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Yu Bai

Cette personne a quitté l’EPFL

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Publications associées (46)

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Effects of thermal loading history on structural adhesive modulus across glass transition

Thomas Keller, Yu Bai

Dynamic Mechanical Analysis was conducted on a polyurethane adhesive at different constant heating rates up to 100°C, covering the glass transition range. Different storage modulus degradation curves were obtained from different heating rates. The differen ...

Elsevier2011

Pre-buckling and post-buckling failure at web-flange junction of pultruded GFRP beams

Thomas Keller, Yu Bai

Separation at the web-flange junction is a common failure mode of pultruded glass fiber-reinforced (GFRP) beams subjected to bending. The causes of this separation appear to depend on the presence of lateral supports to prevent lateral buckling. To clarify ...

Springer Verlag2013

Modeling of strength degradation for fiber-reinforced polymer composites in fire

Thomas Keller, Yu Bai

A model for predicting composite material strength degradation under elevated and high temperatures is proposed. This model is based on the morphology of the mixture of materials in different states. The degradation of resin-dominated shear strength can be ...

2009

Time dependence of material properties of FRP composites in fire

Thomas Keller, Yu Bai

Temperature dependence of physical and mechanical properties is considered in most thermal and mechanical response models for composite materials. Based on thermogravimetry analysis, differential scanning calorimetry, and dynamic mechanical analysis conduc ...

2009

New Connection System for Confined Concrete Columns and Beams. I: Experimental Study

Yu Bai

A new connection system for a concrete filled steel tube composite column and reinforced concrete beams is proposed. In this connection, the steel tube is interrupted while the reinforced concrete beams are continuous in the joint zone. Multiple lateral ho ...

2008

Characterization of frequency-dependent glass transition temperature by Vogel-Fulcher relationship

Yu Bai, Li Jin

The complex mechanical modulus of polymer and polymer based composite materials showed a frequency-dependent behaviour during glass transition relaxation, which was historically modelled by the Arrhenius equation. However, this might not be true in a broad ...

2008

The integrated stress response contributes to tRNA synthetase-associated peripheral neuropathy

Yu Bai, René Uwe Schneider, Cédric Gobet

Dominant mutations in ubiquitously expressed transfer RNA (tRNA) synthetase genes cause axonal peripheral neuropathy, accounting for at least six forms of Charcot-Marie-Tooth (CMT) disease. Genetic evidence in mouse and Drosophila models suggests a gain-of ...

American Association for the Advancement of Science2021

HE-LHC: The High-Energy Large Hadron Collider Future Circular Collider Conceptual Design Report Volume 4

Yi Zhang, Jan Steggemann, Hua Zhang, Elena Graverini, Jeffrey Alan Hubbell, Pierluigi Bruzzone, Jean-Michel Sallese, Mingkui Wang, Luca Rossi, Mikhail Chapochnikov, Thomas Rizzo, Mathias Oleg Knecht, Doohyun Kim, Yu Bai, Fabio Avino, Xavier Buffat, Andrea Wulzer, Tatiana Pieloni, Michael Schenk, Florian Patrick Marie Daniel De la Barre De Nanteuil, Marco Drewes, Mithlesh Kumar, Alexandra Sarabando de Carvalho, Alban Sublet, Lorena Gonçalves de Alcântara e Freitas Krikler, Alexej Grudiev, Roberto Contino, José Luis Abelleira Fernández, Francesco Cerutti, Sondre Vik Furuseth, Giovanni Migliorati, Vincenzo D'Auria, Luca Vecchi, Javier Barranco Garcia, Claudia Tambasco, Sandra Aumon, Georgi Gorine, Bernhard Auchmann, Lotta Maria Mether, Léon Van Riesen-Haupt, Marc-Olivier Sauvain, Leonid Rivkin, Agnieszka Chmielinska, Eva Maria Rodriguez Franco

In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered an energy-frontier hadron collider ...

2019

FCC-hh: The Hadron Collider: Future Circular Collider Conceptual Design Report Volume 3

Yi Zhang, Jan Steggemann, Hua Zhang, Elena Graverini, Pierluigi Bruzzone, Jean-Michel Sallese, Luca Rossi, Mikhail Chapochnikov, Mathias Oleg Knecht, Doohyun Kim, Yu Bai, Fabio Avino, Xavier Buffat, Tatiana Pieloni, Andrea Wulzer, Michael Schenk, Marco Drewes, José Luis Abelleira Fernández, Mithlesh Kumar, Alexandra Sarabando de Carvalho, Leonid Rivkin, Vincenzo D'Auria, Alban Sublet, Alexej Grudiev, Roberto Contino, Francesco Cerutti, Sondre Vik Furuseth, Javier Barranco Garcia, Claudia Tambasco, Sandra Aumon, Agnieszka Chmielinska, Bernhard Auchmann, Lotta Maria Mether, Léon Van Riesen-Haupt

