Mode I fracture energy release rates of European beech wood-adhesive bonds

Sammanfattning

This paper presents mode-I fracture energy release rates (G(I)) of European beech wood (Fagus sylvatica) adhesive bonds for three common types of adhesives pressed with two levels of pressure and glued with three spread rates. Flat double cantilever beam tests with a shear corrected compliance method were used to derive G(I). A high pressing pressure of 1.0 versus 0.1 MPa resulted in higher G(I)-values for phenol resorcinol formaldehyde and melamine urea formaldehyde adhesive systems (not significant), but did not affect the polyvinyl acetate system. A low adhesive spread rate of 50 g m(-2) clearly resulted in lower G(I)-values for all three systems, while no clear differences were found between spread rates of 100-200 g m(-2) for the formaldehyde systems. The herein presented G(I)-values of beech adhesive bonds can be used to further evaluate the suitability of beech in glued load-bearing timber structures and promote optimising beech wood-adhesive systems for high G(I).

Nyckelord

Shear corrected compliance method; Fagus sylvatica; flat double cantilever beam (DCB) test

Publicerad i

Wood Material Science and Engineering
2024
Utgivare: TAYLOR & FRANCIS LTD

SLU författare

• Van Blokland, Joran

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Trävetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1080/17480272.2024.2390587

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/131912