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About 10,000 papers for “Structural Integrity and Reliability Analysis”

Literature Review on Aircraft Structural Risk and Reliability Analysis

Yu Chee Tong · Defense Technical Information Center (DTIC) · 2001

Aircraft structural risk and reliability analysis has gained considerable interest in the area of aircraft structural integrity and fleet management in recent times. In this report, a literature review of the current approaches and methodologies that have been utilised in the area of structural risk and reliability analysis for aircraft structures and components is conducted. The structural risk and reliability approach discussed here deals mainly with the probability of failure due to aircraft structural fatigue. It reviews the engineering techniques and probabilistic methodologies that have been reported in the literature. It also discuss the advantages, disadvantage and the limitations of this approach and the reason for its need in aircraft structural and component integrity. The application of structural risk and reliability analysis is not limited to structural fatigue problem, its implication in areas other than airframe and component fatigue are also presented. This review shows that risk and reliability analysis can be a very useful tool for fleet management and it has potential implications for structural design.

Cited by 31

Integrity Stable Reliability Analysis of Stochastic Structure System under Multiple Stochastic Loads

Wei Guang An, Geng Tian, Lili Zhou et al. · Advanced materials research · 2008

Generally, a safe margin equation is established by critical load coefficient and external load coefficient of the system in structural integrity stable reliability analysis, and then the reliability index of structural integrity stability is educed. Critical load coefficient is always obtained on condition that structure is acted on by one load. Actually, besides one load acting on the structure, their distribution is not always the same. In addition, because of the stochastic characteristic of structure system itself (e.g., cross-section of element, length, modulus of elasticity etc. are random variables), it is difficult for structural integrity stable reliability analysis. According to the theory of structure system stability and basal concept of reliability, the safe margins of structure system under different distribution loads are presented in this paper. The expression of safe margin sensitivity is given by stochastic finite element method because the safe margin is the expression of implicit function. Furthermore, the reliability indexes of the safe margin under different condition are educed by the advanced first order second moment method (AFOSM). By comparison and analysis, the structural integrity stable reliability index is ultimately obtained.

Cited by 1

Literature review on aircraft structural risk and reliability analysis (Report No. DSTO-TR-1110

Yu Chee Tong · 2001

Aircraft structural risk and reliability analysis has gained considerable interest in the area of aircraft structural integrity and fleet management in recent times. In this report, a literature review of the current approaches and methodologies that have been utilised in the area of structural risk and reliability analysis for aircraft structures and components is conducted. The structural risk and reliability approach discussed here deals mainly with the probability of failure due to aircraft structural fatigue. It reviews the engineering techniques and probabilistic methodologies that have been reported in the literature. It also discuss the advantages, disadvantage and the limitations of this approach and the reason for its need in aircraft structural and component integrity. The application of structural risk and reliability analysis is not limited to structural fatigue problem, its implication in areas other than airframe and component fatigue are also presented. This review shows that risk and reliability analysis can be a very useful tool for fleet management and it has potential implications for structural design. RELEASE LIMITATION Approved for public release

Cited by 0

A review of probabilistic structural integrity assessment in the nuclear sector and possible future directions

Saeed Zare Chavoshi, J.D. Booker, R. Bradford et al. · Fatigue & Fracture of Engineering Materials & Structures · 2021

Abstract There always exists uncertainty and variability in structural integrity assessments arising from lack of knowledge, modeling approximations, or differences between as‐manufactured components and as‐operated components. This may ultimately impact on reactor lives. Such uncertainties and variabilities can be understood and quantified using probabilistic techniques together with reliability‐based acceptance criteria, facilitating the quantification and management of risk. This review article provides a systematic appraisal of the latest worldwide literature and also unpublished reports from EDF UK nuclear plants, giving an overview of the existing knowledge of probabilistic/reliability structural integrity methodologies and tools from a multifaceted stance, including failure modes, problem types, material types, employed codes, correlations, and probability distributions. Structural reliability analysis at different levels is discussed, and pertinent issues on convergence testing, required number of trails, sensitivity analysis, verification of individual analyses, extremely small probabilities, reactor‐wide failure probabilities, and digital twin structural integrity monitoring are elaborated.

