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Accelerated life-time test of MEA durability under vehicle operating conditions in PEM fuel cell

Tian TIAN, Jianjun TANG, Wei GUO, Mu PAN

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 326-333 doi: 10.1007/s11708-017-0489-z

Abstract: In this paper, a novel accelerated test method was proposed to analyze the durability of MEA, considering

Keywords： polymer electrolyte membrane fuel cell     accelerated life-time test     load cycling test     durability    

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Analysis of load and adaptability of disc cutters during shield tunneling in soft–hard varied strata

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 533-545 doi: 10.1007/s11709-023-0946-1

Abstract: to numerically simulate the failure process of materials on the excavation face and to calculate the loadAdditionally, the parameters of the models are modified based on laboratory disc cutter excavation testThe results of numerical calculation can reflect the load level and the behavior of the disc cutters

Keywords： shield tunneling     disc cutter load     laboratory excavation test     numerical calculation     soft–hard varied    

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Crushed rocks stabilized with organosilane and lignosulfonate in pavement unbound layers: Repeated load

Diego Maria BARBIERI, Inge HOFF, Chun-Hsing HO

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 412-424 doi: 10.1007/s11709-021-0700-5

Abstract: The beneficial effect offered by the additives was thoroughly evaluated by performing repeated load triaxialFurthermore, a finite element model was created to simulate the repeated load triaxial test by implementing

Keywords： organosilane     lignosulfonate     crushed rocks     pavement unbound layers     repeated load triaxial test     finite    

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evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete under freeze–thaw cycling

Frontiers of Structural and Civil Engineering   Pages 1341-1356 doi: 10.1007/s11709-023-0988-4

Abstract: This study empirically investigated the influence of freeze–thaw cycling on the dynamic splitting tensiledamage factor defined in this paper indicate that the degree of damage to SFRC caused by freeze–thaw cyclingstage of loading changed from shear to tensile after the SFRC specimens were subjected to freeze–thaw cycling

Keywords： steel fiber reinforced concrete     freeze–thaw cycling     Brazilian disc splitting test     acoustic emission    

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MANURE AND METROPOLES---A GLOBAL FRAMEWORK FOR NUTRIENT CYCLING IN FOOD SYSTEMS

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,

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Model test study on load bearing mechanism of DX pile

Li Zhong,Zhang Hang,Gu Yuan,Nan Yong,Chen Lihong

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 86-89

Abstract: text-align: justify;">DX pile is a new kind of variable cross-section pile invented recent years, its unique load-carryingThrough small scale model test to study the theory of the DX pile.bearing capacity and settlement; the upper bell bears more than that of the below, but with the total load

Keywords： DX pile     model test     strain gage     settlement    

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Modeling oblique load carrying capacity of batter pile groups using neural network, random forest regression

Tanvi SINGH, Mahesh PAL, V. K. ARORA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 674-685 doi: 10.1007/s11709-018-0505-3

Abstract: forest regression (RF) and neural network (NN) based modelling approaches were used to predict oblique loadPile length ( ), angle of oblique load ( ), sand density ( ), number of batter piles ( ), and numberof vertical piles ( ) as input and oblique load ( ) as output was used.M5 model tree provides simple linear relation which can be used for the prediction of oblique load forof batter pile ( ) affect the oblique load capacity for both smooth and rough pile groups.

Keywords： batter piles     oblique load test     neural network     M5 model tree     random forest regression     ANOVA    

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SOIL NITROGEN CYCLING AND ENVIRONMENTAL IMPACTS IN THE SUBTROPICAL HILLY REGION OF CHINA: EVIDENCE FROM

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 407-424 doi: 10.15302/J-FASE-2022448

Abstract:

● Soil nitrogen fluxes and influencing factors were reviewed in the subtropical hilly regions.

Keywords： nitrogen cycling     soil nitrogen     nitrogen deposition     greenhouse gases emission     non-point source pollution    

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Study of in situ test to DX pile and post grouting bored pile

Liu Chungang,Chai Xiaobing,Ouyang Yi,He Dexin

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 80-85

Abstract:

The in-situ vertical resisting compression static test of DX pile isand post-grouting bored pile can enhance capacity and control settlement effectively;effect of four test

Keywords： DX pile     static load test     bearing capacity     settlement    

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Distributed fiber optic monitoring of a CFA pile with a central reinforcement bar bundle

Yi RUI, Nicholas de BATTISTA, Cedric KECHAVARZI, Xiaomin XU, Mei YIN

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 167-176 doi: 10.1007/s11709-020-0581-z

Abstract: distributed fiber optic sensor (DFOS) technology to measure the strain of a continuous flight auger (CFA) testpile with a central reinforcement bar bundle, during a static load test carried out in London.Based on this pile load test, a finite element (FE) analysis was performed using a one-dimensional nonlinearload-transfer model.from the monitored data, the FE model was able to simulate the pile and soil performance during the load

Keywords： continuous flight auger pile     static load test     central reinforcement bar bundle     distributed fiber opticsensor     finite element     load transfer    

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Numerical analysis of bearing behaviors of single batter piles under horizontal loads in various directions

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 224-237 doi: 10.1007/s11709-022-0914-1

Abstract: to be effective, as confirmed by the close agreement between the predicting results with the model test(reported in this study) and centrifuge model test results (reported in the literature).

