WO2016111485A1

WO2016111485A1 - Composite panel for ship and manufacturing method therefor

Info

Publication number: WO2016111485A1
Application number: PCT/KR2015/014201
Authority: WO
Inventors: 이근호; 정훈희; 조영대; 박근형
Original assignee: 에스케이케미칼주식회사
Priority date: 2015-01-06
Filing date: 2015-12-23
Publication date: 2016-07-14
Also published as: CN107207076B; KR20160084684A; JP6700287B2; KR102213059B1; CN107207076A; JP2018502769A

Abstract

Disclosed are a composite panel for a ship, a plurality of which form the shape of a resistance reduction apparatus when coupled to a frame installed at the deck of a ship, and a manufacturing method therefor. The composite panel for a ship may comprise: a body part comprising a plate-shaped core, and a board formed of a fiber-reinforced composite and joined to the outer surface of the core; a fastening part which is formed on the outer side of the core along the circumference of the body part and is formed by stacking the board in plural piles; a ramp part which is formed between the body part and the fastening part, and comprises a slope which connects the outer surface of the body part and the outer surface of the fastening part; and at least one pin which is inserted into the body part in the thickness direction.

Description

Marine composite panel and manufacturing method

The present invention relates to a marine composite panel and a method of manufacturing the same.

In general, when a ship is sailing, the ship is subjected to air and wind resistance as well as water and wave resistance. In fact, air resistance can deteriorate the fuel economy of a ship, reduce the top speed of a ship, and act as a factor which reduces the ship's steering performance.

Particularly, in the case of a large container ship, a cargo ship, etc., the ship's shape of the main hull and cargo on the water surface is close to a rectangular parallelepiped, and the ship is exposed to a high position from the water surface, and thus the air, wind, and the ship are exposed to Because of the very high resistance of the green water to the player as it strikes, the player receives a lot of resistance. The installation of resistance reduction devices such as air spoilers and air deflectors in these athletes can lead to improved fuel economy due to aerodynamic design effects.

This marine resistance reduction device must have a great strength because it must withstand strong wind pressure and green water. In order to secure a great strength, in the prior art, a resistance reduction apparatus can be manufactured by processing and welding a metal. In this case, however, the fabrication is easy, but as the resistance reduction device becomes larger, the work efficiency is reduced and the weight is increased during installation, and the center of gravity is abnormally positioned, thereby reducing the efficiency of transportation.

In order to solve this problem, it is possible to form a resistance reduction device by connecting the unit panels made of a relatively light material. For example, a unit panel made of a fiber reinforced composite material can be used. However, in the case of the unit panel made of a composite material it is difficult to connect to each other by welding. In addition, even when using a method of bonding and connecting using an adhesive, it is difficult to surface-treat the adhesive surface and the adhesive force may be lowered due to foreign substances, so the reliability of the connection is not high.

In addition, the fiber-reinforced composite panel has a disadvantage that the strength in the thickness direction is weak. In particular, in the case of a panel formed of a sandwich structure, the strength required to configure the resistance reduction device may not be sufficiently exhibited in the thickness direction.

Embodiments of the present invention, in the composite unit panel that can constitute a resistance reduction device for ships, not only can be securely fastened to the frame structure, but also easy to install and transport, and a marine composite panel that can withstand high loads and It is to provide a method of manufacturing the same.

According to an aspect of the present invention, in the marine composite panel of which a plurality is coupled to the frame installed on the deck of the ship to form a resistance reduction device, consisting of a plate-shaped core, fiber-reinforced composite and bonded to the outer surface of the core Body portion including the plate is to be; A fastening part formed on an outer side of the core along a circumference of the body part, the fastening part formed by stacking a plurality of plate members; A lamp portion formed between the body portion and the fastening portion and including an inclined surface connecting the outer surface of the body portion and the outer surface of the fastening portion; And it may be provided with a marine composite panel comprising at least one pin inserted in the thickness direction in the body portion.

