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Secure tightening of a CMC fastener for the heat shield of re-entry vehicles

Böhrk, Hannah and Beyermann, Ulrich (2009) Secure tightening of a CMC fastener for the heat shield of re-entry vehicles. Composite Structures, 92 (2010), pp. 107-112. Elsevier. DOI: 10.1016/j.compstruct.2009.07.002

Full text not available from this repository.

Official URL: http://www.elsevier.com/locate/compstruct

Abstract

The results of static and hot tests of ceramic matrix composite fasteners for heat shield attachment to a re-entry vehicle are presented. Herein, the effect of the high temperature cycle occurring during atmospheric re-entry on the reduction of the tightening torque of the CMC fasteners is investigated. From cold testing, it is found that the Young’s modulus of the material decreases with first-time loading and, therefore, previous loading of the fasteners before their application is recommended. In hot testing of a fully integrated fastener connection, the material temperatures within the connection are experimentally simulated. It is shown that with previous straining, a significant improvement of the fastener is achieved. The loosening torque is no longer reduced by thermally induced stretching of the fastener.

Item URL in elib:https://elib.dlr.de/60166/
Document Type:Article
Title:Secure tightening of a CMC fastener for the heat shield of re-entry vehicles
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Böhrk, HannahUNSPECIFIEDUNSPECIFIED
Beyermann, UlrichUNSPECIFIEDUNSPECIFIED
Date:2009
Journal or Publication Title:Composite Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:92
DOI :10.1016/j.compstruct.2009.07.002
Page Range:pp. 107-112
Publisher:Elsevier
Status:Published
Keywords:CMC Ceramic Fastener Re-entry Heat-shield
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Vorhaben SHEFEX (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Space Structural Components
Deposited By: Böhrk, Hannah
Deposited On:03 Dec 2009 10:46
Last Modified:26 Mar 2013 13:12

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