Diffusion nozzle for an ultrasonic probe

摘要

A suitable diffusion nozzle ( 20 ) for an ultrasounds probe using water as coupling agent between a piece under inspection and an acoustic transductor ( 13 ) such that the water is driven towards the surface of the material through a propulsion channel ( 21 ) surrounded by a plurality of diffusion channels ( 23 ) through which air is injected under pressure, forming an insulating screen capable of repelling the drops of water generated on the jet of water striking the surface of the material.