According to another aspect of the invention, the step of forming an inclined edge, the resin injection groove and the resin injection hole formed on at least one surface on the mold; Stacking a reinforcing fiber sheet on which an impregnated resin is cured to form a plate on an outer surface of the core; Inserting at least one pin into the laminated reinforcing fiber sheet and the core in a thickness direction; The resin is injected into the laminated reinforcing fiber sheet and the core, and the injected resin flows through the resin injection groove and the resin inlet to be impregnated into the reinforcing fiber sheet and the core; Thermally curing the resin; And at least one fastening hole is formed at an outer portion of the core of the plate.

Embodiments of the present invention can be easily and stably fastened to the frame structure, easy to install and transport, can withstand high loads, can provide a marine composite panel and a method of manufacturing the same that can ensure quality stability. . The use of the marine composite panel provided by the present embodiments facilitates the installation and maintenance of the vessel's resistance reduction device, and this resistance reduction device can effectively improve the fuel efficiency while effectively protecting the deck and bow parts from the green water. have.

1 illustrates a state in which a resistance reduction apparatus of a ship including a composite panel for ship according to an embodiment of the present invention is applied to a ship.

Figure 2 shows the frame and the marine composite panel of the resistance reduction device shown in FIG.

Figure 3 is a perspective view of a composite panel for ships according to an embodiment of the present invention.

4 is a cross-sectional view taken along the line AA ′ of the marine composite panel of FIG.

FIG. 5 is an enlarged view of the pin of FIG. 3.

6 is a perspective view of the core of FIG. 4.

7 is a cross-sectional view taken along the line BB ′ of the core of FIG. 6.

8 is a cross-sectional view illustrating a coupling form of the fastening part and the frame of FIG. 3.

9 is an exploded perspective view showing a coupling form of the ship composite panel and the frame of the present embodiment.

10 is an enlarged cross-sectional view of the fastening part and the lamp part of the composite panel for ships according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to the embodiment of the present invention. The following description is one of several aspects of the invention that can be claimed, and the following description may form part of the detailed description of the invention. However, in describing the present invention, a detailed description of known configurations or functions may be omitted to clarify the present invention.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. These terms are only used to distinguish one component from another. When a component is said to be 'connected' or 'connected' to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may exist in between Should be. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

1 is a view showing a state in which a resistance reduction apparatus of a ship including a composite panel for ships according to an embodiment of the present invention is applied to a vessel, and FIG. 2 illustrates a frame and a composite panel of a resistance reduction apparatus of FIG. 1. will be.

1 and 2, the resistance reduction device 10 may be disposed at the bow of the vessel 20. Here, the vessel 20 may be an extra large container vessel 20, but is not limited thereto. The resistance reduction apparatus 10 increases or decreases the fuel efficiency of the vessel 20 by preventing or reducing resistance caused by air, water (eg, green water) and wind during the voyage of the vessel 20, and the maximum speed of the vessel 20. The fall can be prevented or the steering performance of the vessel 20 can be improved.

In the present embodiment, the vessel resistance reduction apparatus 10 may include a frame 200 and a plurality of vessel composite panel 100.

Here, the frame 200 may constitute a frame of the resistance reduction device 10, it may be installed on the upper deck of the vessel 20 can be fixed to the hull (hull) of the vessel 20. For example, as shown in FIG. 2, the frame 200 may form a grid-like skeleton.

The composite panel 100 for ships may be coupled to the frame 200 to form the resistance reduction device 10 of the ship. For example, each marine composite panel 100 may function as the unit panel 100 and may be coupled to the frame 200 to close the space between the grid-shaped frame 200. A plurality of marine composite panel 100 is continuously arranged and coupled between the frame 200, thereby achieving the shape of the resistance reduction device 10 having a working principle such as an air spoiler, an air deflector.

In this case, the shape of the composite panel 100 for ships may include a circular as well as a polygon, such as a quadrangle, triangle, etc., having a contour of a curved surface. In addition, the composite panel 100 for ships may be made of a sandwich-structured plate using a composite material so as to effectively block the air, wind, water and the like at the same time having excellent light weight and strength. The marine composite panel 100 may be mechanically connected to or coupled to the frame 200 using fastening members 400 such as rivets and bolts.

Hereinafter, with reference to Figures 3 to 10 will be described the specific structure of the marine composite panel and the fastening structure of the frame.

3 is a perspective view showing a marine composite panel according to an embodiment of the present invention, Figure 4 is a cross-sectional view taken along the line A-A 'of the marine composite panel of FIG. FIG. 5 is an enlarged view of the pin of FIG. 3.

