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Setup to Measure the Coefficient of Thermal Expansion (CTE) of Ultra Stable Materials at Temperature Range from 100K to 300K

Burow, Rick and Spannagel, Ruven and Schuldt, Thilo and Sanjuan, Jose and Gohlke, Martin and Fitzsimons, Ewan and Johann, Ulrich and Weise, Dennis and Braxmaier, Claus (2015) Setup to Measure the Coefficient of Thermal Expansion (CTE) of Ultra Stable Materials at Temperature Range from 100K to 300K. DPG Tagung 2015, Heidelberg, Germany.

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Abstract

For space and terrestrial applications dimensionally highly stable materials are needed, e.g. to enable precise measurements. This property of the ultra stable materials, like glass-­ceramics or composite materials, is characterized by the Coefficient of Thermal Expansion (CTE). Space applications, like optical systems or sensors, often have a wide operating temperature range, where the CTEs of used materials have to be determined also at cryogenic temperatures. The basic of our setup is a heterodyne laser interferometer, that measures length variations of the sample caused by temperature changes. Our setup is an improvement of the existing facility at room temperature and allows to define CTEs at the temperature range from 100K to 300K. The mechanical and thermal design were improved, due to new requirements. The reached accuracy at room temperature is 10ppb/K, which is also the goal for the new setup.

Item URL in elib:https://elib.dlr.de/102909/
Document Type:Conference or Workshop Item (Speech)
Title:Setup to Measure the Coefficient of Thermal Expansion (CTE) of Ultra Stable Materials at Temperature Range from 100K to 300K
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Burow, RickDLR-RY, BremenUNSPECIFIED
Spannagel, RuvenDLR-RY, BremenUNSPECIFIED
Schuldt, ThiloDLR-RY, BremenUNSPECIFIED
Sanjuan, JoseDLR-RYUNSPECIFIED
Gohlke, MartinDLR-RY, BremenUNSPECIFIED
Fitzsimons, EwanAirbus Defence & Space, FriedrichshafenUNSPECIFIED
Johann, UlrichAstrium FriedrichshafenUNSPECIFIED
Weise, DennisAstrium GmbH–Satellites, 88039 Friedrichshafen, GermanyUNSPECIFIED
Braxmaier, Clausclaus.braxmaier (at) dlr.deUNSPECIFIED
Date:2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Accepted
Keywords:low coefficient of thermal Expansion, space missions
Event Title:DPG Tagung 2015
Event Location:Heidelberg, Germany
Event Type:national Conference
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: Aguilera, Deborah
Deposited On:10 Feb 2016 12:07
Last Modified:15 Mar 2016 12:41

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