Publications by Thomas Gmür | EPFL Graph Search

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In this paper, a mixed numerical-experimental identification procedure for characterising the storage and loss properties in sandwich structures with a relatively stiff core is developed. At the computational level, the proposed method is based upon an ori ...

A novel method is presented for estimating the elastic and dissipative parameters of composite plates and shells through a mixed numerical-experimental identification procedure based on the natural frequencies, modal damping factors and mode shapes of the ...

Fiber reinforced composite materials risk to suffer from subsurface, barely visible, damage induced by transverse relatively low energy impacts. This two-paper series presents a method for the localization of an impact and identification of an eventual dam ...

Experimental and numerical investigations are carried out on metal/fibregiass-reinforced-plastic joints integrated in electrical insulators subject to bending. Numerical stress and strain distributions through the bond are calculated with a solid 3D finite ...

This paper describes efficient C-0-compatible finite elements for modelling structurally damped laminated composite plates and shells under harmonic vibrations. Based upon a shear deformation theory of any order p (PSDT), the elements are well adapted for ...

Among materials being introduced in the aerospace industry, the carbon fibre reinforced plastics (CFRP) have a place of privilege because of their exceptional stiffness-to-mass ratio. However, the polymer-based matrix is vulnerable to damages by environmen ...

Aiming to reduce costs, polyvinylidene difluoride (PVDF) film patches are an emerging alternative to more classic piezoelectric technologies, like ceramic patches, as transducers to measure local deformation in many structural applications. This choice is ...

This paper presents the development of an efficient and numerically stable algorithm for accurately computing the eigensolutions of the quadratic real symmetric eigenproblem arising in the finite dynamic element (FDE) formulation. Closely related to the subspace forward iteration method, the proposed scheme is well suited to extracting the lowest natural frequencies and associated mode shapes of large practical eigenproblems, takes full advantage of the banded configuration of the stiffness, inertia and dyn

Internal strain measurements in cross-ply carbon-epoxy composite plates under dynamic loads are carried out using embedded FBG sensors. The principle of the FBG interrogation is based on intensity demodulation achieved via a Fabry-Perot filter. To account ...

Thomas Gmür

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Modal numerical-experimental identification method for characterising the elastic and damping properties in sandwich structures with a relatively stiff core

Numerical-experimental identification of the elastic and damping properties in composite plates

Low energy impact damage monitoring of composites using dynamic strain signals from FBG sensors - Part I: Impact detection and localization

Stress and failure analysis of crimped metal-composite joints used in electrical insulators subjected to bending

A PSDT shell finite element formulation including structural damping

Multi-factorial models of a carbon fibre/epoxy composite subjected to accelerated environmental ageing

Monitoring of composite structures using a network of integrated PVDF film transducers

A subspace forward iteration method for solving the quadratic eigenproblem associated with the FDE formulation

High-speed internal strain measurements in composite structures under dynamic load using embedded FBG sensors

Composites Part A: Applied Science and Manufacturing

Acoustic emission study and strength analysis of crimped steel-composite joints under traction

Improved dynamic characterization of the elastic properties in composite plates

Quantification of damage due to environmental conditions on carbon fibre/epoxy composite samples

Modal validation of sandwich shell finite elements based upon a p-order shear deformation theory including zigzag terms

Influence of the thin ply size on mode I and II energy release rate of unidirectional carbon epoxy laminates

Improved modal characterization of the constitutive parameters in multilayered plates

Delamination propagation measurement using long gauge-length FBG sensors

Numerical-experimental identification of the elastic and dissipative properties in composite sandwich plates

Internal strain measurements in CFRP plates subjected to impact load using FBG sensors

Characterization of impact damage in fibre reinforced composite plates using embedded FBG sensors