In the present embodiment, the marine composite panel 100 may be made of a sandwich-shaped plate including a core 110 and a plate 120 bonded to an outer surface of the core 110. Here, a pair of plate member 120 may be bonded to both sides of the core 110, the plate member 120 may be composed of a fiber-reinforced composite material. For example, the plate member 120 may be formed by thermosetting prepreg impregnated with a resin in the reinforcing fiber. In this case, the resin may be impregnated with the reinforcing fibers after the reinforcing fibers are laminated with the core 110, and may also be impregnated with the core 110 in some cases. As the resin is thermoset, the plate member 120 may be bonded to the core 110 by acting as an adhesive. When the resin is impregnated with the core 110 as well, as the resin is thermoset, the core 110 and the plate 120 may be firmly bonded together as an integral member.

3 and 4, specifically, the ship composite panel 100 includes a body portion 101, a fastening portion 103 formed around the body portion 101, and the body portion 101. And it may include a lamp unit 102 for connecting the fastening portion 103.

The body portion 101 may include a plate-shaped core 110 and a plate 120 bonded to the outer surface of the core 110, and the core 110 and the plate 120 may be formed flat. . In the body portion 101, a pair of plate members 120 may be bonded to both sides of the core 110, thereby forming a sandwich structure. As the body portion 101 forms a sandwich structure, the plate member 120 may secure light weight and high rigidity at the same time.

The fastening part 103 may be formed on the outer side of the core 110 along the circumference of the body part 101 and may be directly fastened to the frame 200. The fastening part 103 may be formed along at least a portion of the circumference of the body part 101. For example, the fastening part 103 may be formed only in a part of the circumference of the body part 101, or may be formed around the entire body part 101.

Here, the fastening part 103 may be formed of a laminate structure in which a plurality of plate members 120 are stacked without the core 110 and bonded to each other, unlike the body part 101. For example, when the plate member 120 is made of a prepreg impregnated with a resin in the reinforcing fiber, the fastening part 103 may be formed by laminating the prepreg in a plurality of layers and then bonding the resin with each other by thermosetting. have. The fastening part 103 may have a high mechanical strength as formed in a laminate structure, and may secure the mechanical strength required for mechanical fastening with the frame 200.

For mechanical fastening with the frame 200, the fastening part 103 may have one or more fastening holes 140 penetrating the fastening part 103 in a thickness direction. When a plurality of fastening holes 140 are formed, the fastening holes 140 may be arranged in a line so that their centers are located on the same line. Alternatively, the fastening holes 140 may be arranged in a plurality of rows. 3 illustrates an example in which a plurality of fastening holes 140 are arranged in a line. In addition, the fastening holes 140 may be formed to be spaced apart at uniform intervals throughout the fastening portion 103. When the fastening portion 103 is formed around the entire body portion 101, as shown in FIG. 3, the fastening holes 140 may also be spaced apart at predetermined intervals along the entire circumference of the body portion 101. have.

The fastening hole 140 of the fastening part 103 may be used for mechanical fastening of the ship composite panel 100 and the frame 200. For example, the ship composite panel 100 may be fixed to the frame 200 by being fastened with the frame 200 while the mechanical fastening member 400 such as bolts and rivets has passed through the fastening hole 140. Since the fastening hole 140 is formed in the fastening part 103 of the laminate structure, the fastening hole 140 may have a sufficient strength to maintain a mechanical fastening. The diameter of the fastening hole 140 or the distance between two adjacent fastening holes 140 may be determined according to the type of the mechanical fastening member 400 applied, the load applied by the mechanical fastening, and the like. For example, the diameter of the fastening hole 140 may be 30 mm, and the distance d between the centers of two adjacent fastening holes 140 may be 175 mm.

The lamp unit 102 is a portion connecting the body portion 101 and the fastening portion 103, and may include an inclined surface S connecting the surface of the body portion 101 and the surface of the fastening portion 103. . The fastening part 103 has a laminate structure in which only the plate member 120 is laminated without the core 110, whereas the body part 101 has a sandwich structure including the core 110 having a predetermined thickness, and thus the lamp part 102. The inclined surface S may be formed in a shape that is lowered toward the fastening portion 103 from the body portion 101.

