Vallée, T, Keller, T, Fourestey, G, Fournier, B, Correia, JR
The Weibull distribution, used to describe the scaling of strength of materials, has been verified on a wide range of materials and geometries; however, the quality of the fitting tended to be less...
Axial compression experiments were conducted on pultruded E-glass fiber-reinforced polymer laminates of different slenderness. Second-order deformations greatly increased the bending moments and...
A PROBABILISTIC METHOD TO PREDICT THE STRENGTH OF ADHESIVELY BONDED JOINTS OF GFRP (2008)
T. Vallée, J. Ribeiro, T. Keller
Experimental and numerical investigations were carried out on adhesively bonded full-scale double lap joints from pultruded GFRP profiles with relatively thick adhesive layers, needed in...
Modeling of thermal responses for FRP composites under elevated and high temperatures (2008)
Based on temperature-dependent thermo-physical property models developed previously, a one-dimensional model was proposed to predict the thermal responses of FRP composites in time and space domain,...
Direct load transmission in hybrid FRP and lightweight concrete sandwich bridge deck (2008)
Schaumann, E, Vallée, T, Keller, T
Direct load transmission experiments on hybrid short-span beam specimens for a novel bridge deck were performed. The sandwich construction consists of three layers: a fiber- reinforced polymer...
Keller, T, Riebel, F, Vallée, T
As part of a 15-year railway noise remediation plan, 300km of noise barriers will be installed in Switzerland over the next few years. To enable pultruded glass fiber- reinforced polymer (GFRP)...
Structural concept, design and experimental verification of a GFRP sandwich roof structure (2008)
Keller, T, Haas, Ch, Vallée, T
This paper reports on the design and construction of a lightweight glass fiber-reinforced polymer roof structure in Basel, Switzerland. The sandwich construction allowed for an integration of static,...
Modeling of stiffness properties of FRP composites under elevated and high temperatures (2008)
When subjected to elevated and high temperatures, the mechanical properties of FRP composites, such as the E- modulus and viscosity, experience significant changes. At a certain temperature, a...
Pultruded GFRP posts for railway noise barriers (2008)
Riebel, F, Vallée, T, Keller, T
142 (abstract), paper on CD-ROM
A decomposition model for resin in glass fiber-reinforced polymer composites (GFRP) under elevated and high temperature was derived from chemical kinetics. Kinetic parameters were determined by four...
Modelling of thermo-physical properties for FRPcomposites under elevated and high temperature (2007)
Long-term performance of a glass fiber-reinforced polymer truss bridge (2007)
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...
Flexural behavior of a hybrid FRP and lightweight concrete sandwich bridge deck (2007)
Keller, T, Schaumann, E, Vallée, T
This paper presents a new concept for a lightweight hybrid- FRP bridge deck. The sandwich construction consists of three layers: a fiber-reinforced polymer composite (FRP) sheet with T-upstands for...
Vallée, T, Correia, J R, Keller, T
Experimental and numerical investigations were carried out on adhesively bonded full-scale double lap joints composed of pultruded GFRP profiles with relatively thick adhesive layers. Thick adhesive...
Vallée, T, Correia, J R, Keller, T
A probabilistic method for the strength prediction of adhesively bonded double lap joints composed of pultruded GFRP adherends subjected to quasi-static axial tensile loading is presented. The...
Adhesively bonded lap joints from pultruded GFRP profiles. Part III: Effects of chamfers (2006)
Quasi-static axial tension experiments were performed in a laboratory environment on epoxy bonded, balanced double-lap joints composed of pultruded GFRP flat profiles. The parameters investigated...
Quasi-static axial tension experiments were performed in a laboratory environment on epoxy bonded, balanced double-lap and single-lap joints from pultruded GFRP flat sections. Full-scale specimens...
Adhesively bonded lap joints from pultruded GFRP profiles. Part II: joint strength prediction (2005)
A method to predict the strength of adhesively bonded single and double lap joints from pultruded GFRP composite adherends subjected to quasi-static axial tensile loading is presented. The method is...
Environmental negotiations as dynamic games: Why so selfish?
Raouf Boucekkine, Jacek B. Krawczyk, T. Vallée
We study a trade-off between economic and environmental indicators using a two-stage optimal control setting where the player can switch to a cleaner technology, that is environmentally...