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首页> 外文会议>2014 International Symposium on Optomechatronic Technologies >Measurement Setup to Determine Thermal Expansions from 100 K to 300 K of Ultra Stable Materials Used in Space Applications
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Measurement Setup to Determine Thermal Expansions from 100 K to 300 K of Ultra Stable Materials Used in Space Applications

机译：测量设置，确定用于太空应用的100 K至300 K超稳定材料的热膨胀

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摘要

In this article we present the status of our new setup to determine coefficients of thermal expansions (CTE) of ultra stable materials at temperatures from 300K down to 100 K. Such low CTE materials are important for dimensionally stable structures in space and terrestrial applications e.g. To enable precise measurements. This setup is an advancement of a measurement facility for CTE determination at room temperature with demonstrated measurements of CTE values down to 10ppb/K. Due to the high temperature differences of the new setup, the mechanical and thermal setup is very important. The mechanical transfer function between interferometer and the device under test (DUT) has to be high and the thermal transfer function has to be very low to achieve the required accuracy. An overview of the new setup and its subsystems is given in this article with a measurement of the sensitivity of the interferometer.
机译：在本文中，我们介绍了用于确定超稳定材料在300K至100 K的温度下的热膨胀系数（CTE）的新设置的状态。这种低CTE的材料对于空间和地面应用中的尺寸稳定结构非常重要。进行精确测量。此设置是在室温下测定CTE的测量设备的改进，已证明的CTE值测量值可低至10ppb / K。由于新设置的高温差异，机械和热设置非常重要。干涉仪和被测器件（DUT）之间的机械传递函数必须很高，而热传递函数必须非常低才能达到所需的精度。本文对新设置及其子系统进行了概述，并对干涉仪的灵敏度进行了测量。

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