Fatlab is a postprocessing tool for fatigue analysis developed in Matlab. It is meant for fatigue analysis from FE analyses carried out in either ANSYS or SolidWorks Simulation (other formats can easily be added).

In principle Fatlab determines the stress-time history for all nodes in the model from the inputs supplied to the program, then performs cycle-counting and calculates the damage sum using Palmgren-Miner and a user-defined SN curve. Results are then visualized either as contour plots for all nodes or can be studied in more detail for single nodes.