Online characterization of fiber-reinforced thermoplastic composite deconsolidation

Luc Amedewovo (1, 2) , Steven Le Corre (1) , Basile de Parscau Du Plessix (2) , Laurent Orgéas (3) , Arthur Lévy (1)

1 LTeN - Laboratoire de Thermique et d’Energie de Nantes
2 Nantes Univ - IRT - Nantes Université -Institut de Recherche Technologique Jules Verne
3 3SR - Laboratoire sols, solides, structures - risques [Grenoble]

Deconsolidation occurs in a fiber-reinforced thermoplastic composite when it is heated above a certain temperature. During heating in manufacturing processes (for example in welding, AFP, thermostamping, …), when low pressure is applied, porosities can appear in different forms (bubbles, delaminations, etc.). Various works have been carried out in the literature to understand this phenomenon. In most of these works, deconsolidation is characterized by post-mortem analyzes or thermomechanical analyzes (TMA). However, these methods do not highlight deconsolidation mechanisms. In order to overcome these limitations, a new device for deconsolidation characterization is developed. It makes it possible to characterize online and continuously the deconsolidation of fiber-reinforced thermoplastic composite laminates. First results on moisture and residual stress effect on deconsolidation, were obtained on aerospace grade composite material (Carbon fiber/PEKK laminates).

Mots clés: Fiber-reinforced Thermoplastic composite; Deconsolidation; Porosity; Real time Characterization; Thickness Variation

Domaines: Thermique [physics.class-ph]

Luc Amedewovo, Steven Le Corre, Basile de Parscau Du Plessix, Laurent Orgéas, Arthur Lévy. Online characterization of fiber-reinforced thermoplastic composite deconsolidation. 20th European Conference on Composite Materials, ECCM20, Jun 2022, Lausanne, Switzerland. pp.462-469. ⟨hal-03762013⟩