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Ubiquitous Computing Application and Wireless Sensor pp 1–9Cite as

Voronoi Diagram and Microstructure of Weldment

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Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 331))

Abstract

One of the famous space decomposition algorithm known as Voronoi diagram is applied to express metal’s microstructure for the first time by fortuitous discovery of superficial analogy of Voronoi cell and metal’s crystal grain. Areas of Voronoi cells are controlled by locations and the number of seed points. And it can be correlated to grain size of microstructure and nuclei numbers. Therefore grain coarsening and refinement of microstructure can be described by Voronoi tessellation for simple case. In addition to this, columnar crystal caused by rapid cooling rate in one direction is also described by anisotropic locations of seed points which can be observed in typical weldment in easy. Although it needs more profound research about correlation between crystal grain growth and Voronoi diagram control variables, it shows fairly reasonable feasibility of adopting Voronoi tesselation as metal’s microstructure description and prediction tool.

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Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning. (Grant No. 2012R1A1A1012487)

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Authors and Affiliations

  1. School of Mechanical Engineering, Chungbuk National University, Cheongju, Korea

    Jungho Cho

  2. School of Information and Communication Engineering, Chungbuk National University, 52 Naesudong-ro, Heunduk-gu, Cheongju, 363-761, Korea

    Min Choi

Authors
  1. Jungho Cho
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  2. Min Choi
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Corresponding author

Correspondence to Min Choi .

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Editors and Affiliations

  1. Computer Science and Engineering, Seoul National University of Science & Technology SeoulTech, Seoul, Korea, Republic of (South Korea)

    James J. (Jong Hyuk) Park

  2. Department of Computer Science, Georgia State University, Atlanta, Georgia, USA

    Yi Pan

  3. President, National Ilan University, Yilan City, Taiwan

    Han-Chieh Chao

  4. Computer Science & Engineering, Gangneung-Wonju Natioanl University, Wonju, Korea, Republic of (South Korea)

    Gangman Yi

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© 2015 Springer Science+Business Media Dordrecht

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Cho, J., Choi, M. (2015). Voronoi Diagram and Microstructure of Weldment. In: Park, J., Pan, Y., Chao, HC., Yi, G. (eds) Ubiquitous Computing Application and Wireless Sensor. Lecture Notes in Electrical Engineering, vol 331. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-9618-7_1

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  • DOI: https://doi.org/10.1007/978-94-017-9618-7_1

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  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-017-9617-0

  • Online ISBN: 978-94-017-9618-7

  • eBook Packages: EngineeringEngineering (R0)

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