השוואת שיטות

	ניתוח רגישות עם FMEA	ניתוח עץ תקלות (FTA)
תחום	תכנון ניסויים	אמינות
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1990s–2000s (systematic integration)	1981
הוגה השיטה	Grumman Aircraft (FMEA origin, 1950s); sensitivity analysis integration developed by reliability engineering community	Vesely et al. (US NRC Fault Tree Handbook)
סוג	Hybrid risk analysis and sensitivity technique	Deductive top-down failure analysis
מקור מכונן	Stamatis, D. H. (2003). Failure Mode and Effect Analysis: FMEA from Theory to Execution (2nd ed.). ASQ Quality Press. ISBN: 978-0873895989	Vesely, W. E., Goldberg, F. F., Roberts, N. H., & Haasl, D. F. (1981). Fault Tree Handbook (NUREG-0492). U.S. Nuclear Regulatory Commission.
כינויים	SA-FMEA, FMEA with sensitivity analysis, sensitivity-enhanced FMEA, SA-integrated FMEA	FTA, Fault Tree Method, Top-Down Reliability Analysis, Hata Ağacı Analizi
קשורות	6	3
תקציר	Sensitivity analysis with failure mode and effects analysis (SA-FMEA) combines classical FMEA risk scoring with systematic sensitivity analysis to determine which input parameters — severity, occurrence, and detectability ratings — drive the Risk Priority Number (RPN) most strongly. This integration helps teams focus improvement resources where they matter most, revealing how uncertain or variable scoring assumptions propagate into final risk rankings.	Fault Tree Analysis (FTA) is a top-down, deductive reliability method that begins with an undesired top-level failure event and systematically traces backward through chains of contributing causes using Boolean logic gates (AND, OR). First formalized by Watson at Bell Telephone Laboratories in 1961 and later standardized by Vesely, Goldberg, Roberts, and Haasl in the landmark 1981 NRC Fault Tree Handbook, FTA has become a cornerstone of quantitative risk assessment in nuclear, aerospace, and industrial safety engineering.