TY - JOUR
T1 - Direct and inverse cohesive law identification of hardwood bonded joints with 1C-PUR adhesive using DCB test
AU - Majano-Majano, A.
AU - Lara-Bocanegra, A. J.
AU - Pereira, F.
AU - Xavier, J.
AU - Morais, J.
AU - de Moura, M. F. S. F.
N1 - Funding Information:
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FEEA%2F04436%2F2019/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00667%2F2020/PT#
The work is part of the R&D&I Project PID2020-112954RA-I00 funded by MCIN/AEI/10.13039/501100011033.
Publisher Copyright:
© 2023 The Authors
PY - 2023/7/15
Y1 - 2023/7/15
N2 - Fracture characterisation under mode I loading of Eucalyptus globulus Labill. bonded joints with one-component polyurethane adhesive (1C-PUR) is addressed in this work. The objective is to estimate the cohesive law representative of the fracture behaviour of these joints. A direct and two inverse procedures were employed to determine the softening laws. The direct method is based on local measurement of crack tip displacements using digital image correlation in the course of Double Cantilever Beam (DCB) tests, while the inverse methods rely on load–displacement data and on load-crack tip opening displacement relations by finite element modelling. It was verified that consistent results can be obtained from the three methodologies leading to the conclusion that the classical inverse procedure is the most appealing one owing to its simplicity.
AB - Fracture characterisation under mode I loading of Eucalyptus globulus Labill. bonded joints with one-component polyurethane adhesive (1C-PUR) is addressed in this work. The objective is to estimate the cohesive law representative of the fracture behaviour of these joints. A direct and two inverse procedures were employed to determine the softening laws. The direct method is based on local measurement of crack tip displacements using digital image correlation in the course of Double Cantilever Beam (DCB) tests, while the inverse methods rely on load–displacement data and on load-crack tip opening displacement relations by finite element modelling. It was verified that consistent results can be obtained from the three methodologies leading to the conclusion that the classical inverse procedure is the most appealing one owing to its simplicity.
KW - Cohesive law
KW - Digital image correlation
KW - Double cantilever beam
KW - Eucalyptus globulus
KW - Mode I fracture
KW - Wood
UR - http://www.scopus.com/inward/record.url?scp=85153064514&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2023.117013
DO - 10.1016/j.compstruct.2023.117013
M3 - Article
AN - SCOPUS:85153064514
SN - 0263-8223
VL - 316
JO - Composite Structures
JF - Composite Structures
M1 - 117013
ER -