VIGNOLES, Gérard; BRESSON, Grégory; LORRETTE, Christophe; AHMADI-SENICHAULT, Azita

doi:10.1088/1742-6596/395/1/012079

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

VIGNOLES, Gérard
Laboratoire des Composites Thermostructuraux [LCTS]

BRESSON, Grégory
Laboratoire des Composites Thermostructuraux [LCTS]

LORRETTE, Christophe
Service des Recherches Métallurgiques Appliquées [SRMA]
Laboratoire des Composites Thermostructuraux [LCTS]

Langue

Communication dans un congrès avec actes

Ce document a été publié dans

6th European Thermal Sciences Conference Eurotherm 2012, 2012-09-04, Poitiers. 2012-09-04, vol. 395, n° 1, p. 012079

Résumé en anglais

We propose a lightweight method for the determination of heat diffusivity of silica fiber bundles based on the use of a laser and an IR camera. The fiber bundle is maintained in traction in a holder; exposition is made as a step function, followed by a laser shutdown. The movie obtained by the IR camera is then processed : frame averaging, backgraound computation and substraction, image smoothing, extraction of the IR signal along the fiber bundle. A 1D model has been developed. This problem admits an analytic solution that we have obtained through the use of Laplace transforms. Several identification methods are proposed and tested, and have been compared favorably with an existing method based on periodic heating. Results are in agreement with literature values.< Réduire

Mots clés en anglais

Silica

Fiber bundle

Thermal diffusivity

IR camera

Laser

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Measurement of the thermal diffusivity of a silica fiber bundle using a laser and an IR camera

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

DOI

Origine

Unités de recherche