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Impact of knots on the fracture propagating along grain in timber beams

Jockwer, Robert; Serrano, Erik LU ; Gustafsson, Per-Johan LU and Steiger, René (2017) In International Wood Products Journal2010-01-01+01:00 8(sup1). p.39-44
Abstract
Fracture propagating along the grain of timber is one of the most relevant failure mechanisms due to the wood’s low strength and its brittle failure behaviour when subjected to excessive shear and tensile stresses perpendicular to the grain. According to the current procedures, the fracture energy of wood is determined on small clear specimens. However, for the prediction of the structural behaviour of full-scale structural timber members, the influence of knots has to be accounted for. The discrepancy between the fracture behaviour of small specimens and members of structural size has already been observed in several studies. The aim of this paper is to provide a review on a selection of these studies and to discuss their relevancy for... (More)
Fracture propagating along the grain of timber is one of the most relevant failure mechanisms due to the wood’s low strength and its brittle failure behaviour when subjected to excessive shear and tensile stresses perpendicular to the grain. According to the current procedures, the fracture energy of wood is determined on small clear specimens. However, for the prediction of the structural behaviour of full-scale structural timber members, the influence of knots has to be accounted for. The discrepancy between the fracture behaviour of small specimens and members of structural size has already been observed in several studies. The aim of this paper is to provide a review on a selection of these studies and to discuss their relevancy for the evaluation of the fracture properties and the structural behaviour of full-scale structural timber. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
fracture energy, glued laminated timber, full-scale testing, notched beams
in
International Wood Products Journal2010-01-01+01:00
volume
8
issue
sup1
pages
39 - 44
publisher
Maney Publishing
external identifiers
  • scopus:85010664405
ISSN
2042-6445
DOI
10.1080/20426445.2016.1275093
language
English
LU publication?
yes
id
7512391c-95ba-47c1-8ffc-a4389a56e939
date added to LUP
2017-01-23 23:17:55
date last changed
2018-02-18 22:27:55
@article{7512391c-95ba-47c1-8ffc-a4389a56e939,
  abstract     = {Fracture propagating along the grain of timber is one of the most relevant failure mechanisms due to the wood’s low strength and its brittle failure behaviour when subjected to excessive shear and tensile stresses perpendicular to the grain. According to the current procedures, the fracture energy of wood is determined on small clear specimens. However, for the prediction of the structural behaviour of full-scale structural timber members, the influence of knots has to be accounted for. The discrepancy between the fracture behaviour of small specimens and members of structural size has already been observed in several studies. The aim of this paper is to provide a review on a selection of these studies and to discuss their relevancy for the evaluation of the fracture properties and the structural behaviour of full-scale structural timber.},
  author       = {Jockwer, Robert and Serrano, Erik and Gustafsson, Per-Johan and Steiger, René},
  issn         = {2042-6445},
  keyword      = {fracture energy,glued laminated timber,full-scale testing,notched beams},
  language     = {eng},
  month        = {08},
  number       = {sup1},
  pages        = {39--44},
  publisher    = {Maney Publishing},
  series       = {International Wood Products Journal2010-01-01+01:00},
  title        = {Impact of knots on the fracture propagating along grain in timber beams},
  url          = {http://dx.doi.org/10.1080/20426445.2016.1275093},
  volume       = {8},
  year         = {2017},
}