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Contact-free measurement and non-linear finite element analyses of strain distribution along wood adhesive bonds

Serrano, Erik LU and Enquist, B (2005) In Holzforschung 59(6). p.641-646
Abstract
The strain distribution along wood adhesive bonds was studied using a contact-free measurement system based on a white-light digital image correlation (DIC) technique. Two different specimen geometries and three different adhesives were investigated. The specimen geometries were according to the standards EN302-1 and ASTM D905. The adhesives tested were a phenolic resorcinol (PRF), a one-component polyurethane (PUR) and an epoxy (EPX). In addition to the experimental investigation, a finite element study using a non-linear fracture mechanics model for the adhesive bond line was carried out, aimed at investigating whether deformation measurements could predict differences in the mechanical behaviour of the adhesives. The measurement... (More)
The strain distribution along wood adhesive bonds was studied using a contact-free measurement system based on a white-light digital image correlation (DIC) technique. Two different specimen geometries and three different adhesives were investigated. The specimen geometries were according to the standards EN302-1 and ASTM D905. The adhesives tested were a phenolic resorcinol (PRF), a one-component polyurethane (PUR) and an epoxy (EPX). In addition to the experimental investigation, a finite element study using a non-linear fracture mechanics model for the adhesive bond line was carried out, aimed at investigating whether deformation measurements could predict differences in the mechanical behaviour of the adhesives. The measurement technique was found to be capable of distinguishing, in terms of their strain distributions at a given load, adhesives that differed markedly from one another. For example, the brittle PRF adhesive showed more localised strains than the more ductile EPX and PUR adhesives did at the same load level. Another conclusion from this study is that the measurement technique used is applicable to situations in which large strains occur Thus, the technique used here is of great interest for use in the calibration of finite element models and constitutive theories and for the design of test set-ups. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
strain distribution, adhesive bond, contact-free, wood, strain measurement
in
Holzforschung
volume
59
issue
6
pages
641 - 646
publisher
De Gruyter
external identifiers
  • wos:000233697900008
  • scopus:29244440769
ISSN
1437-434X
DOI
10.1515/HF.2005.103
language
English
LU publication?
yes
id
a635e801-f99a-47f3-a95d-b908479f1297 (old id 211630)
date added to LUP
2007-08-08 08:52:16
date last changed
2017-10-08 03:28:31
@article{a635e801-f99a-47f3-a95d-b908479f1297,
  abstract     = {The strain distribution along wood adhesive bonds was studied using a contact-free measurement system based on a white-light digital image correlation (DIC) technique. Two different specimen geometries and three different adhesives were investigated. The specimen geometries were according to the standards EN302-1 and ASTM D905. The adhesives tested were a phenolic resorcinol (PRF), a one-component polyurethane (PUR) and an epoxy (EPX). In addition to the experimental investigation, a finite element study using a non-linear fracture mechanics model for the adhesive bond line was carried out, aimed at investigating whether deformation measurements could predict differences in the mechanical behaviour of the adhesives. The measurement technique was found to be capable of distinguishing, in terms of their strain distributions at a given load, adhesives that differed markedly from one another. For example, the brittle PRF adhesive showed more localised strains than the more ductile EPX and PUR adhesives did at the same load level. Another conclusion from this study is that the measurement technique used is applicable to situations in which large strains occur Thus, the technique used here is of great interest for use in the calibration of finite element models and constitutive theories and for the design of test set-ups.},
  author       = {Serrano, Erik and Enquist, B},
  issn         = {1437-434X},
  keyword      = {strain distribution,adhesive bond,contact-free,wood,strain measurement},
  language     = {eng},
  number       = {6},
  pages        = {641--646},
  publisher    = {De Gruyter},
  series       = {Holzforschung},
  title        = {Contact-free measurement and non-linear finite element analyses of strain distribution along wood adhesive bonds},
  url          = {http://dx.doi.org/10.1515/HF.2005.103},
  volume       = {59},
  year         = {2005},
}