Wood Science and Technology

, Volume 45, Issue 4, pp 755–765 | Cite as

Comparison of two optical methods for contactless, full field and highly sensitive in-plane deformation measurements using the example of plywood

  • Andreas Valla
  • Johannes Konnerth
  • Daniel Keunecke
  • Peter Niemz
  • Ulrich Müller
  • Wolfgang GindlEmail author


In the present paper, the suitability of Electronic Speckle Pattern Interferometry (ESPI) and Digital Image Correlation (DIC) for the measurement of two-dimensional strain distribution on mechanically stressed wood specimens is evaluated. Particular attention is dedicated to the basics of the individual techniques in order to discuss potential advantages and disadvantages. The results of a model experiment with plywood show that the results delivered by both methods are very similar and of high quality. ESPI provides reasonably fast experimental set-up and data acquisition, and fast, straightforward post-processing. Compared to ESPI, DIC is a more versatile method demanding skilled sample preparation, and post-processing may be time consuming.


Speckle Pattern Displacement Accuracy Speckle Size Plywood Board Veneer Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



W. Gindl and A. Valla gratefully acknowledge financial support by the Austrian Science Fund FWF under grant P16837-N07.


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Andreas Valla
    • 1
  • Johannes Konnerth
    • 1
  • Daniel Keunecke
    • 2
  • Peter Niemz
    • 2
  • Ulrich Müller
    • 3
  • Wolfgang Gindl
    • 1
    Email author
  1. 1.Institute of Wood Science and Technology, Department of Material Sciences and Process EngineeringBOKU—University of Natural Resources and Applied Life SciencesViennaAustria
  2. 2.Institute for Building Materials, Department of Civil, Environmental and Geomatic EngineeringETH—Swiss Federal Institute of Technology ZurichZurichSwitzerland
  3. 3.Competence Centre for Wood Composites and Wood ChemistryLinzAustria

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