Strength and Durability of Six Fast-Growing Timber Against Marine Biota as an Alternative to Hull Materials

Abstract

Ship hulls are vulnerable to attack by marine animals (barnacles and sea worms). The current scarcity of natural forest wood supplies has a negative impact on the fulfillment of good quality wood raw materials for wooden hull, especially types of Meranti batu (Shorea platyclados). The research aims to test the strength and durability of six fast-growing wood species as an alternative material for ship hulls.The method used is a laboratory test and field test.Flexural strength test based on SNI ISO 16978-2010, wood durability test based on SNI 01-7207-2006. The field test was carried out by submerging the specimens for six months in sea water, Kubu District, Rokan Hilir, Riau Province, Indonesia. Six types of wood tested were: Acacia (Acacia Mangium), Geronggang (Cratoxylon arborencens), Trembesi (Samanea saman), Eucalyptus (Eucalyptus), Mahang (Macaranga gigantea Mull.Arg), and Jabon (Anthocephalus cadamba (Miq)). Sea water immersion test results obtained that the wood Jabon, Acacia Mangium, Ekaliptus, and Geronggang not significantly different. The results of research on the flexural strength, Acacia Mangium wood and eucalyptus have strength equivalent to Meranti batu wood, so that it has the potential as an alternative material for hull material.

Research on the Mechanical Properties of Some New Aluminum Alloy Composite Structures in Construction Engineering

“…(2) Aluminum-wood composite columns: both aluminum and wood have the advantage of light self-weight. Wood has excellent load-bearing capacity, 18) but there are problems with insect infestation and corrosion, 19) which can be improved by using aluminum.…”

Potential of Local Fast-growing Wood for Alternative Hull Materials: Epoxy Bond Strength Test and its Durability

“…Some local wood species that are coated with epoxy resin are eligible for hull component materials. Resin coating can improve the physical, mechanical properties, and resistance of wood to attack by marine life and the influence of external weather (Fakhri et al, 2020).…”

“…Issue) : 2022 as one of the ship's raw materials will be affected by changes in weather, especially on the ship's hull. Resin coating can increase the strength and durability of wood (Fakhri, et al, 2020). Therefore, it is necessary to conduct further research on the bond strength of resin with wood as an alternative material for ship components.…”