Product Code: ICA11_1106

New Advances for Laser Adhesion Test (LASAT) : From Thick to Thin Coatings
Authors:
Laurent Berthe, Laboratoire Procédés et Inginièrie en Matériaux et Procedes; Paris France
Michel Arrigoni, Laboratoire Brestois de MéCanique et des Systèmes LBMS (; Brest France
Michel Boustie, PPRIME-ENSMA Université de Poitiers; Futuroscope France
Jean-paul Cuq-Lelandais, PPRIME-ENSMA Université de Poitiers; Futuroscope France
Cédric Broussillou, MINES Paristech, Centre des Matériaux; Evry France
Grégory Fabre, MINES Paristech, Centre des Matériaux; Evry France
Michel Jeandin, MINES Paristech, Centre des Matériaux; Evry France
Vincent Guipont, MINES Paristech, Centre des Matériaux; Evry France
Mariette Nivard, Laboratoire Procédés et Inginièrie en Matériaux et Procedes; Paris France
Presented at ICALEO 2011

This paper concerns the Laser Adhesion Test of coatings. It consists in using shock wave produced by laser to generate stresses at interfaces. Basics are related to spallation of bulk material. Ranges of laser pulse duration from fs to ns and intensity from GW/cm2 to TW/cm2 allow new shock wave configurations to test a wide range of coatings (material, Muli-layers l, thickness). This paper presents recent experiments and developments on the technique. Specific experimental protocol coupled with numerical simulations show the ability of LASAT to do a quantitative adhesion test. Fundamental phenomenas are evidendced with bulk materials before demonstration for applied coatings : Hydroxyhapatite, Thermal Barrier, Composite (Epoxy reinforced by carbon fiber) and thin coating for solar cells.