A Referenceless Approach for Ultra-Low Thermal Expansion Measurements

小行星9411756 这是在陶瓷计划中提交的SGER提案。 PI旨在引入一种全新的光学方法来测量不规则形状和尺寸的样品的超低热膨胀系数。 该方法是自校准的，以前未进行过测试。 来自样品的散射光（其中I =光强度，A =样品面积，l =样品的线性尺寸）将被用作精确测量热膨胀系数的方法。 这是一个未经检验的，新颖的，基本上健全的想法的初步工作。 %%%% 提出的工作旨在介绍一种新的方法来测量不规则形状的物体的热膨胀系数，通过使用一种新的未经测试的光学方法。 该技术是自校准的，在高温结构陶瓷、发动机部件等领域具有潜力。

9411756 Vikram This is a SGER proposal submitted in the Ceramic Program. The PI aims to introduce a fundamentally new optical approach to measure ultralow thermal expansion coefficients of irregular shapes and sizes of samples. The method is self calibrating and has not been tested before. The scattered light from the sample (where I = intensity of light, A = area of the sample, l = linear dimension of the sample) will be used as an approach to measure precisely the thermal expansion coefficient. This is a preliminary work on a untested, novel and fundamentally sound idea. %%%% The proposed work aims to introduce a new approach for measuring thermal expansion coefficients of irregular shaped bodies by using a new untested optical method. The technique is self-calibrating and has potential in the area of high temperature structural ceramics, engine components etc. ***