature.
 

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