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Effects of sample size on swelling and shrinkage of Larix kaempferi and Cryptomeria japonica as determined by digital caliper, image analysis, and digital image correlation (DIC)

  • So Sun Lee and Gi Young Jeong EMAIL logo
From the journal Holzforschung


Swelling (Sw) and shrinking (Sh) of Larix kaempferi and Cryptomeria japonica woods were observed with the methods digital caliper, image analysis, and digital image correlation (DIC) as a function of cubic sample sizes (203, 503, and 1003 mm3) and the three anatomical directions of wood. The moisture content (MC) of the samples was 19, 12, and 8%, such as MC→ and MCsatur. Coefficients of swelling were significantly different at the three sample sizes. Coefficients of shrinking were significantly different by species and sample size. Results of DIC revealed that the magnitude of mixed Sw/Sh behaviors increased with increasing sample size.

Corresponding author: Gi Young Jeong, PhD, Associate Professor, Department of Wood Science and Engineering, Chonnam National University, 77 Yongbongro Bukgu, Gwangju 500-757, South Korea


This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (2013R1A1A 1006820).

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Employment or leadership: None declared.

  4. Honorarium: None declared.


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Received: 2017-7-31
Accepted: 2017-12-18
Published Online: 2018-1-20
Published in Print: 2018-6-27

©2018 Walter de Gruyter GmbH, Berlin/Boston

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