Cited by 18Open access

Structural Analysis of the ITER Thermal Shield for Final Design Verification

Chang Hyun Noh, Kwanwoo Nam, W. Chung et al. · IEEE Transactions on Plasma Science · 2014

The structural integrity of the ITER thermal shield (TS) has been verified by structural analysis. In this paper, the analysis process methodology and demonstration of the structural integrity for the TS are described. The analysis is performed for the TS global models and detailed models, such as supports and joints. TS joints in the shell model are modeled using orthotropic material properties. To verify the structural reliability for the TS, plastic collapse, buckling, ratcheting, and fatigue are assessed in accordance with ASME Section VIII, Div. 2.

Cited by 6

Risk and reliability assessment of the district heating network methodology with case study

Inga Šarūnienė, Juozas Augutis, Ričardas Krikštolaitis et al. · Vytautas Magnus University · 2017

The authors present the developed methodology for risk & reliability assessment of the piping of district heating (DH) network. Methodology includes several types of analyses: statistical data analysis, deterministic-probabilistic structural integrity analysis, probabilistic analysis, and thermal-hydraulic analysis. The proposed methodology has four stages: (1) identification of the piping with the highest failure rate; (2) calculation of failure probability by structural integrity analysis; (3) pipelines’ failure probability updating with regard to historic failure data of DH network; (4) evaluation of consequences in case of accidents (N-1 principle). Developed methodology was applied for risk and reliability assessment for Kaunas city (Lithuania) DH network.

Cited by 0

L52197 Structural Reliability Analysis for External Corrosion Direct Assessment - Part 1

Yunovich, Thompson · 2005

This presents the results of applying an existing method (Structural Reliability Analysis) and software to compare the integrity of five pipelines. The work involves analyzing data from both ECDA and ILI and comparing the reliability levels achieved during the two different integrity assessments. the SRA method used is documented in previously published work and relies on distributions derived from mainly confidential pipeline incident and fault reports.

Cited by 0Open access

A Probabilistic Physics of Failure Approach for Structure Corrosion Reliability Analysis

Chaoyang Xie, Hong‐Zhong Huang · International Journal of Corrosion · 2016

Corrosion is recognized as one of the most important degradation mechanisms that affect the long-term reliability and integrity of metallic structures. Studying the structural reliability with pitting corrosion damage is useful for risk control and safety operation for the corroded structure. This paper proposed a structure corrosion reliability analysis approach based on the physics-based failure model of pitting corrosion, where the states of pitting growth, pit-to-crack, and cracking propagation are included in failure model. Then different probabilistic analysis methods such as Monte-Carlo Simulation (MCS), First-Order Reliability Method (FORM), Second-Order Reliability Method (SORM), and response surface method are employed to calculate the reliability. At last, an example is presented to demonstrate the capability of the proposed structural reliability model and calculating methods for structural corrosion failure analysis.

Cited by 5Open access

Analysis and Design of Transmission Tower Using STAAD Pro V8i

Jyoti Besra, Jitu Kujur, Sachin Hadimani et al. · International Research Journal of Modernization in Engineering Technology and Science · 2023

Transmission towers are critical components of electrical power distribution systems, providing support for high-voltage power lines.The structural integrity and reliability of these towers are of paramount importance to ensure uninterrupted power transmission.This abstract provides an overview of the analysis and design of an X-bracing transmission tower using STAAD Pro V8i, a powerful structural analysis and design software.

Cited by 3Open access

Influence of multiple failure modes in reliability assessment of composite structures

Carlos Conceição António, Luísa N. Hoffbauer · Open Repository of the University of Porto (University of Porto) · 2009

The introduction of reliability assessment methods in the integrity analysis of composite laminates increased the complexity and the efficiency of the methodologies proposed in the literature. In this paper, approaches to obtain the reliability of whole composite laminate structures overcoming the expensive costs associated with exhaustive local reliability evaluation are proposed and analysed. The errors introduced by some approximations used in structural reliability calculation of composite laminate structures are studied within the context of robust design. The identification of different failure modes and its importance in reliability analysis are outlined and discussed.

Cited by 0

Time Variant Reliability Analysis of a Mobile Offshore Unit

Wenku Shi, P A Frieze · 2025

A time invariant structural reliability analysis of a mobile offshore unit was the central theme of the report of the Applied Design Committee of the 11th International Ship and Offshore Structures Congress (ISSC). This paper makes use of the available structural and hydrodynamic data on the unit to demonstrate the effects on vessel structural integrity of in-service defects, primarily localized corrosion wastage. Results from this time variant reliability analysis are compared with those reported in the 11th ISSC. The findings from the investigation highlight the importance of the life-cycle design philosophy for ships and offshore structures alike.

