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Shear strain distribution in PRF and PUR bonded 3–ply wood sheets by means of electronic laser speckle interferometry

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Abstract

The distribution of shear strain across a 3–ply wood sheet bonded with PRF and PUR, respectively, was measured by means of electronic laser speckle interferometry. Owing to the higher shear modulus of PRF compared to PUR, shear strains were more evenly distributed in PRF bonded specimens than in PUR bonded specimens. However, considering the different shear moduli of earlywood and latewood bands in the core layer of the 3–ply sheet, it is concluded that shear stress is distributed more evenly along PUR bond lines compared to PRF bond lines. Since it is less prone to stress concentrations, PUR should provide more durable adhesive connections than stiff adhesives such as PRF.

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References

  • Gibson LJ, Ashby MF (1988) Cellular solids; structure and properties. Pergamon, Oxford

    Google Scholar 

  • Gindl W, Sretenovic A, Vincenti A, Müller U (2005) Direct measurement of strain distribution along a wood bond line – Part II: Effects of adhesive penetration on strain distribution. Holzforschung 59:307–310

    Article  CAS  Google Scholar 

  • Kollmann FFP, Côté WA (1968) Principles of wood science and technology. Springer, Berlin Heidelberg New York

    Google Scholar 

  • Müller U, Sretenovic A, Vincenti A, Gindl W (2005) Direct measurement of strain distribution along a wood bond line–Part I: Shear strain concentration in a lap joint specimen by means of electronic speckle pattern interferometry. Holzforschung 59:300–306

    Article  CAS  Google Scholar 

  • Rastogi PK (2001) Measurement of static surface displacements, derivatives of displacements, and three-dimensional surface shapes — examples of applications to non-destructive testing. In: Rastogi PK (eds) Digital speckle pattern interferometry and related techniques. Wiley, New York pp 141–224

    Google Scholar 

  • Serrano E (2004) A numerical study of the shear-strength-predicting capabilities of test specimens for wood-adhesive bonds. Int J Adhesion and Adhesives 24:23–35

    Article  CAS  Google Scholar 

  • Serrano E, Gustafsson PJ (1999) Influence of bondline brittleness and defects on the strength of timber finger joints. Int J Adhesion and Adhesives 19:9–17

    Article  CAS  Google Scholar 

  • Zink AG, Davidson RW, Hanna RB (1995) Strain measurement in wood using a digital image correlation technique. Wood Fiber Sci 27:346–359

    CAS  Google Scholar 

Download references

Acknowledgement

Financial support by the Austrian Science Fund under grant P16837-N07 is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Material Sciences and Process Engineering, BOKU-Vienna, Peter Jordan Strasse 82, 1190, Vienna, Austria

    Wolfgang Gindl & Ulrich Müller

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  1. Wolfgang Gindl
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  2. Ulrich Müller
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Correspondence to Wolfgang Gindl.

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Gindl, W., Müller, U. Shear strain distribution in PRF and PUR bonded 3–ply wood sheets by means of electronic laser speckle interferometry. Wood Sci Technol 40, 351–357 (2006). https://doi.org/10.1007/s00226-005-0051-8

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  • DOI: https://doi.org/10.1007/s00226-005-0051-8

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