Directivity patterns of ultrasonic waves generated by a laser pulse at the interface between two elastic media

E. Anagnostopoulos (1) , D. Ségur (1) , T. Dehoux (2) , Bertrand Audoin (2)

1 DISC (CEA, LIST) - Département Imagerie et Simulation pour le Contrôle (CEA, LIST)
2 I2M - Institut de Mécanique et d'Ingénierie de Bordeaux

Directivity patterns of an acoustic source generated by the absorption of a laser pulse at the interface between a transparent epoxy-resin half-space and an opaque CFRP isotropised half-space have been calculated using the reciprocity theorem. Longitudinal and shear radiation patterns of acoustic field emitted in the CFRP are compared in respect with the loading surface condition.

Domaines: Physique [physics]

E. Anagnostopoulos, D. Ségur, T. Dehoux, Bertrand Audoin. Directivity patterns of ultrasonic waves generated by a laser pulse at the interface between two elastic media. 42nd annual review of progress in quantitative nondestructive evaluation: Incorporating the 6th European-American Workshop on Reliability of NDE, Jul 2015, Minneapolis, United States. ⟨10.1063/1.4940536⟩. ⟨cea-01827754⟩