Cited by 3

Structural Life Expectancy of Marine Vessels: Ultimate Strength, Corrosion, Fatigue, Fracture, and Systems

Bilal M. Ayyub, Karl Stambaugh, Tim A. McAllister et al. · ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems Part B Mechanical Engineering · 2014

This paper provides a methodology for the structural reliability analysis of marine vessels based on failure modes of their hull girders, stiffened panels including buckling, fatigue, and fracture and corresponding life predictions at the component and system levels. Factors affecting structural integrity such as operational environment and structural response entail uncertainties requiring the use of probabilistic methods to estimate reliabilities associated with various alternatives being considered for design, maintenance, and repair. Variability of corrosion experienced on marine vessels is a specific example of factors affecting structural integrity requiring probabilistic methods. The Structural Life Assessment of Ship Hulls (SLASH) methodology developed in this paper produces time-dependent reliability functions for hull girders, stiffened panels, fatigue details, and fracture at the component and system levels. The methodology was implemented as a web-enabled, cloud-computing-based tool with a database for managing vessels analyzed with associated stations, components, details, and results, and users. Innovative numerical and simulation methods were developed for reliability predictions with the use of conditional expectation. Examples are provided to illustrate the computations.

Cited by 16

Processo de avaliação probabilística de integridade estrutural aplicado à otimização dimensional de elementos estruturais.

Guilherme Namindome · 2018

This work intends to present a process for probabilistic assessment of mechanical integrity of structural elements, and illustrates its application in situations of dimensional optimization of such elements. The presented process is based on the reliability analysis by analytical methods, using the failure assessment diagram (FAD) as failure criteria. The choice of FAD curve as a failure criteria aims to standardize the structural reliability analysis, allowing its application both in numerical simulations and in chart maps used for fast decision making. The methods of analysis and the presented process are applied in case studies to show the influence of probabilistic perception on project decision making and the importance of risk analysis in the design of structural systems.

Cited by 0Open access

Prospection semi-probabiliste de l'arbre de ruine d'une structure existante

Franck Schoefs, Jean‐François Dubé, Jean de Ville de Goyet · Revue française de génie civil · 2002

ABSTRACT Large civil engineering structures, designed few decades ago, are actually submitted to complex studies from operators and certification authorities. The concept of structural integrity is the aim of the process for structural assessment. Effects of structural scale, uncertainty on material properties lead to state the importance of a probabilistic approach for the modelling and the parameters estimation. Offshore sector is asked for the reassessment of structures since the beginning of the 90's and has developed to this aim several aid-tools. The most useful is the fault-tree built following a deterministic scheme or a reliability analysis of fault scenario. Since this computation are numerical codes dependent, complementary scheme are to be developed to give the most complete information on the structural integrity. This paper proposes an iterative building of fault-tree based on a semi-probabilistic analysis of the structural integrity.

Cited by 0Open access

Review of inservice inspections of greased tendons in prestressed-concrete containments. [PWR; BWR]

J. Dougan, H. Ashar · University of North Texas Digital Library (University of North Texas) · 1983

Prestressed-concrete containments in the United States using greased prestressing tendons are inspected periodically to ensure structural integrity and to identify and correct problem areas before they become critical. An analysis of the available utility inspection data and an evaluation of the current and proposed guidelines were conducted to provide a measure of the reliability of the inspection process. Comments from utility and industry personnel were factored into the analysis. The results indicated that the majority of the few incidences of problems or abnormalities which occurred were minor in nature and did not threaten the structural integrity of the containment.

Cited by 0Open access

Reliability and Maintainability of In-Service Pipelines

Mahmoodian, Mojtaba · Figshare · 2018

Reliability and Maintainability of In-Service Pipelines helps engineers understand the best structural analysis methods and more accurately predict the life of their pipeline assets. Expanded to cover real case studies from oil and gas, sewer and water pipes, this reference also explains inline inspection and how the practice influences reliability analysis, along with various reliability models beyond the well-known Monte Carlo method. Encompassing both numerical and analytical methods in structural reliability analysis, this book gives engineers a stronger point of reference covering both pipeline maintenance and monitoring techniques in a single resource. Provides tactics on cost-effective pipeline integrity management decisions and strategy for a variety of different pipes Presents readers with rational tools for strengthening and rehabing existing pipelines Teaches how to optimize materials selection and design parameters for designing future pipelines with a longer service life

Cited by 2Open access