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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 andAdditionally, the feasibility of damage monitoring using surface strains of the cone washer was demonstrated

Keywords： composite     bolted joint     failure monitoring     finite-element method    

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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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Reliability-centered Maintenance Method and Its Application in a Tunnel

Wang Jingchun,Fang Sisi,Li Xiaomeng and Zhang Wei

Strategic Study of CAE 2017, Volume 19, Issue 6,   Pages 61-65 doi: 10.15302/J-SSCAE-2017.06.009

Abstract:

This study is presented in view of the current tunnel monitoring maintenanceAccordingly, a preliminary study on the application of the RCM method in tunnel monitoring maintenanceis performed through the tunnel equipment failure mode and a reliability analysis.

Keywords： tunnel     reliability     maintenance     monitoring     failure analysis    

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A disk failure prediction model for multiple issues Research Article

Yunchuan GUAN, Yu LIU, Ke ZHOU, Qiang LI, Tuanjie WANG, Hui LI,hustgyc@hust.edu.cn,liu_yu@hust.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 7,   Pages 964-979 doi: 10.1631/FITEE.2200488

Abstract: methods have been useful in handing a single issue, e.g., heterogeneous disks, model aging, and minority samples. However, because these issues often exist simultaneously, prediction models that can handle only one will result in prediction bias in reality. Existing methods simply fuse various models, lacking discussion of training data preparation and learning patterns when facing multiple issues, although the solutions to different issues often conflict with each other. As a result, we first explore the training data preparation for multiple issues via a data partitioning pattern, i.e., our proposed multi-property data partitioning (MDP). Then, we consider learning with the partitioned data for multiple issues as learning multiple tasks, and introduce the model-agnostic meta-learning (MAML) framework to achieve the learning. Based on these improvements, we propose a novel model named MDP-MAML. MDP addresses the challenges of uneven partitioning and difficulty in partitioning by time, and MAML addresses the challenge of learning with multiple domains and minor samples for multiple issues. In addition, MDP-MAML can assimilate emerging issues for learning and prediction. On the datasets reported by two real-world data centers, compared to state-of-the-art methods, MDP-MAML can improve the area under the curve (AUC) and false detection rate (FDR) from 0.85 to 0.89 and from 0.85 to 0.91, respectively, while reducing the false alarm rate (FAR) from 4.88% to 2.85%.

Keywords： Storage system reliability     Disk failure prediction     Self-monitoring analysis and reporting technology    

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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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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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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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Non-invasive continuous blood pressure monitoring: a review of current applications

Elena Chung, Guo Chen, Brenton Alexander, Maxime Cannesson

Frontiers of Medicine 2013, Volume 7, Issue 1,   Pages 91-101 doi: 10.1007/s11684-013-0239-5

Abstract:

Blood pressure monitoring has come a long way from the initial observations made by Reverend HalesThere are none that deny the importance of monitoring perioperative blood pressure; however, the limitedability of the current prevalent technology (oscillometric blood pressure monitoring) to offer continuousInvasive monitoring is able to detect beat-to-beat blood pressure measurement, but the risks inherent, and especially the creation of those offering non-invasive but continuous blood pressure monitoring

Keywords： non-invasive blood pressure monitoring     continuous blood pressure monitoring     invasive blood pressure monitoring    

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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

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

Tsukasa KATSUMATA, Yoshihiro MIZUTANI, Akira TODOROKI, Ryosuke MATSUZAKI

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

Reliability-centered Maintenance Method and Its Application in a Tunnel

Wang Jingchun,Fang Sisi,Li Xiaomeng and Zhang Wei

Journal Article

A disk failure prediction model for multiple issues

Yunchuan GUAN, Yu LIU, Ke ZHOU, Qiang LI, Tuanjie WANG, Hui LI,hustgyc@hust.edu.cn,liu_yu@hust.edu.cn

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

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

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

Non-invasive continuous blood pressure monitoring: a review of current applications

Elena Chung, Guo Chen, Brenton Alexander, Maxime Cannesson

Journal Article

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

Journal Article