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Propellant cohesive fracture during the peel test of a propellant/liner structure

Article dans une revue avec comité de lecture
Author
TOULEMONDE, Paul-Aymé
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
492366 Airbus Safran Launchers
GILORMINI, Pierre
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
JULIE, Diani
959 Laboratoire de mécanique des solides [URA 861 / UMR 6610] [LMS [Poitiers]]
DESGARDIN, Nancy
492366 Airbus Safran Launchers
NEVIÈRE, Robert
492366 Airbus Safran Launchers

URI
http://hdl.handle.net/10985/13837
DOI
10.1080/00218464.2017.1332999
Date
2018
Journal
Journal of Adhesion

Abstract

The integrity of propellant/liner structures in rocket motors is critical to ensure controlled combustion of the engine. In an effort to improve the bonding between the liner and the propellant, it is necessary to characterize it well. Therefore, a propellant–liner structure, bounded thanks to co-curing, has been submitted to a peel test while recording the macroscopic fracture energy and the local displacement field on the propellant-free surface. The experimental setup includes two cameras in order to record the displacement field on the propellant-free surface. Upon loading, the peel force stabilizes quickly due to a cohesive fracture in the propellant, providing access to the fracture energy. While the crack propagates through the propellant, it is observed that only a small localized area is submitted to strain, and most of the structure remains unstrained.

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