ARTIS - Fault Tree Analysis
ARTIS applies all of the availability modelling definitions to fault tree analysis, by replacing ‘capacity’ and 'production', on a continuous scale, by ‘mission’, on a binary scale. This gives rise to a set of definitions of well established terms like 'mission reliability' and 'mission criticality' that is consistent with common practice in fault tree analyses.
The large advantages of using the availability modelling approach to carry out fault tree analyses are the ease, transparency and efficiency of modelling and the automated generation of the results with the hierarchy of criticality rankings and minimum cut sets. These features also provide a convenient basis for carrying out, and building on, failure mode, effect and criticality analyses (FMEA, FMECA).
A production availability model can be interpreted as a success tree by:
- replacing the capacities (non-negative real numbers) by states (true or false),
- taking the serial trains as AND gates and
- taking the parallel trains as OR gates.
After opening the demonstration model, the quick route to do a run is:
- with the focus on the diagram, hit Ctrl+A to select all of the model
- hit Ctrl+R to show the run form, then choose the time horizon
- hit OK
- hit Submit
- when the download of the 'results.zip' file has completed, extract everything to your download folder
- in the file browser, select the 'results.html' file and open it with your web browser
You might save the demonstration model on your own computer (using your browser's "save as web page, complete") and continue from there to build your own model. For further guidance, please refer to the ARTIS wiki .
For commercial use, SecuoS offers both short- and long term service agreements.
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