Some of these parameters are demonstrated in รูปที่5 .
The heating rate was calculated based on the slope of the line between points A and B just before the point where the SHS reaction started.
Usually, it was between 540 and 580 องศาเซลเซียส.
The temperature gradient was measured as the difference between the temperature measured by thermocouples 5,4 and 3 .
The SHS ignition temperature was determined at the point where the second derivative of the heating curve was not zero.
The rate of SHS temperature increase at the point was calculated by the following relation: v1n = (Tn+1 - Tn-1)*30