Semarang – In an innovative move to support the shipbuilding industry in Indonesia, the latest technological breakthrough involves the use of coconut fiber as an eco-friendly material for constructing ship hulls. This initiative is spearheaded by Dr. Aulia Windyandari, a lecturer at the Vocational School and a staff member of the Shipbuilding Engineering Program at Universitas Diponegoro (Undip).
“I am conducting research to find alternative materials that can replace wood and fiberglass as the main components in ship hull construction,” Dr. Aulia stated. Through in-depth studies, field research, and extensive reference gathering, she is committed to discovering sustainable solutions for the industry.
The hybrid composite material of coconut fiber and fiberglass was selected due to its natural and renewable properties. This innovation is crucial for reducing wood consumption and addressing pollution caused by styrene in traditional wooden ship production.
The research encompasses an analysis of the physical and mechanical properties of the hybrid composite made from coconut fiber (coir/coco fiber) and fiberglass reinforced polymer (GFRP). Techniques such as alkali concentration, soaking duration, and drying methods are tested to enhance the tensile strength of coconut fiber.
Further testing is conducted to evaluate the mechanical strength of HCGFRP (Hybrid Coir Glass Fiber Reinforced Polymer) through tensile tests, bending tests, and Scanning Electron Microscopy (SEM) evaluation. A constitutive model for the material is also developed using the Avrami equation.
Additionally, structural analysis and collision assessments between ships and docks are performed to evaluate the strength and damage levels of HCGFRP hulls. The structural studies take into account conditions such as sagging, hogging, and still water, while collision analysis examines damage at impact speeds of 3, 4, and 5 knots.
The research findings indicate that HCGFRP can be used as a construction material for small vessels, offering new hope for a more environmentally friendly and sustainable shipbuilding industry. This innovation not only meets the need for alternative materials but also contributes to the preservation of natural resources, paving the way for a brighter future for Indonesia’s shipbuilding sector.
Source: suaramerdeka.com