The inclined surface S of the lamp unit 102 may be formed by the plate member 120 extending from the body portion 101 to the fastening portion 103. That is, a central portion, an edge portion, and a portion therebetween of one plate 120 may be included in the body portion 101, the fastening portion 103, and the lamp portion 102, respectively. The lamp unit 102 may also further include a core 110. In the lamp unit 102, at least one surface of the core 110 may be formed to be inclined at an angle corresponding to the inclined surface S, and the inclined portion of the core 110 may include the plate member 120 forming the inclined surface S. Can be bonded. According to an example, a central portion of one core 110 may form the body portion 101, and an edge thereof may be chamfered to form the lamp portion 102. Alternatively, a separate core 110 having the inclined surface S may be disposed on the side of the core 110 of the body portion 101 to form the lamp unit 102.

As described above, the lamp unit 102 may also be formed in a sandwich structure like the body portion 101. At this time, since the inclined core 110 and the plate 120 of the lamp unit 102 continuously connect the fastening unit 103 and the body unit 101 of the laminate structure, the panel 100 is the frame 200 The stress acting on the fastening part 103 when fastened to the lamp part 102 may be effectively transmitted to the body part 101 through the lamp part 102. Accordingly, stress concentration acting on the joints 103 and the joint portion of the body portion 101 when the load is applied is minimized, thereby reducing the risk of damage or damage to the panel 100.

In this embodiment, the core 110 is a foam foam made of polyurethane foam, polyvinyl chloride foam, polyester foam, vinyl ester foam, phenol foam, or a mixture thereof, such as aluminum honeycomb, nomex honeycomb, etc. It may be made of a member having a honeycomb structure.

Plate 120, as described above, may be made of a prepreg impregnated with a resin in the reinforcing fibers, but is not limited thereto. For example, the plate member 120 may be a multiaxial woven carbon fabric, a multiaxial woven glass fiber fabric, a carbon unidirectional prepreg, a glass fiber unidirectional prepreg, a carbon woven prepreg, a glass fiber woven prepreg, or a mixture thereof. Or the like.

The resin impregnated into the plate member 120 and the core 110 may use a thermosetting epoxy resin, a polyester resin, a vinyl ester resin, a phenol resin, a polyimide resin, or a mixture thereof. Such resins have excellent mechanical properties and are easy to control the molding time. In addition, the content range of the resin can be adjusted within the range of 35 to 45%. The content range of the resin may be changed depending on the size of the resin injection grooves 111 to 114 of the core 110, the size of the resin injection hole 115, and the like, and the resistance reduction apparatus to which the marine composite panel 100 is applied. It can be selected as an optimized value depending on the conditions of use or loading conditions. However, the content of the resin is not limited to the above-described range, and may have a value outside the above range as necessary.

Meanwhile, one or more pins 130 may be inserted into the body portion 101 in the thickness direction. For example, as shown in FIG. 4, a plurality of pins 130 may be inserted at uniform intervals throughout the body portion 101. The pin 130 may be inserted from any surface of the body portion 101 and may be inserted in a state in which the plate member 120 is stacked on the outer surface of the core 110. The inserted pin 130 may span the core 110 and the plate 120 at the same time so as to simultaneously fix the core 110 and the plate 120.

Referring to FIG. 5, the pin 130 may include a cylindrical rod 50 extending in one direction and a plurality of protrusions 51 protruding laterally on the outer circumferential surface of the rod 50. As shown in FIG. 5, one end of the rod 50 may be formed relatively sharp by chamfering an edge thereof, and may be inserted into the body portion 101 using the one end as a tip. The plurality of protrusions 51 may be spaced apart from each other at predetermined intervals over the entire circumference of the rod 50, and may be formed to be spaced apart at uniform intervals in the longitudinal direction. Here, the protrusion 51 may have an inclined shape so as to be higher from the tip side of the pin 130 so that the pin 130 may be smoothly inserted but the pin 130 may be prevented from falling out.

