PSI - Issue 72

Muh. Linggar Adi Wardhana et al. / Procedia Structural Integrity 72 (2025) 418–426

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Fig. 7. Observation of uncoated and coated Glulam specimens in fire (Zheng et al., 2024).

4. Densified Wood Dowels Filled Aluminum Tube (DWFAT) Densified Wood Dowels Filled with Aluminum Tubes (DWFAT) hold significant potential for application in ship structures, particularly in wooden shipbuilding. DWFAT in ship structure joints provides a viable alternative to steel dowels, offering the advantages of being lighter and more corrosion-resistant (Wouts et al., 2018; Neumann et al., 2011). Furthermore, DWFAT addresses the limitations of traditional wood dowels, which tend to lack ductility while reducing dependence on steel. Essential mechanical characteristics for wood joints include load-carrying capacity, stiffness, and ductility. Tests conducted on Densified Wood Dowels Filled with Aluminum Tubes (DWFAT) included a three-point bending test to evaluate the stiffness and bending strength of DWFAT compared to Densified Wood Dowels (DWD) and Slotted-in Aluminum Plate Timber Connection test. The experimental loading procedure was conducted in a three-point bending test according to the experimental set-up using a 500 kN MTS universal testing machine at a stroke rate of 5 mm/min. An LVDT transducer was mounted to record the mid-span deflection of the specimen as the load increased. The results of the three-point bending test are presented in Figure 8. These results indicate that DWFAT stakes outperform in the three-point bending test. The failure mode observed in DWFAT during bending tests was tensile cracks, which could be observed in the tensile zone of the specimen, as shown in Figure 9.

Fig. 8. The load-mid span deflection curves (Tétreault et al., 2023).

(a)

(b)

Fig. 9. (a) The primary failure mode of the densified wood dowel (DWD); (b) The primary failure mode of the densified wood dowel filled aluminum (DWFAT) (Tétreault et al., 2023).