A thermal deformation test technique robust to change in room temperature using multiple periodic heating

研究成果: Conference contribution

抄録

As the shape accuracy requirement of space-based space observation instruments becomes stricter, the measurement accuracy of thermal deformation tests needs to improve. The conventional test technique using static heating and evaluation in the equilibrium states before and after heat input is influenced by disturbances such as the change in room temperature and the thermal deformation of the jigs fixing the test article and measurement devices. The authors proposed a test technique using periodic heating and evaluation in the frequency domain. The evaluation in the frequency domain can eliminate the disturbances with a frequency sufficiently different from the heat input. The thermal deformation of multiple parts of a test article can be evaluated simultaneously by applying periodic heating with different frequencies to each part. An experiment and numerical analysis using a truss structure are conducted to evaluate the performance of the proposed test technique. From the experimental and numerical results, the elimination of the effect of room temperature change and the simultaneous evaluation of multiple parts of a test article are demonstrated. As a result, the effectiveness of the proposed thermal deformation test technique is shown.

本文言語English
ホスト出版物のタイトルAIAA Scitech 2021 Forum
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
ページ1-8
ページ数8
ISBN(印刷版)9781624106095
出版ステータスPublished - 2021
イベントAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021 - Virtual, Online
継続期間: 2021 1 112021 1 15

出版物シリーズ

名前AIAA Scitech 2021 Forum

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
CityVirtual, Online
Period21/1/1121/1/15

ASJC Scopus subject areas

  • Aerospace Engineering

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