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Dilatometer setup for low coefficient of thermal expansion materials measurements in the 140 K-250 K temperature range

Spannagel, Ruven and Hamann, Ines and Sanjuan, Jose and Schuldt, Thilo and Gohlke, Martin and Johann, U. and Weise, Dennis and Braxmaier, Claus (2016) Dilatometer setup for low coefficient of thermal expansion materials measurements in the 140 K-250 K temperature range. Review of Scientific Instruments, 87 (10). American Institute of Physics (AIP). DOI: 10.1063/1.4965813 ISSN 0034-6748

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Official URL: http://scitation.aip.org/content/aip/journal/rsi/87/10/10.1063/1.4965813

Abstract

Space applications demand light weight materials with excellent dimensional stability for telescopes, optical benches, optical resonators, etc. Glass-ceramics and composite materials can be tuned to reach very low coefficient of thermal expansion (CTE) at different temperatures. In order to determine such CTEs, very accurate setups are needed. Here we present a dilatometer that is able to measure the CTE of a large variety of materials in the temperature range of 140 K to 250 K. The dilatometer is based on a heterodyne interferometer with nanometer noise levels to measure the expansion of a sample when applying small amplitude controlled temperature signals. In this article, the CTE of a carbon fiber reinforced polymer sample has been determined with an accuracy in the 10−8 K−1 range.

Item URL in elib:https://elib.dlr.de/111114/
Document Type:Article
Title:Dilatometer setup for low coefficient of thermal expansion materials measurements in the 140 K-250 K temperature range
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Spannagel, Ruvendlr-ry, bremenUNSPECIFIED
Hamann, Inesdlr-ryUNSPECIFIED
Sanjuan, Josedlr-ryUNSPECIFIED
Schuldt, Thilodlr-ry, bremenUNSPECIFIED
Gohlke, Martindlr-ry, bremenUNSPECIFIED
Johann, U.Airbus DS, FriedrichshafenUNSPECIFIED
Weise, DennisAirbus DS, FriedrichtshafenUNSPECIFIED
Braxmaier, Clausclaus.braxmaier (at) dlr.deUNSPECIFIED
Date:October 2016
Journal or Publication Title:Review of Scientific Instruments
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:87
DOI :10.1063/1.4965813
Publisher:American Institute of Physics (AIP)
ISSN:0034-6748
Status:Published
Keywords:Dilatometer, thermal Expansion, CTE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben GRACE Follow-On
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systems Enabling Technologies
Deposited By: Hüls, Simone
Deposited On:14 Feb 2017 09:30
Last Modified:06 Sep 2019 15:29

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