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Analysis of microdeformations in a structure of polycrystals

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Abstract

The resulting mechanical properties of structural materials are influenced by their structure, i.e. by the interaction of microscopic particles which manifests itself by the origin of microstrain and microstress fields. Their study is the source of understanding of microdeformation mechanisms influencing the history of all deformation and failure processes. The present work is concerned with the determination of strain and kinematic rotations of grains in a polycrystalline structure. The analysis of microscopic photographs is carried out by means of the photogrammetric time base method. Its data are then processed by means of affine transformation; from the coefficients thus ascertained the components of strain tensor and grain rotation vector are determined.

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Authors and Affiliations

  1. Institute of Theoretical and Applied Mechanics, Czechoslovak Academy of Sciences, Vyšehradská 49, 128 49, Prague 2, Czechoslovakia

    Ladislav Berka

  2. Faculty of Civil Engineering, Czech Technical University, Thákurova 7, 166 29, Prague 6, Czechoslovakia

    Miloslav Růžek

Authors
  1. Ladislav Berka
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  2. Miloslav Růžek
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Berka, L., Růžek, M. Analysis of microdeformations in a structure of polycrystals. J Mater Sci 19, 1486–1495 (1984). https://doi.org/10.1007/BF00563043

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  • DOI: https://doi.org/10.1007/BF00563043

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