Application De L'holographie Ultra-Rapide A La Visualisation De Defauts Dans Les Materiaux Excites Par Chocs

Two monomode pulse ruby lasers are used for recording double exposure holograms of aircraft structures under-going non-destructive shocks. Thus various defects in an aircraft wing and in an aluminium honeycomb panel are detected. The experiments are described and illustrated with the aid of photographs taken from the holograms.