Using acoustic waves to measure the single crystal elasticity of aerospace alloys

开发新一代激光超声仪器，用于同时测量高价值航空航天合金的单晶弹性矩阵、微观结构和晶体取向。大多数金属由许多小晶体组成，构成微观结构的晶体的大小、形状、取向和分布对材料的性能有着重要影响。所有这一切的基础是单晶本身的弹性特性，值得注意的是，这些特性通常是未知的，因为测量它们是非常具有挑战性和昂贵的，因为单个单晶必须首先准备好严格的规格才能进行测量。

Develop the next generation of a laser ultrasound instrument to simultaneously measure the single-crystal elasticity matrix, the microstructure and the crystallographic orientation of high value aerospace alloys.Most metals are made up of many small crystals and the size, shape, orientation, and distribution of the crystals that make up the microstructure has a significant impact on the material's performance. Underlying all of this are the elastic properties of the single crystals themselves and, remarkably, these are often not known because measuring them is incredibly challenging and expensive because individual single crystals must first be prepared to exacting specifications before measurements can be made.