field of maximum temperatures over all time steps

Hello everybody,


how do I get the field of maximum temperatures over all time steps in a transient heat transfer simulation (Comsol 3.5)?

I am simulating a welding process using the heat transfer module. I can already visualize the geometry of the weld pool at any time of the process using the isosurface plot of the melting temperature. Nevertheless I am actually interested in knowing the final geometry of the weld seam, which is the sum of all points that have ever (= in any timestep) reached or exceeded melting temperature.

My best idea so far was to somehow calculate the "field of maximum temperatures over all time steps" and then again use the isosurface plot. However I couldn't find out how to get the maximum temperature at every point. Any suggestions how to do it? Is it possible at all?

In case you have another (perhaps more practical) idea how to get the geometry of the weld seam, please let me know as well.


Thanks for reading and for your help in advance!

Regards,
Johannes