Keywords： single batter pile     skew horizontal load     model test     finite-element analysis     empirical design method    

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Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes

Daniel GAONA,Alfredo VALAREZO

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 294-300 doi: 10.1007/s11465-015-0351-0

Abstract:

The elastic modulus of a deposit (Ed) can be obtained by monitoring the temperature (?T) and curvature (?k) of a one-side coated long plate, namely, a one-dimensional (1D) deformation model. The aim of this research is to design an experimental setup that proves whether a 1D deformation model can be scaled for complex geometries. The setup includes a laser displacement sensor mounted on a robotic arm capable of scanning a specimen surface and measuring its deformation. The reproducibility of the results is verified by comparing the present results with Stony Brook University Laboratory’s results. The ?k-?T slope error is less than 8%, and the Ed estimation error is close to 2%. These values reveal the repeatability of the experiments. Several samples fabricated with aluminum as the substrate and 100MXC nanowire (Fe and Cr alloy) as the deposit are analyzed and compared with those in finite element (FE) simulations. The linear elastic behavior of 1D (flat long plate) and 2D (squared plate) specimens during heating/cooling cycles is demonstrated by the high linearity of all ?k-?T curves (over 97%). The Ed values are approximately equal for 1D and 2D analyses, with a median of 96 GPa and standard deviation of 2 GPa. The correspondence between the experimental and simulated results for the 1D and 2D specimens reveals that deformation and thermal stress in coated specimens can be predicted regardless of specimen geometry through FE modeling and by using the experimental value of Ed. An example of a turbine-blade-shaped substrate is presented to validate the approach.

Keywords： in-plane     Young’s modulus     curvature temperature     thermal stress     coating    

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MANURE AND METROPOLES—A GLOBAL FRAMEWORK FOR NUTRIENT CYCLING IN FOOD SYSTEMS

Daan VERSTAND, Theun VELLINGA, Krijn POPPE, Pieter de WOLF

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,   Pages 182-187 doi: 10.15302/J-FASE-2020364

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biomass-derived carbon loaded with MnO as lithium-ion battery anode for improving its reversible capacity and cycling

Frontiers of Chemical Science and Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11705-023-2376-y

Abstract: However, improving the reversible capacity and cycling performance remains a long-standing challenge.activation and KMnO4 hydrothermal treatment, this work proposes a two-step activation method to loadhigh current density of 1.0 A·g–1, KAC@MnO2 still exhibits excellent long-term cyclinganode materials, the KAC@MnO2 prepared in this work shows superior reversible capacity and cycling

Keywords： biomass-derived carbon     MnO2     lithium-ion batteries     anode material     high reversible capacity    

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Experimental study of wind loads on gable roofs of low-rise buildings with overhangs

Peng HUANG, Ling TAO, Ming GU, Yong QUAN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 300-317 doi: 10.1007/s11709-018-0449-7

Abstract: gable roofs of low-rise buildings are investigated by a series of wind tunnel tests which consist of 99 testdesign of low-rise buildings in typhoon area and act as references for the future’s modification of wind load

Keywords： low-rise building     gable roof     wind loads     wind tunnel test     block pressure coefficient     load code    

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Title Author Date Type Operation

Accelerated life-time test of MEA durability under vehicle operating conditions in PEM fuel cell

Tian TIAN, Jianjun TANG, Wei GUO, Mu PAN

Journal Article

Analysis of load and adaptability of disc cutters during shield tunneling in soft–hard varied strata

Journal Article

Crushed rocks stabilized with organosilane and lignosulfonate in pavement unbound layers: Repeated load

Diego Maria BARBIERI, Inge HOFF, Chun-Hsing HO

Journal Article

evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete under freeze–thaw cycling

Journal Article

MANURE AND METROPOLES---A GLOBAL FRAMEWORK FOR NUTRIENT CYCLING IN FOOD SYSTEMS

Journal Article

Model test study on load bearing mechanism of DX pile

Li Zhong,Zhang Hang,Gu Yuan,Nan Yong,Chen Lihong

Journal Article

Modeling oblique load carrying capacity of batter pile groups using neural network, random forest regression

Tanvi SINGH, Mahesh PAL, V. K. ARORA

Journal Article

SOIL NITROGEN CYCLING AND ENVIRONMENTAL IMPACTS IN THE SUBTROPICAL HILLY REGION OF CHINA: EVIDENCE FROM

Journal Article

Study of in situ test to DX pile and post grouting bored pile

Liu Chungang,Chai Xiaobing,Ouyang Yi,He Dexin

Journal Article

Distributed fiber optic monitoring of a CFA pile with a central reinforcement bar bundle

Yi RUI, Nicholas de BATTISTA, Cedric KECHAVARZI, Xiaomin XU, Mei YIN

Journal Article

Numerical analysis of bearing behaviors of single batter piles under horizontal loads in various directions

Journal Article

Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes

Daniel GAONA,Alfredo VALAREZO

Journal Article

MANURE AND METROPOLES—A GLOBAL FRAMEWORK FOR NUTRIENT CYCLING IN FOOD SYSTEMS

Daan VERSTAND, Theun VELLINGA, Krijn POPPE, Pieter de WOLF

Journal Article

biomass-derived carbon loaded with MnO as lithium-ion battery anode for improving its reversible capacity and cycling

Journal Article

Experimental study of wind loads on gable roofs of low-rise buildings with overhangs

Peng HUANG, Ling TAO, Ming GU, Yong QUAN

Journal Article