Decomposable multiphase entropic descriptor

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• 作者：D. Fr膮czek ; R. Piasecki
• 关键词：Entropic descriptors ; Phase descriptors ; Multiscale analysis ; Multiphase materials
• 刊名：Physica A
• 出版年：1 April, 2014
• 年：2014
• 卷：399
• 期：Complete
• 页码：75-81
• 全文大小：1056 K

文摘

To quantify the degree of spatial inhomogeneity for multiphase materials we adapt the entropic descriptor (ED) of a pillar model developed to greyscale images. To uncover the contribution of each phase we introduce the suitable 鈥減hase splitting鈥?of the adapted descriptor. As a result, each of the phase descriptors (PDs) describes the spatial inhomogeneity attributed to each phase-component. Obviously, their sum equals the value of the overall spatial inhomogeneity. We apply this approach to three-phase synthetic patterns. The black and grey components are aggregated or clustered while the white phase is the background one. The examples show how the valuable microstuctural information related separately to each of the phases can be obtained at any integer length scale. Even dissimilar hidden statistical periodicities can be easily detected for chosen phases built-up of compact regular clusters.