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Causations of failure in megaprojects: A case study of the Ajaokuta Steel Plant project

Oluwole Alfred OLATUNJI

Frontiers of Engineering Management 2018, Volume 5, Issue 3,   Pages 334-346 doi: 10.15302/J-FEM-2018011

Abstract: Failure occurred as socio-political forces aggravated the project’s complex milestones.Stakeholders were impatient with pre-project investigations.Socrates’ generic management theory was used to explain the role of leadership in the failure of theASP project.insights from failure as an instrument to trigger sublime reflections.

Keywords： industrial projects     megaprojects     Nigeria     project organizational theories     steel plant    

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Mankind and Mega-projects

Naomi J. Brookes

Frontiers of Engineering Management 2014, Volume 1, Issue 3,   Pages 241-245 doi: 10.15302/J-FEM-2014033

Abstract: The twenty-first century has seen the rapid growth of the use of this type of project in providing societyMega-project’s aim involves capturing the existing performance of large infrastructural mega-projectsMega-project’s findings downplay the importance of formal project management tools and techniques inInstead mega-project highlights the need to concentrate on the impact of financing on project governancehave on mega-project delivery.

Keywords： mega-projects     major projects     project failure    

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Integrated management of cardiac failure: the cardiac failure clinic

Daniel LOISANCE

Frontiers of Medicine 2011, Volume 5, Issue 1,   Pages 20-25 doi: 10.1007/s11684-011-0106-1

Abstract:

The prevalence of the risk factors and the risk of cardiac failure are both increasing in China.The wide range of clinical presentations of cardiac failure (acute or chronic) and of therapeutic approaches

Keywords： cardiac failure     cardiac transplantation     mechanical circulatory support    

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Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 623-642 doi: 10.1007/s11709-021-0726-8

Abstract: In this study, gradual and sudden reduction methods were combined to simulate a progressive failure inUsing the presented method, a progressive failure is simulated based on a linear softening law priorto a catastrophic failure, and thereafter, sudden reduction methods are employed for modeling a progressivefailure.The proposed method is intended to predict the first ply failure (FPF), LPF, and dominant failure modes

Keywords： progressive failure     notched composite plate     Hashin failure criterion     macro mechanics approach     finite    

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Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

Frontiers of Structural and Civil Engineering   Pages 1033-1046 doi: 10.1007/s11709-023-0973-y

Abstract: This study focuses on the bending failure performance of a shield tunnel segment.A full-scale test was conducted to investigate deformation and failure characteristics.During the loading, the bending failure process can be divided into four stages: the elastic stage, workingstage with cracks, failure stage, and ultimate stage.The characteristic loads between contiguous stages are the cracking, failure, and ultimate loads.

Keywords： shield tunnel     bearing capacity     failure mechanism     segment reinforcement    

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Overview on acute-on-chronic liver failure

Jing Zhang,Shan Gao,Zhongping Duan,Ke-Qin Hu

Frontiers of Medicine 2016, Volume 10, Issue 1,   Pages 1-17 doi: 10.1007/s11684-016-0439-x

Abstract:

Liver failure (LF) is defined as severe dysfunction in hepatic synthesis, detoxification, and metabolism

Keywords： liver failure     chronic liver failure     acute-on-chronic liver failure     diagnosis     prognosis     treatment    

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Surficial stability analysis of soil slope under seepage based on a novel failure mode

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 712-726 doi: 10.1007/s11709-021-0729-5

Abstract: Therefore, a novel failure mode involving three sliding zones (upper tension zone, middle shear slidingSubsequently, the new failure mode was verified via a numerical finite element analysis based on theThe results obtained by the new failure mode agree well with those obtained by the numerical analysis

Keywords： soil slope     seepage     surficial failure mode     stress state     edge effects    

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LSSVM-based approach for refining soil failure criteria and calculating safety factor of slopes

Shiguo XIAO; Shaohong LI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7,   Pages 871-881 doi: 10.1007/s11709-022-0863-8

Abstract: The failure criteria of practical soil mass are very complex, and have significant influence on the safetyThe Coulomb strength criterion and the power-law failure criterion are classically simplified.machine (LSSVM), a machine learning model, is purposefully provided to establish a complex nonlinear failurepercentage error, and mean square error indicate that fitting precision of the machine learning-based failureBased on the proposed LSSVM approach to determine the failure criterion, the limit equilibrium method

Keywords： slope stability     safety factor     failure criterion     least square support vector machine    

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Study of high-strength CFRP bolted joints with failure- monitoring cone washers

Tsukasa KATSUMATA, Yoshihiro MIZUTANI, Akira TODOROKI, Ryosuke MATSUZAKI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 272-276 doi: 10.1007/s11465-011-0231-1

Abstract: The increase in failure load for the proposed joint was confirmed in finite-element method analyses and

Keywords： composite     bolted joint     failure monitoring     finite-element method    

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Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1222-1237 doi: 10.1007/s11709-021-0773-1

Abstract: The influence of closed and open surface flaws on the stress distribution and failure in rock specimensinvestigate the influences of the flaw inclination, friction coefficient and the confining stress on failureNumerical results show significant differences in the stress, displacement, and failure behavior of thesurface, an open flaw may play a destressing role in the rock and relocate the stress concentration and failureThe presented results in this article suggest that failure at the rock surface may be managed in a favorable

Keywords： surface flaw     heterogeneity     circular hole     numerical modeling     relative displacement    

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Experimental study on the progressive failure and its anchoring effect of weak-broken rock vertical slope