The material constituting the fin 130, the size of the fin 130, the number of the fin 130, the spacing between the fin 130, the arrangement form of the plurality of fin 130, and the like are used for the composite panel 100 for ships. It may be determined according to the type and physical properties of the core 110 and plate 120 to be. For example, the rod 50 of the pin 130 may have a diameter of 0.2 mm, and the distance between the centers of the cross sections of two adjacent pins 130 may be 40 mm. Here, the plurality of pins 130 may be spaced apart from each other at the interval in the horizontal and vertical direction of the body portion 101 plane. The length of the pin 130 may be equal to or smaller than the thickness of the body portion 101. Here, the thickness of the body portion 101 may be the length of the thickness of the core 110 and the thickness of the pair of plate member 120 combined. As an example, when the thickness of the body portion 101 is 33.36mm, the length of the pin 130 may be 33.30mm. In addition, the fin 130 may be made of steel, fiber reinforced composite material, or a polymer matrix.

By inserting one or more pins 130 into the body portion 101, the interlayer separation of the core 110 and the plate 120 in the sandwich structure can be reduced. In particular, when the resin is impregnated and thermally cured after the pin 130 is inserted, the bonding between the core 110 and the plate 120 may be maximized. Through this, the strength in the thickness direction of the body portion 101 can be improved by the strength in the in-plane direction, the ship composite panel 100 can support the load more effectively.

According to the present embodiment, the composite panel 100 for ships is basically formed in a sandwich structure to ensure lightweight, but can secure sufficient strength for mechanical fastening through the fastening portion 103 of the laminate structure. In addition, since the resin is impregnated with the plate 110 as well as the core 110 together with the thermosetting, the plate 120 and the core 110 are not only formed as a single member, but also in the thickness direction in the body portion 101. As the pin 130 is inserted to prevent the interlayer separation between the plate member 120 and the core 110, the pin 130 may have sufficient strength in the thickness direction despite the sandwich structure. Furthermore, mechanical fastening with the frame 200 may be easily implemented using the fastening part 103 having the fastening part 103. As a result, the assembly and installation of the resistance reduction apparatus of the ship becomes easy, and the cost can be reduced.

6 is a perspective view illustrating the core of FIG. 4, and FIG. 7 is a cross-sectional view taken along the line BB ′ of the core of FIG. 6.

6 and 7, the first resin injection groove 111, the second resin injection groove 112, and the third resin injection resin used in the resin injection into the core 110 included in the composite panel 100 for ships. The groove 113 and the fourth resin injection groove 114 may be formed. In addition, a resin injection hole 115 penetrating through the core 110 may be formed at an intersection point of the first and second resin injection grooves 112.

The first to fourth resin injection grooves 111 to 114 may be formed on at least one of an upper surface and a lower surface of the core 110. Here, the upper surface of the core 110 may refer to a surface having a relatively small area of the plane by the inclined surface (S). The first resin injection groove 111 may extend in one direction of the core 110, and the second resin injection groove 112 may extend perpendicular to the first resin injection groove 111. In the core 110, a series of first resin injection grooves 111 and a series of second resin injection grooves 112 may be formed, and they may form a grid-shaped groove on one surface of the core 110.

The third resin injection groove 113 passes through an intersection point of the first resin injection groove 111 and the second resin injection groove 112, and is tilted 45 ° clockwise with respect to the first resin injection groove 111. It may extend in the true direction. On the contrary, the fourth resin injection groove 114 passes through the intersection point and may extend in a 45 ° tilted direction counterclockwise with respect to the first resin injection groove 111. That is, at the intersection of one first and the second resin injection groove 112, the third resin injection groove 113 in the clockwise direction 45 °, 225 ° direction relative to the first resin injection groove 111 In addition, the fourth resin injection groove 114 may be formed in a 135 °, 315 ° direction in a clockwise direction with respect to the first resin injection groove 111. 6 illustrates an embodiment in which all of the first to fourth resin injection grooves 111 to 114 are formed, but is not limited thereto, and only a part of the first to fourth resin injection grooves 111 to 114 are formed. May be

As described above, by forming the first to fourth resin injection grooves 111 to 114 on at least one surface of the core 110, the flowability of the injected resin may be improved. After the resin is injected in a state in which the plate member 120 is laminated on the outer surface, the resin may be uniformly impregnated in the in-plane direction of the core 110 by flowing the resin along the resin injection grooves 111 to 114. Accordingly, the composite panel 100 for ships of a uniform shape in the in-plane direction can be produced.

