Light-weight Optimum Design of Laminate Structures of a GFRP Fishing Vessel

Abstract

Approximately 90,000 ships are registered in South Korea, and about 80,000 of these ships are used in domestic shipping. Among these, 84% are small ships, such as a fishing vessels that weigh less than 20 tons and are made mostly of an FRP (Fiber Reinforced Plastics). When this fact is taken into account, the greenhouse gas emissions that are released per ton of a composite vessel are sizeable. In this study, the laminated structures of an FRP fishing vessel, many of which currently are being built in Korea, were analyzed by ISO (International Organization for Standardization) and international design rules, and the structures of the hulls are lightweight with optimum glass fiber mass content as determined by the laminate weight minimization algorithm. As a result, it was confirmed that the laminations of the vessels in accordance with the Korean rule could have 6.4% to approximately 11% more design margin compared to the requirements of ISO and other international rules. And the case study of the application of the laminate weight minimization algorithm showed the possibility of reducing the weight of the hull bottom plating by as much as about 19.32% and by as much as about 18.06% in the overall structure.

Effect of gelatin treatment on tow deformation in resin-impregnated glass fiber

“…Mei-Xian Li 1 , Yu Ren 1 , Dasom Lee 2 , MooSun Kim 3 & SungWoong Choi 4* The potential use of gelatin materials in the liquid composite molding manufacturing (LCM) process was investigated, with specific focus on the reinforcement deformation phenomenon. The adoptability of gelatin as a binder in a composite material with glass fiber for application in the LCM process was evaluated by analyzing the permeability and microscopic structure of the gelatincoated glass fiber.…”

“…The continuing demand for the practical implementation of high-performance fibers in structures has led to a continuing interest in high-strength fiber-reinforced composites. Composite materials such as glass-fiber and carbon-fiber-reinforced composites have been widely used for structures and outfitting in the shipping, aircraft, and automotive industries 1 , where analyzing the relationship between the design characteristics and structural performance is necessary to ensure the safety of structural designs [2][3][4] . Reinforcement deformation problems have attracted the attention of researchers in the area of composite manufacturing.…”

Error Analysis of Non-Destructive Ultrasonic Testing of Glass Fiber-Reinforced Polymer Hull Plates

“…In general, the thickness of GFRP ship structures ranges from 5 to 10 mm, and in the cases of special purpose ships such as naval vessels, it can range from 10 to 15 mm [16]. The hull plate thickness of a ship is typically approximately 10 mm [3,17], whereas the hull plate of a yacht with a length of 15 has a thickness of approximately 15 mm [18]. The parameters that influence the GFRP hull plate thickness include the ship design elements such as the ship structure size, ship speed, and its mechanical properties, depending on the material design conditions.…”

Tow Deformation Behaviors in Resin-Impregnated Glass Fibers under Different Flow Rates

“…With these trends, the use of fiber-reinforced composite (FRC) materials has increased in many areas such as structural applications, including rehabilitation and retrofitting, mainly because of their superior properties of high strength, corrosion resistance, and low weight [1,2]. Many researchers [3][4][5][6] have attempted to use FRC manufacturing process to fabricate especially for the complex designs. The materials for FRCs was consisted of use a resin, which can either thermosetting or thermoplastic, and a fibrous reinforcement, typified by glass fibers and carbon fibers.…”