Hehua ZHU, Qianwei XU, Wenqi DING, Feng HUANG

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 208-224 doi: 10.1007/s11709-011-0111-0

Abstract: To improve the understanding on the failure behavior and its anchoring effect of weak-broken rock slopeThe test results show that the collapse of slope is the combination of tension failure at the top andthe compression-shearing failure at the bottom of the slope, and its failure process presents progressiveThe reinforcement of blot not only can improve the vertical bearing capacity before failure, but also

Keywords： progressive failure     weak-broken rock     slope     model test     bolt    

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Onmodeling of electrical cyber-physical systems considering cyber security Project supported2015AA05002), the National Natural Science Foundation of China (No. 61471328), and the Science and Technology Project

Yi-nan WANG,Zhi-yun LIN,Xiao LIANG,Wen-yuan XU,Qiang YANG,Gang-feng YAN

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 5,   Pages 465-478 doi: 10.1631/FITEE.1500446

Abstract: This paper establishes a new framework for modeling electrical cyber-physical systems (ECPSs), integrating both power grids and communication networks. To model the communication network associated with a power transmission grid, we use a mesh network that considers the features of power transmission grids such as high-voltage levels, long-transmission distances, and equal importance of each node. Moreover, bidirectional links including data uploading channels and command downloading channels are assumed to connect every node in the communication network and a corresponding physical node in the transmission grid. Based on this model, the fragility of an ECPS is analyzed under various cyber attacks including denial-of-service (DoS) attacks, replay attacks, and false data injection attacks. Control strategies such as load shedding and relay protection are also verified using this model against these attacks.

Keywords： Cyber-physical systems     Cyber attacks     Cascading failure analysis     Smart grid    

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Stability analysis of slopes with planar failure using variational calculus and numerical methods

Norly BELANDRIA, Roberto ÚCAR, Francisco M. LEÓN, Ferri HASSANI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1262-1273 doi: 10.1007/s11709-020-0657-9

Abstract: of variational calculus applied to estimate the slope stability considering the mechanism of planar failureThe critical plane failure surface should be determined because it theoretically indicates the most unfavorableThe surface of the critical planar failure is determined by applying the condition of transversalityThe number of slices is varied in one of the examples, while the surface of the critical planar failureAll the results obtained by considering normal stress, safety factors, and critical planar failure are

Keywords： slopes stability     planar failure     variational calculus     numerical methods    

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Theoretical study of failure in composite pressure vessels subjected to low-velocity impact and internal

Roham RAFIEE, Hossein RASHEDI, Shiva REZAEE

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1349-1358 doi: 10.1007/s11709-020-0650-3

Abstract: A theoretical solution is aimed to be developed in this research for predicting the failure in internallyBoth in-plane and out-of-plane failure modes are taken into account simultaneously and thus all componentsof failure.In case of experiencing any in-plane failure mode, the evolution of damage is modeled using progressiveIt is observed that the sequence of in-plane failure and delamination varies by increasing the impact

Keywords： composite pressure vessel     low-velocity impact     failure     theoretical solution     progressive damage modeling    

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Optimization of the mechanical performance and damage failure characteristics of laminated composites

Frontiers of Structural and Civil Engineering   Pages 1357-1369 doi: 10.1007/s11709-023-0996-4

Abstract: In this study, the effect of fiber angle on the tensile load-bearing performance and damage failure characteristicsthat increasing the fiber offset angle (i.e., 30°) could optimize the mechanical properties and damage failureand analytical approaches demonstrated their ability to capture the mechanical behavior and damage failure

Keywords： fiber orientation     composite laminates     stiffness degradation     analytical approaches     finite element analysis    

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Title Author Date Type Operation

Causations of failure in megaprojects: A case study of the Ajaokuta Steel Plant project

Oluwole Alfred OLATUNJI

Journal Article

Mankind and Mega-projects

Naomi J. Brookes

Journal Article

Integrated management of cardiac failure: the cardiac failure clinic

Daniel LOISANCE

Journal Article

Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Journal Article

Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

Journal Article

Overview on acute-on-chronic liver failure

Jing Zhang,Shan Gao,Zhongping Duan,Ke-Qin Hu

Journal Article

Surficial stability analysis of soil slope under seepage based on a novel failure mode

Journal Article

LSSVM-based approach for refining soil failure criteria and calculating safety factor of slopes

Shiguo XIAO; Shaohong LI

Journal Article

Study of high-strength CFRP bolted joints with failure- monitoring cone washers

Tsukasa KATSUMATA, Yoshihiro MIZUTANI, Akira TODOROKI, Ryosuke MATSUZAKI

Journal Article

Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Journal Article

Experimental study on the progressive failure and its anchoring effect of weak-broken rock vertical slope

Hehua ZHU, Qianwei XU, Wenqi DING, Feng HUANG

Journal Article

Onmodeling of electrical cyber-physical systems considering cyber security Project supported2015AA05002), the National Natural Science Foundation of China (No. 61471328), and the Science and Technology Project

Yi-nan WANG,Zhi-yun LIN,Xiao LIANG,Wen-yuan XU,Qiang YANG,Gang-feng YAN

Journal Article

Stability analysis of slopes with planar failure using variational calculus and numerical methods

Norly BELANDRIA, Roberto ÚCAR, Francisco M. LEÓN, Ferri HASSANI

Journal Article

Theoretical study of failure in composite pressure vessels subjected to low-velocity impact and internal

Roham RAFIEE, Hossein RASHEDI, Shiva REZAEE

Journal Article

Optimization of the mechanical performance and damage failure characteristics of laminated composites

Journal Article