Widths, depths, and intervals between adjacent resin injection grooves of the first to fourth resin injection grooves 111 to 114 may be determined according to the type or various physical properties of the resin to be injected. For example, an interval between two adjacent first resin injection grooves 111 and an interval between two adjacent second resin injection grooves 112 may be equally 23 mm. In addition, the depth of each resin injection groove may be 0.25mm.

Meanwhile, a resin injection hole 115 may be formed at an intersection point of the first resin injection groove 111 and the second resin injection groove 112. For example, as shown in FIG. 6, each of the plurality of resin injection holes 115 may be formed at each intersection of the first resin injection groove 111 and the second resin injection groove 112. The resin inlet 115 is formed to penetrate the core 110 in the thickness direction, and resin may be injected through one side of the resin inlet 115. The injected resin may flow in the in-plane direction of the core 110 along the first to fourth resin injection grooves 111 to 114, and may flow along the inner space of the resin injection hole 115 in the thickness direction of the core 110. have. Thereby, the flowability of resin with respect to the thickness direction of a panel can be improved. In addition, since the resin injection grooves 111 to 114 formed on the upper and lower surfaces of the core 110 are connected through the resin inlet 115, the resin may be injected into only one surface of the core 110. It can flow effectively to the opposite side of.

In this embodiment, as shown in Figure 7, the resin injection groove may be formed in a shape in which the diameter of one side and the diameter of the other side is different. That is, the resin injection groove may have the same shape as the top of the cone is cut out. For example, the upper diameter (a) of the resin injection groove may be 0.2mm, the lower diameter (b) may be 0.4mm. At this time, the resin can be injected into the resin inlet 115 from the side of the smaller size diameter is formed. In the above-described example, since the diameter of the resin inlet 115 is smaller at the top, the resin can be injected through the top of the resin inlet 115.

When the resin inlet 115 is formed like a truncated cone as in this embodiment, the flowability of the resin in the thickness direction of the core 110 may be adjusted. That is, when the resin passes through the resin inlet 115, the flowability of the resin may be improved as the diameter of the resin inlet 115 increases, and the resin is injected by increasing the diameter as it moves away from the portion where the resin begins to be injected. In this case, the resin can flow relatively slowly, and on the other side, the resin can flow faster. As a result, when the resin is injected through one side of the core 110, it is possible to reduce the difference in flowability of the resin on both sides of the core 110, and as a result, the resin is formed at the top and bottom of the core 110. The degree of impregnation can be made uniform.

8 is a cross-sectional view illustrating a coupling form of the fastening part and the frame of FIG. 3, and FIG. 9 is an exploded perspective view illustrating a coupling form of the ship composite panel and the frame of the present embodiment.

8 and 9, the fastening member 400 simultaneously passes through the fastening hole 140 formed in the fastening part 103 of the ship composite panel 100 and the fixing hole 210 formed in the frame 200. By being fixed in a state, the ship composite panel 100 may be mechanically fastened to the frame 200. When the plurality of fixing holes 210 are formed in the frame 200, the fixing holes 210 may be formed at positions corresponding to the plurality of fastening holes 140 of the fastening part 103. For example, the fixing holes 210 may be spaced apart at the same interval as the fastening holes 140 and formed in a straight line.

For stable mechanical fastening of the ship composite panel 100 and the frame 200, a washer may be provided on one side of the fastening part 103. Here, the washer may be formed in an annular shape or may be formed in a plate shape. 8 and 9 show an embodiment in which a plate washer 300 is provided. The washer may be provided between the fastening portion 103 and the frame 200 or may be provided on the opposite side of the frame 200 as shown in FIGS. 8 and 9. In addition, the washer may be formed of steel, carbon composites, glass fiber composites, Teflon and the like.

One or more through holes 310 may be formed in the plate-shaped washer 300. When the plurality of through holes 310 is formed, the through holes 310 may also be formed at positions corresponding to the fastening holes 140. Can be formed. That is, the through holes 310 may be spaced apart from the fastening holes 140 at the same interval and formed in a straight line. The plate washer 300 may be superimposed with the fastening part 103 when the marine composite panel 100 is coupled with the frame 200, and at this time, the fastening member 400 is fastening hole of the fastening part 103. 140, the fixing hole 210 of the frame 200, and the through hole 310 of the plate washer 300 may be simultaneously passed to the frame 200.

