TY - GEN
T1 - TREEZZY2, a Fuzzy Logic Computer Code for Fault Tree and Event Tree Analyses
AU - Castiglia, Francesco
AU - Giardina, Mariarosa
AU - Casamirra, Maddalena
AU - Bellini, Salvatore
PY - 2004
Y1 - 2004
N2 - In conventional approach to reliability analysis using logical trees methodologies, uncertainties in system components or basic events failure probabilities are approached by assuming probability distribution functions. However, data are often insufficient for statistical estimation, and therefore it is required to resort to approximate estimations. Moreover, complicate calculations are needed to propagate uncertainties up to the final results. In our work, in order to take account of the uncertainties in system failure probabilities, the methodology based on fuzzy sets theory is used both in fault tree and event tree analyses. This paper just presents our work in this issue, which resulted in a computer program named TREEZZY (TREE fuZZY).
AB - In conventional approach to reliability analysis using logical trees methodologies, uncertainties in system components or basic events failure probabilities are approached by assuming probability distribution functions. However, data are often insufficient for statistical estimation, and therefore it is required to resort to approximate estimations. Moreover, complicate calculations are needed to propagate uncertainties up to the final results. In our work, in order to take account of the uncertainties in system failure probabilities, the methodology based on fuzzy sets theory is used both in fault tree and event tree analyses. This paper just presents our work in this issue, which resulted in a computer program named TREEZZY (TREE fuZZY).
UR - http://hdl.handle.net/10447/16124
M3 - Conference contribution
SN - 1-85233-827-X
SP - 549
EP - 554
BT - PROBABILISTIC SAFETY ASSESSMENT AND MANAGEMENT
ER -