Method for manufacturing a part made of reinforced composite material

A composite material method using high and low Young's modulus matrices in a fibrous preform process enhances impact resistance and energy dissipation in gas turbine engine casings, addressing structural integrity challenges.

WO2026125859A1 Publication Date: 2026-06-18SAFRAN SA
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SAFRAN SA
Filing Date
2025-12-11
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing composite material casings in gas turbine engines face challenges in enhancing retention capacity while maintaining structural integrity and vibrational stability, particularly under high impact energies from blade fragments.

⚗Method used

A method involving the use of a structural part with a high Young's modulus matrix (>2 GPa) for stiffness and a reinforcement part with a low Young's modulus matrix (<0.5 GPa) for energy dissipation, combined through a fibrous preform process including 3D weaving, to create a composite material part with improved impact resistance without altering structural properties.

🎯Benefits of technology

The composite material part achieves significant impact resistance and energy dissipation, outperforming metallic materials in retaining debris and maintaining structural integrity under high impact energies.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a method for manufacturing a part (10) made of reinforced composite material, the method comprising: - producing a preform of a structural portion impregnated with a first matrix precursor having a Young's modulus greater than or equal to 2 GPa; - transforming the first precursor into a first matrix in order to obtain a structural portion (11) densified with a first matrix having a Young's modulus greater than or equal to 2 GPa; - producing a preform of a reinforcing portion impregnated with a second matrix precursor having a Young's modulus less than or equal to 0.5 GPa; - bonding the preform of the reinforcing portion to the structural portion; - transforming the second matrix precursor of the preform of the reinforcing portion so as to obtain a part made of reinforced composite material, comprising a reinforcing portion (12) densified with a second matrix having a Young's modulus less than or equal to 0.5 GPa and the structural portion.
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