Numerical modeling of laser-induced shock experiments for the development of the adhesion test for bonded composite materials

Romain Ecault (1, 2) , Fabienne Touchard (2) , Michel Boustié (2) , Laurent Berthe (3) , Nicolas Dominguez (4, 5)

1 Airbus Group Innovations [Suresnes]
2 PPrime [Poitiers] - Institut Pprime [UPR 3346]
3 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux
4 DISC (CEA, LIST) - Département Imagerie et Simulation pour le Contrôle (CEA, LIST)
5 Airbus Group Innovations [Toulouse]

In this work, laser shock experiments on composite material are modeled. Focus is made on the development of a reliable numerical model to be used for the laser shock wave adhesion test of bonded composites. Technique principle is explained as well as the laser shock experiment procedure. Then, the numerical investigations are presented. A calibration method is given to set the model input parameters, and the modeling choices are detailed. Dynamic material parameters are identified thanks to experimental results, and validated through a complete campaign of laser shocks on various carbon fiber reinforced plastic (CFRP) materials (monolithic and bonded). Finally, numerical results for bonded composites are discussed. They enable to understand the stress distribution within the composite assembly during the wave propagation. This is a key step toward the development of a reliable and controlled laser shock adhesion test.

Mots clés: Adhesion test; Bonded composites; Bonding quality assessment; CFRP composites; Laser-induced shock; Shock propagation modeling

Domaines: Sciences de l'ingénieur [physics]

Romain Ecault, Fabienne Touchard, Michel Boustié, Laurent Berthe, Nicolas Dominguez. Numerical modeling of laser-induced shock experiments for the development of the adhesion test for bonded composite materials. Composite Structures, 2016, 152, pp.382-394. ⟨10.1016/j.compstruct.2016.05.032⟩. ⟨hal-02290960⟩