US-Polish Cooperative Research: Texture Analysis with Discrete Methods

小行星9411666 加州大学伯克利分校的Hans-Rudolf Wenk博士和波兰科学院Krupowski金属研究所的Jan Pospiech博士之间的这个美国-波兰研究项目是“离散方法的纹理分析”。" PAN Krakow和加州大学伯克利分校之间的跨学科研究协调努力，以获得多晶材料的取向特征的定量信息，特别是那些具有低晶体和样品对称性的材料，这些材料不仅在地质学中是典型的，而且在陶瓷和聚合物科学中也是如此。 他们表明，离散方法具有明显的优势，可以从最少量的实验极图数据中获得取向分布（OD）。 离散方法也可用于获得描述取向之间的相关性的取向差函数（MOD）和其他取向特性。 这已被说明为铜，石英和方解石。 研究人员现在建议通过推广计算机程序来完成这个项目，以分析单个方向测量，并添加组件方法的元素来紧凑地表示纹理数据，所有这些都使用离散方法，而不是容易引入伪影的谐波方法。 计划将提供给纹理社区进行测试和应用，以使比主要研究人员的实验室更大的选区受益。 这个地质科学项目实现了促进科学知识的计划目标，使波兰和美国的领先专家能够在具有强烈共同利益和能力的领域联合收割机互补人才和资源。 ***

9411666 Wenk This US-Poland Research project between Dr. Hans-Rudolf Wenk of the University of California-Berkeley, and Dr. Jan Pospiech of the Krupowski Institute for Metals Research of the Polish Academy of Sciences, is a "Texture Analysis with Discrete Methods." Interdisciplinary research between PAN Krakow and UC Berkeley coordinated efforts to obtain quantitative information of orientation characteristics of polycrystalline materials, particularly those with low crystal and sample symmetry which are not only typical in geology but in ceramics and polymer science as well. They showed that discrete methods have distinct advantages to obtain the orientation distribution (OD) from a minimum amount of experimental pole figure data. Discrete methods are also useful to obtain misorientation functions (MOD) and other orientation characteristics describing correlations between orientations. This has been illustrated for copper, quartz and calcite. The researchers now propose to conclude this project by generalizing computer programs for analysis of individual orientation measurements and adding elements of the component method for compact representation of texture data, all using a discrete approach rather than the harmonic method which easily introduces artifacts. Programs will be made available to the texture communities for testing and application to benefit a larger constituency than the laboratories of the principal investigators. This project in geological sciences fulfills the program objective of advancing scientific knowledge by enabling leading experts in Poland and the United States to combine complementary talents and pool resources in areas of strong mutual interest and competence. ***