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Manufacture and Test of C/C-SiC Sandwich Structures

Heidenreich, Bernhard and Bamsey, Nathan and Shi, Yuan and Such-Taboada, Miguel and Koch, Dietmar (2019) Manufacture and Test of C/C-SiC Sandwich Structures. CEAS Space Journal. Springer. doi: 10.1007/s12567-019-00263-x. ISSN 1868-2502.

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Official URL: https://rdcu.be/bIGJJ


Sandwich structures based on C/C–SiC composites (carbon fibre-reinforced carbon with silicon carbide matrix), manufactured using the liquid silicon infiltration (LSI) process and an in situ joining method, offer high specific stiffness and strength, low thermal expansion, high environmental stability, and temperature resistance. Potential application areas are thermal protection systems (TPS) for spacecraft, optical benches in satellites, and hot structures in aerospace. In this work, C/C–SiC sandwich parts of two different geometries, small sandwich samples and large sandwich structures, were manufactured and tested. Carbon fibre-reinforced polymer (CFRP) plates for the skin panels as well as for the cores were made via warm pressing of prepregs based on a 2D carbon (C) fibre fabric, preimpregnated with phenolic resin. After pyrolysis, carbon fibre-reinforced carbon (C/C) core structures were built up and joined to C/C skin panels. Finally, the resulting C/C sandwich preforms were infiltrated with molten silicon (Si), building up a silicon carbide (SiC) matrix. The resulting C/C–SiC sandwich parts were tested in four-point and three-point bending. The applied forces and the correspondent displacements and strain of the skin panels were determined. The bending and shear stiffness as well as bending moment were evaluated through analytical and finite-element (FE) simulation approaches. Furthermore, failure modes of the sandwich samples were analysed. Sandwich stiffness and ultimate bending moment obtained in the bending tests were close to the expected theoretical values, calculated on the basis of the material properties and the sandwich geometry.

Item URL in elib:https://elib.dlr.de/132900/
Document Type:Article
Title:Manufacture and Test of C/C-SiC Sandwich Structures
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Heidenreich, BernhardUNSPECIFIEDhttps://orcid.org/0000-0002-4330-8844UNSPECIFIED
Shi, YuanUNSPECIFIEDhttps://orcid.org/0000-0002-4210-9069UNSPECIFIED
Koch, DietmarUNSPECIFIEDhttps://orcid.org/0000-0003-4504-8721UNSPECIFIED
Date:4 July 2019
Journal or Publication Title:CEAS Space Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:Sandwich structures · Ceramic matrix composites · CMC · C/C-SiC · Liquid sililon infiltration · In situ joining
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Reusable Space Systems and Propulsion Technology
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design
Institute of Structures and Design > Ceramic Composite Structures
Deposited By: Heidenreich, Bernhard
Deposited On:18 Dec 2019 11:29
Last Modified:21 Nov 2023 14:25

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