AMESDEP

AMESDEP proposes a multi-scale approach to study the impact of manufacturing-induced draping defects on the thermomechanical damage and permeability of thermoplastic composites intended for liquid hydrogen storage. This issue is critical for cryogenic tanks, where removing the liner requires precise control of composite permeability.

The project specifically focuses on defects associated with Automated Fiber Placement (AFP), such as gaps and overlaps, which can affect mechanical properties and promote cracking, while their effects under cryogenic conditions remain little explored.

It is structured around three main axes: 1) characterizing AFP defects and their influence on the thermomechanical behavior of thin and thick laminates, 2) linking these defects to composite permeability through experimental tests on flat and tubular samples with calibrated singularities, 3) improving the prediction of cracking scenarios using multi-scale modeling of the relationship between defects and damage mechanisms.

The CERI MP of IMT Nord Europe, leading one of the project’s axes, concentrates particularly on the study of real manufacturing defects and their effects on permeability under extreme conditions, with the aim of better understanding composite behavior and guiding the design of low-permeability cryogenic tanks.

Founder: Agence Nationale de la Recherche (ANR) – AAPG 2025 – CE51 ‘’Sciences de l’ingénierie et des procédés‘’ – Programme PRC (projets de recherche collaborative entre entités publiques)

Duration: 2025 – 2029

Partners:
I2M (site de l’ENSAM Talence-Bordeaux)
Institut Clément Ader (CNRS)
CERI MP (IMT Nord Europe)