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Communication Dans Un Congrès Année : 2023

Creep tests on partially dried notched beams of silver fir wood (Abies alba)

Résumé

Silver fir is an important species in the wood French industry but its application is facing drying issues. This paper presents the results of displacement-imposed bending tests and bending creep tests made on green or partially dried silver fir notched beams. The material consists in a batch of thirty beams that were characterised by measurements of basic density and longitudinal modulus of elasticity. The results suggest that the instantaneous strength is independent from the moisture content. During the creep tests, central deflection, crack parameters, shrinkage-swelling and meteorological parameters were measured. The time-dependent compliance is computed and takes into account crack propagation and multi-steps loading. The results show that the initial moisture content has an impact on the maximum time-dependent compliance reached but solar exposure and knots position are also significant parameters. The contribution of cracks to the deflection was also estimated and never exceeded 10% of the total deflection. Finally, observations showed that all crack trajectories were rising whatever the grain angle.
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Dates et versions

hal-04366360 , version 1 (28-12-2023)
hal-04366360 , version 2 (29-12-2023)

Identifiants

Citer

Bontemps Arthur, G Godi, Rostand Moutou Pitti, Eric Fournely, Joseph J. Gril. Creep tests on partially dried notched beams of silver fir wood (Abies alba). WCTE, Université de Oslo, Jun 2023, Oslo (Norway), Norway. pp.542-548, ⟨10.52202/069179-0074⟩. ⟨hal-04366360v2⟩
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