A Comprehensive Fuzzy Uncertainty Analysis of a Controlled Nonlinear System...
Fuzzy uncertainty analyses disclose a deeper insight and provide a better understanding of complex systems with highly interdependent parameters. In contrast to probability theory, fuzzy arithmetic is...
View ArticleUncertain Dynamic Responses of Fuzzy Arbitrary-Order Damped Beam
Uncertain dynamic responses of fuzzy fractionally damped beams have been studied using the newly developed double parametric form of fuzzy numbers subject to unit step and impulse loads. Uncertainties...
View ArticleFirst-Order Reliability Method for Structural Reliability Analysis in the...
This paper presents a novel procedure based on first-order reliability method (FORM) for structural reliability analysis in the presence of random parameters and interval uncertain parameters. In the...
View ArticleA Random Field Approach to Reliability Analysis With Random and Interval...
Interval variables are commonly encountered in design, especially in the early design stages when data are limited. Thus, reliability analysis (RA) should deal with both interval and random variables...
View ArticleInterval Limit Analysis Within a Scaled Boundary Element Framework
The paper proposes a novel approach for the interval limit analysis of rigid-perfectly plastic structures with (nonprobabilistic) uncertain but bounded forces and yield capacities that vary within...
View ArticleNonlinear Finite Element Analysis of Frames Under Interval Material and Load...
The present study focuses on the development of nonlinear interval finite elements (NIFEM) for beam and frame problems. Three constitutive models have been used in the present study, viz., bilinear,...
View ArticleComparison of Uncertainty Analyses for Crankshaft Applications
In this paper, four convex models (interval, parallelepiped, ellipsoidal, and super-ellipsoidal analyses) are introduced to describe the available data on uncertainty parameters for the engine’s...
View ArticleVibro-Acoustic Response of Engineering Structures With Mixed Type of...
The response of engineering structures is often sensitive to uncertainty in the system properties. The information on the uncertain parameters is frequently incomplete, limited to experts’ opinion,...
View ArticleAn Overview of Uncertainty Concepts Related to Mechanical and Civil Engineering
Infrastructure decisions reflect multiple social, political, and economic aspects of society, leading to information/partial knowledge and uncertainty in many forms. Alternatives to classical...
View ArticleSpecial Issue on Nonprobabilistic Treatments of Uncertainty: Recent Developments
Uncertainties inherent in any engineering problem have been traditionally modeled and processed in the context of the classical probability theory. In recent decades, alternative methods based on...
View ArticleUncertain Friction-Induced Vibration Study: Coupling of Fuzzy Logic, Fuzzy...
This paper presents a complete method to carry out a fuzzy study of a friction-induced vibration system and to analyze the effects of uncertainty on the output data of a stability problem. The proposed...
View ArticleRisk Assessment of Emergency Diesel Generator Subject to Design-Basis...
A monitoring system intended to track vibrations associated with the operation of an emergency diesel generator (EDG) at a nuclear power plant was originally installed to trip generators during...
View ArticleNested Multistate Design for Maximizing Probabilistic Performance in...
The paper presents a nested multistate methodology for the design of mechanical systems (e.g., a fleet of vehicles) involved in extended campaigns of persistent surveillance. It uses multidisciplinary...
View ArticleHow Does Concrete Affect Evaporation of Cryogenic Liquids: Evaluating...
With the impending natural gas boom in the United States, many companies are pursuing Department of Energy (DOE) approval for exporting liquefied natural gas (LNG), which is a cryogenic liquid. The...
View ArticleInterval Fractile Levels for Stationary Stochastic Response of Linear...
In the framework of stochastic analysis, the extreme response value of a structural system is completely described by its CDF. However, the CDF does not represent a direct design provision. A more...
View ArticleReliability Analysis of Repairable System With Multiple Fault Modes Based on...
This paper provides a new goal-oriented (GO) method for reliability analysis of repairable systems with multiple fault modes. First, formulas of operators describing components with multiple fault...
View ArticleFatigue Life Prediction Based on Probabilistic Fracture Mechanics: Case Study...
This paper studies the stochastic behavior of fatigue crack growth analytically and empirically by employing basic models in fracture mechanics. The research estimates the crack growth rate...
View ArticlePrediction of Remaining Fatigue Cycles in Composite Materials Under Uncertainty
In this paper, a stiffness-based model is initially assessed for fatigue damage simulation of composite materials. The model is evaluated with three sets of experimental data. A residual strength model...
View ArticleUncertainty Quantification of Turbulence Measurements in a Fully Pulsed...
This paper reports the statistical accuracy evaluation of the implementation of ensemble-averaged equation used for the measurement of turbulence quantities in a fully pulsed, axisymmetric-subsonic air...
View ArticlePowerGen Gas Turbine Losses and Condition Monitoring: A Loss Data-Based Study
In situ condition monitoring (CM) is a crucial element in protection and predictive maintenance of large rotating PowerGen equipment, such as gas turbines or steam turbines. In this work, selected gas...
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