Critical discussion of perpendicular to grain tension testing of structural timber – case study on the European hardwoods ash, beech and maple. Schlotzhauer, P., Ehrmann, A., Bollmus, S., & Militz, H. Wood Material Science & Engineering, 15(5):278–288, September, 2020. Publisher: Taylor & Francis _eprint: https://doi.org/10.1080/17480272.2019.1596157![Critical discussion of perpendicular to grain tension testing of structural timber – case study on the European hardwoods ash, beech and maple [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex 1 download Knowledge about perpendicular to grain tension behavior of wood is essential, since in construction tension stresses perpendicular to grain cannot be avoided completely. Especially for hardwoods, the data basis is scarce. EN 338 design values are with 0.6 N/mm² characteristic strength set very low. The US-American National Design Specifications even set this value to zero and make local reinforcements mandatory. This paper compares strength and stiffness values attained with newly-designed, little, prismatic specimens and EN 408 structural timber specimens to evaluate the current European design values. Little specimen’s characteristic strength values range from 7.2 to 10.6 N/mm² and are assumed to be real material properties. EN 408 specimen values are with approximately 4.0 N/mm² lower. These lower values are mainly due to stress peaks introduced by the force introduction. Strength values attained for the medium-dense European hardwoods beech, ash and maple exceed EN 338 design values by a factor of six to seven. Adaptation of the EN 338 design value is not recommended, though. The abundance of influencing factors makes clear that the design value and the ensuing design code have to be synchronized carefully by tedious testing in order to make use of the perpendicular to grain tension strength potential of the selected hardwoods.
@article{schlotzhauer_critical_2020,
title = {Critical discussion of perpendicular to grain tension testing of structural timber – case study on the {European} hardwoods ash, beech and maple},
volume = {15},
issn = {1748-0272},
url = {https://doi.org/10.1080/17480272.2019.1596157},
doi = {10.1080/17480272.2019.1596157},
abstract = {Knowledge about perpendicular to grain tension behavior of wood is essential, since in construction tension stresses perpendicular to grain cannot be avoided completely. Especially for hardwoods, the data basis is scarce. EN 338 design values are with 0.6 N/mm² characteristic strength set very low. The US-American National Design Specifications even set this value to zero and make local reinforcements mandatory. This paper compares strength and stiffness values attained with newly-designed, little, prismatic specimens and EN 408 structural timber specimens to evaluate the current European design values. Little specimen’s characteristic strength values range from 7.2 to 10.6 N/mm² and are assumed to be real material properties. EN 408 specimen values are with approximately 4.0 N/mm² lower. These lower values are mainly due to stress peaks introduced by the force introduction. Strength values attained for the medium-dense European hardwoods beech, ash and maple exceed EN 338 design values by a factor of six to seven. Adaptation of the EN 338 design value is not recommended, though. The abundance of influencing factors makes clear that the design value and the ensuing design code have to be synchronized carefully by tedious testing in order to make use of the perpendicular to grain tension strength potential of the selected hardwoods.},
number = {5},
urldate = {2020-08-24},
journal = {Wood Material Science \& Engineering},
author = {Schlotzhauer, Philipp and Ehrmann, Alexander and Bollmus, Susanne and Militz, Holger},
month = sep,
year = {2020},
note = {Publisher: Taylor \& Francis
\_eprint: https://doi.org/10.1080/17480272.2019.1596157},
keywords = {strength, stiffness, design value, EN 338, Hardwoods, perpendicular to grain, tension, test set-up},
pages = {278--288},
file = {Full Text PDF:C\:\\Users\\Eva\\Zotero\\storage\\H385PSKF\\Schlotzhauer et al. - 2020 - Critical discussion of perpendicular to grain tens.pdf:application/pdf;Snapshot:C\:\\Users\\Eva\\Zotero\\storage\\2A9W9FZD\\17480272.2019.html:text/html},
}
Downloads: 1
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