A Referenceless Approach for Ultra-Low Thermal Expansion Measurements

9411756 Vikram这是在陶瓷项目中提交的SGER建议书。PI旨在引入一种全新的光学方法来测量不规则形状和大小的样品的超低热膨胀系数。该方法是自我校准的，以前从未进行过测试。来自样品的散射光(其中I=光的强度，A=样品的面积，L=样品的线性尺寸)将被用作精确测量热膨胀系数的方法。这是对一个未经检验的、新颖的、从根本上合理的想法的初步工作。%该工作旨在介绍一种新的测量不规则形状物体热膨胀系数的方法，该方法采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. ***