Impact of mechano-sorptive loading on crack propagation of notched beams of White fir and Okume - Laboratoire de Physique et Physiologie Intégratives de l'Arbre Fruitier et Forestier Accéder directement au contenu
Article Dans Une Revue Procedia Structural Integrity Année : 2022

Impact of mechano-sorptive loading on crack propagation of notched beams of White fir and Okume

Résumé

The paper presents the experimental results of the crack process induced by viscoelastic effect and mechanical loadings. The notched specimens are White fir and Okume with dimensions equal to 160x12x60mm and notch length of 20mm. These specimens were tested in 3-point bending for 5 days under an initial stress of 80% of the rupture stress. At the end of these 5 days, we applied a second stress corresponding to 100% of the rupture stress. These tests were carried out under a sorption cycle of 45-75% relative humidity and at a constant temperature of 20°C. Monitoring of the crack propagation was performed by using an USB microscope. The results show that the crack propagation is accentuated by the drying effects on the one hand and by the effects of the applied stress on the other hand. The results show that crack propagation is influenced by viscoelastic effects, and by mechano-sorptive effects as shown in Figure 1. The crack propagation is more important when mechano-sorptive effects occur, especially during the drying.
Fichier principal
Vignette du fichier
1-s2.0-S2452321622001202-main.pdf (2.09 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03591886 , version 1 (28-02-2022)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Martian Asseko Ella, Giacomo Goli, Samuel Ikogou, Joseph Gril, Eric Fournely, et al.. Impact of mechano-sorptive loading on crack propagation of notched beams of White fir and Okume. Procedia Structural Integrity, 2022, 37, pp.477-484. ⟨10.1016/j.prostr.2022.01.112⟩. ⟨hal-03591886⟩
44 Consultations
25 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More