手法を比較

	最適化支援信頼性解析	ロバスト信頼性解析
分野	実験計画法	実験計画法
系統	Process / pipeline	Process / pipeline
提唱年	1990s–2000s	1980s–1990s (integration formalized in engineering literature)
提唱者	Enevoldsen, Sørensen, Der Kiureghian (foundational RBDO formulations, 1990s)	Synthesized from Taguchi robust design and classical reliability theory (Kececioglu, Taguchi)
種類	Hybrid quantitative engineering method	Quantitative reliability engineering method
原典	Haukaas, T., & Der Kiureghian, A. (2006). Strategies for finding the design point in non-linear finite element reliability analysis. Probabilistic Engineering Mechanics, 21(2), 133–147.	Kececioglu, D. (1991). Reliability Engineering Handbook (Vol. 1). Prentice Hall. ISBN: 978-0137720774
別名	RBDO-coupled reliability analysis, optimization-integrated reliability assessment, reliability-based optimization, OA-RA	RRA, reliability robustness analysis, uncertainty-aware reliability analysis, robust probabilistic reliability
関連	6	4
概要	Optimization-assisted reliability analysis couples probabilistic reliability assessment with mathematical optimization to simultaneously identify failure probabilities and find design configurations that satisfy reliability targets at minimum cost or weight. Widely applied in structural, mechanical, and aerospace engineering, it integrates methods such as FORM, SORM, or Monte Carlo simulation within an optimization loop so that design decisions are driven by quantified risk rather than deterministic safety factors alone.	Robust reliability analysis is an engineering method that combines classical reliability estimation with robustness principles to quantify and improve system dependability in the presence of parameter uncertainty and variability. Rather than assuming fixed input values, it propagates distributions of noise factors through a reliability model to produce probability-of-failure estimates that remain valid across a range of operating conditions and manufacturing tolerances.