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Wood Research and Technology

Holzforschung

Cellulose – Hemicelluloses – Lignin – Wood Extractives

Editor-in-Chief: Salmén, Lennart

Editorial Board: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Burgert, Ingo / Rio, Jose C. / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Koch, Gerald / Lachenal, Dominique / Laine, Christiane / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Potthast, Antje / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Sipilä, Jussi / Takano, Toshiyuki / Tamminen, Tarja / Theliander, Hans / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi


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Volume 67, Issue 7

Issues

Mechanical performance of yew (Taxus baccata L.) from a longbow perspective

Ingela Bjurhager
  • Corresponding author
  • Royal Institute of Technology (KTH), Fiber and Polymer Department, Stockholm, Sweden
  • The Ångström Laboratory, Division of Applied Mechanics, Department of Engineering Sciences, Uppsala, Sweden
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ E. Kristofer Gamstedt
  • The Ångström Laboratory, Division of Applied Mechanics, Department of Engineering Sciences, Uppsala, Sweden
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  • De Gruyter OnlineGoogle Scholar
/ Daniel Keunecke
  • Institute for Building Materials (Wood Physics), Swiss Federal Institute of Technology (ETG) Zurich, Switzerland
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  • De Gruyter OnlineGoogle Scholar
/ Peter Niemz
  • Institute for Building Materials (Wood Physics), Swiss Federal Institute of Technology (ETG) Zurich, Switzerland
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  • De Gruyter OnlineGoogle Scholar
/ Lars A. Berglund
  • Royal Institute of Technology (KTH), Fiber and Polymer Department, Stockholm, Sweden
  • Royal Institute of Technology (KTH), Wallenberg Wood Science Center, Stockholm, Sweden
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Published Online: 2013-03-13 | DOI: https://doi.org/10.1515/hf-2012-0151

Abstract

Yew (Taxus baccata L.) longbow was the preferred weapon in the Middle Ages until the emergence of guns. In this study, the tensile, compression, and bending properties of yew were investigated. The advantage of yew over the other species in the study was also confirmed by a simple beam model. The superior toughness of yew has the effect that a yew longbow has a higher range compared with bows made from other species. Unexpectedly, the mechanical performance of a bow made from yew is influenced by the juvenile-to-mature wood ratio rather than by the heartwood-to-sapwood ratio. A yew bow is predicted to have maximized performance at a juvenile wood content of 30–50%, and located at the concave side (the compressive side facing the bowyer). Here, the stiffness and yield stress in compression should be as high as possible.

Keywords: archery; axial strength; longbow; bending tests; yew (Taxus baccata L.)

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About the article

Corresponding author: Ingela Bjurhager, The Ångström Laboratory, Division of Applied Mechanics, Department of Engineering Sciences, Box 534, SE-751 21 Uppsala, Sweden, Phone: +46(0)18-4717259, e-mail:


Received: 2012-09-19

Accepted: 2013-01-18

Published Online: 2013-03-13

Published in Print: 2013-10-01


Citation Information: Holzforschung, Volume 67, Issue 7, Pages 763–770, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: https://doi.org/10.1515/hf-2012-0151.

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