Stochastic analysis and validation under aleatory and epistemic uncertainties

AM McKeand, RM Gorguluarslan, SK Choi - Reliability Engineering & …, 2021 - Elsevier
An uncertainty quantification and validation framework is presented to account for both
aleatory and epistemic uncertainties in stochastic simulations of turbine engine components …

Separation of aleatory and epistemic uncertainty in probabilistic model validation

J Mullins, Y Ling, S Mahadevan, L Sun… - Reliability Engineering & …, 2016 - Elsevier
This paper investigates model validation under a variety of different data scenarios and
clarifies how different validation metrics may be appropriate for different scenarios. In the …

Uncertainty quantification of manufacturing process effects on macroscale material properties

G Cai, S Mahadevan - International Journal for Multiscale …, 2016 - dl.begellhouse.com
This paper presents a methodology to propagate the uncertainties in the manufacturing
process parameters to bulk material properties through multiscale modeling. Randomness …

A new effective screening design for structural sensitivity analysis of failure probability with the epistemic uncertainty

S Xiao, Z Lu, L Xu - Reliability Engineering & System Safety, 2016 - Elsevier
In this paper, two new sampling strategies are proposed to estimate the Morris' screening
sensitivity measure and its improved version. The two new sampling strategies, which …

An efficient method for reliability analysis under epistemic uncertainty based on evidence theory and support vector regression

M Xiao, L Gao, H Xiong, Z Luo - Journal of Engineering Design, 2015 - Taylor & Francis
With a great capability of dealing with epistemic uncertainty, evidence theory has been
utilised to conduct reliability analysis for engineering systems recently. Unfortunately, the …

Quantification of epistemic uncertainty due to data sparsity and updating based on the framework via synthesizing probability density evolution method and change of …

Z WAN, J CHEN - Engineering Mechanics, 2020 - engineeringmechanics.cn
Aleatory uncertainty and epistemic uncertainty generally exist simultaneously in engineering
design. A variety of studies, including, eg, the Monte Carlo simulation, orthogonal …

Model validation under epistemic uncertainty

S Sankararaman, S Mahadevan - Reliability Engineering & System Safety, 2011 - Elsevier
This paper develops a methodology to assess the validity of computational models when
some quantities may be affected by epistemic uncertainty. Three types of epistemic …

Comparative analysis of methodologies for uncertainty propagation and quantification

A Cuneo, A Traverso… - … Expo: Power for …, 2017 - asmedigitalcollection.asme.org
In engineering design, uncertainty is inevitable and can cause a significant deviation in the
performance of a system. Uncertainty in input parameters can be categorized into two …

Impact of epistemic uncertainty on performance parameters of compressor blades

A Prots, L Schlüter, M Voigt… - … Expo: Power for …, 2022 - asmedigitalcollection.asme.org
An well-established tool for probabilistic analysis is the Monte Carlo simulation (MCS),
which can be used to gain insight into an unknown system behavior. The variability of the …

An approximate sensitivity analysis of results from complex computer models in the presence of epistemic and aleatory uncertainties

B Krzykacz-Hausmann - Reliability Engineering & System Safety, 2006 - Elsevier
This paper focuses on sensitivity analysis of results from computer models in which both
epistemic and aleatory uncertainties are present. Sensitivity is defined in the sense of …