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High Temperature Monitoring by means of Electrical Properties of CMC Materials under Tensile Stress

Stäbler, Tina and Böhrk, Hannah and Voggenreiter, Heinz (2017) High Temperature Monitoring by means of Electrical Properties of CMC Materials under Tensile Stress. In: 21st AIAA International Space Planes and Hypersonic Systems and Technologies Conference. 21st AIAA International Space Planes and Hypersonics Technologies Conference, 6.-9. März 2017, Xiamen, China. DOI: 10.2514/6.2017-2291

Full text not available from this repository.

Official URL: https://arc.aiaa.org/doi/10.2514/6.2017-2291

Abstract

Damage to thermal protection systems (TPS) during atmospheric re-entry is a severe safety issue, especially when considering re-usability of space transportation systems. There is a need for structural health monitoring systems and non-destructive inspection methods. However, damages are hard to detect. When ceramic matrix composites, in this case carbon fibre reinforced silicon carbide (C/C-SiC), are used as a TPS, the electrical properties of the present semiconductor material can be used for health monitoring, since the resistivity changes with damage, strain and temperature. In this work the electrical resistivity as a function of the material temperature and tensile stress is analysed. A sensor network is applied for locally and time resolved monitoring of the 300 mm x 120 mm x 3 mm panel shaped samples. Since the material is used for atmospheric re-entry it needs to be characterised for a wide range of temperatures up to 2000 �°C. Therefore, experiments in an inductively heated test bench were conducted. Behaviour of electrical resistance under heat load as well as tensile stress is analysed and discussed and a formula to calculate the specific electric resistance is established.

Item URL in elib:https://elib.dlr.de/114404/
Document Type:Conference or Workshop Item (Speech)
Title:High Temperature Monitoring by means of Electrical Properties of CMC Materials under Tensile Stress
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stäbler, Tinabt-rsihttps://orcid.org/0000-0002-3645-1423
Böhrk, Hannahbt-rsiUNSPECIFIED
Voggenreiter, Heinzbt-Ltg.UNSPECIFIED
Date:6 March 2017
Journal or Publication Title:21st AIAA International Space Planes and Hypersonic Systems and Technologies Conference
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2017-2291
Status:Published
Keywords:Zustandsüberwachung, CMC, elektrische Eigenschaften
Event Title:21st AIAA International Space Planes and Hypersonics Technologies Conference
Event Location:Xiamen, China
Event Type:international Conference
Event Dates:6.-9. März 2017
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Shefex III
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Space System Integration
Deposited By: Stäbler, Tina
Deposited On:06 Oct 2017 11:39
Last Modified:06 Oct 2017 11:39

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