Réalisation d'un caisson hermétique pour essais dynamiques

A new dynamic testing system under vacuum or controlled environment had been realized. It has been mounted on the frame of an electro-hydraulic machine (capacity : 2 500 daN, stroke : 100 mm). The tightness is obtained with metallic bellows. The tests which had been carried out, confirm the fiability of this system and the ease with it can be utilized to study the effect of environment at a vacuum of less than 5 x 10-3 Pa or any