Modelling the effect of porosity on the mechanical properties of unidirectional composites. The case of thick-walled pressure vessels

Jan Rojek (1) , Sébastien Joannès (1) , Mark Mavrogordato , Lucien Laiarinandrasana (1) , Anthony Bunsell (1) , Alain Thionnet (2, 1)

1 MAT - Centre des Matériaux
2 UB - Université de Bourgogne

The present article highlights morphological features present in composite pressure vessels. The use of X-ray microtomography provides three-dimensional information about the voids in a large thick-walled type 3 pressure vessel at the mesoscopic scale. The observations show that the porosity structure depends strongly on composite thickness and orientation. A numerical approach is proposed to model realistically the damage phenomena in pressure vessels.

Mots clés: microtomography; filament winding; pressure vessels; porosity

Domaines: Sciences de l'ingénieur [physics]; Matériaux; Sciences de l'ingénieur [physics]; Mécanique [physics.med-ph]; Mécanique des matériaux [physics.class-ph]

Jan Rojek, Sébastien Joannès, Mark Mavrogordato, Lucien Laiarinandrasana, Anthony Bunsell, et al.. Modelling the effect of porosity on the mechanical properties of unidirectional composites. The case of thick-walled pressure vessels. ECCM 18 - 18th European Conference on Composite Materials, Jun 2018, Athens, Greece. 7 p. ⟨hal-01958201⟩