2019

FCC-ee: The Lepton Collider: Future Circular Collider Conceptual Design Report Volume 2

Yi Zhang, Jan Steggemann, Hua Zhang, Elena Graverini, Pierluigi Bruzzone, Jean-Michel Sallese, Luca Rossi, Mikhail Chapochnikov, Mathias Oleg Knecht, Doohyun Kim, Yu Bai, Fabio Avino, Xavier Buffat, Tatiana Pieloni, Andrea Wulzer, Michael Schenk, Marco Drewes, José Luis Abelleira Fernández, Mithlesh Kumar, Alexandra Sarabando de Carvalho, Leonid Rivkin, Alban Sublet, Alexej Grudiev, Roberto Contino, Francesco Cerutti, Sondre Vik Furuseth, Vincenzo D'Auria, Luca Vecchi, Javier Barranco Garcia, Claudia Tambasco, Sandra Aumon, Agnieszka Chmielinska, Georgi Gorine, Bernhard Auchmann, Léon Van Riesen-Haupt, Lotta Maria Mether

In response to the 2013 Update of the European Strategy for Particle Physics, the Future Circular Collider (FCC) study was launched, as an international collaboration hosted by CERN. This study covers a highest-luminosity high-energy lepton collider (FCC-e ...

2019

Shear failure of pultruded FRP composites under axial compression

Thomas Keller, Yu Bai

When structural elements are subjected to compressive loads, the shear forces and stresses induced by second- order effects may lead to shear failure prior to compressive failure. This is particularly likely to occur in the case of pultruded glass fiber-re ...

2009

Fire Performance of Water-Cooled GFRP Columns. Part II: Postfire Investigation

Thomas Keller, Yu Bai

The postfire mechanical performances of water-cooled full-scale GFRP cellular columns subjected to axial compression were evaluated after exposure to an ISO-834 fire from one side for periods of 60 and 120 mins. The elastic modulus and postfire buckling lo ...

American Society of Civil Engineers2011

New Connection System for Confined Concrete Columns and Beams. II: Theoretical Modeling

Yu Bai

The concept of confined concrete has been widely accepted throughout the structural engineering field, such as the spiral, steel tube, or carbon fiber composite shell confined concrete, etc. In the present study, this concept has not only been used in the ...

2008

Fire performance of water-cooled GFRP columns. Part I: Fire endurance investigation

Thomas Keller, Christian Ludwig, Yu Bai

Structural fire endurance experiments were conducted on full-scale cellular glass fiber-reinforced (GFRP) columns under axial compression and subjected to ISO834 fire exposure from one side. Unprotected columns can resist fire for more than 30 min, which i ...

American Society of Civil Engineers2011

Employ a bisthienothiophene linker to construct an organic chromophore for efficient and stable dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Peng Wang, Yu Bai, Sophie Wenger

We employed the bisthienothiophene conjugated linker along with a hydrophobic triphenylamine electron-donor and a hydrophilic cyanoacrylic acid electron-acceptor to construct a high molar extinction coefficient organic photosensitizer, exhibiting a power c ...

2009

Modeling of post-fire stiffness of E-glass fiber- reinforced polyester composites

Thomas Keller, Yu Bai

A new model is proposed to estimate the post-fire stiffness of FRP composites after different fire-exposure times. The model considers the E-modulus recovery of the material if cooled down from temperatures between glass transition and decomposition during ...

2007

Fire performance of water-cooled cellular GFRP columns

Thomas Keller, Yu Bai

Structural fire endurance experiments were conducted on full-scale cellular glass fiber reinforced (GFRP) columns under axial compression and subjected to ISO 834 fire exposure from one side. Unprotected columns could resist fire for more than 30 min, whic ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2011

Modeling of thermo-physical properties and thermal responses for FRP composites in fire

Thomas Keller, Till Vallée, Yu Bai

2007

Long-term performance of a glass fiber-reinforced polymer truss bridge

Thomas Keller, Till Vallée, Yu Bai

In the summer of 2005, after eight years of use as a temporary bridge during the winter, the Pontresina Bridge for pedestrians was transported to the Swiss Federal Institute of Technology Lausanne for a detailed assessment of the structural safety, service ...

2007

Dynamic behavior of an all-FRP pedestrian bridge

Thomas Keller, Till Vallée, Yu Bai

2007