The washer distributes the fastening force applied by the fastening member 400 to prevent damage to the ship composite panel 100 or the frame 200, and further secures the mechanical fastening between the panel 100 and the frame 200. It can be done.

According to the present embodiment, the ship composite panel 101 may further include a reinforcing member 150 laminated with the plate member 120 of the fastening part 103. That is, the reinforcing material 150 may be further stacked on the plurality of plate members 120 forming the fastening portion 103. The reinforcement 150 may be extended to be laminated on the plate member 120 of the lamp unit 102 as well as the fastening unit 103. In the ramp portion 102, the reinforcement 150 may be provided between the plate 120 and the core 110. As the reinforcing material 150 is further laminated as described above, the fastening part 103 and the lamp part 102 may form a doubler laminate structure. In FIG. 10, an example in which the reinforcement 150 is inserted between the plate 120 and the plate 120 or between the plate 120 and the core 110 is illustrated, but the reinforcement 150 is further laminated on the outer surface of the outermost plate. May be

The reinforcement 150 may be made of the same material as the plate 120 or may be made of a different material. When made of different materials, the reinforcement 150 may be made of a material of higher strength than the plate 120. For example, the reinforcing material 150 may include a multi-axial fabric fiber, it may be firmly bonded to the plate member 120 and the core 110 by the resin is impregnated by thermosetting.

As the fastening part 103 and the lamp part 102 are formed in a doubler laminate structure by using the reinforcing material 150 as in this embodiment, the fastening part 103 and the lamp part 102 can be effectively reinforced. . Accordingly, when the ship composite panel 101 is fastened to the frame 200 using the fastening member 400, the fastening part 103 may be prevented from being damaged or damaged. In addition, the lamp unit 102 can effectively compensate for the weak point to the load by the inclined surface (S). In addition, by stacking the reinforcing material 150 over both the fastening part 103 and the lamp part 102, the fastening part 103 and the lamp part 102 are applied to the fastening part 103 locally. Can be prevented from being broken.

Hereinafter, an embodiment of the method of manufacturing the composite panel 100 described above will be described.

First, the reinforcing fiber sheet to form the plate member 120 and the core 110 may be stacked and positioned on the mold. The mold may include an upper mold and a lower mold which are coupled to each other to form an internal space of a shape of a molded article, such as the shape of the marine composite panel 100. Specifically, the laminated plate 120 and the core 110 may be provided on the lower mold. The inner surface of the mold may be released to facilitate the release of the cured panel 100 later. At this time, the release treatment may be performed using a release paper, a release cloth, a release agent, or the like. Also, in order to improve the flowability of the resin to be injected later, the mold can be heated and kept heated.

Here, the reinforcing fiber sheet disposed in the mold may be cut to a size of 5 to 10% larger than the size of the target panel 100. In addition, the core 110 may be formed with the first to fourth resin injection grooves 111 to 114 and the resin injection holes 115 as described above, and the edges of one side may be inclined. Alternatively, after the core 110 having the first to fourth resin injection grooves 111 to 114 and the resin injection holes 115 are disposed, the core 110 having the inclined surface S may be disposed on the side surface thereof. have.

In a state where the reinforcing fiber sheet and the core 110 to form the plate 120 are stacked, a reinforcing material 150 having a predetermined width may be further stacked along the edge if necessary. As the reinforcing material 150 is stacked, the fastening part 103 and the lamp part 102 may be formed in a doubler laminate structure in the finished panel 100.

In addition, when the reinforcing fiber sheet and the core 110 are stacked, it is possible to insert the pin 130 in the thickness direction in the area corresponding to the body portion 101. Here, the pin 130 may be inserted at a different position from where the resin injection hole of the core 110 is formed.

Laminating the reinforcing fiber sheet, the core 110 and the reinforcing material 150 to form the plate 120 as described above and insert the pin 130, while mixing the main and the curing agent in proportion using a two-component epoxy resin After degassing, the resin to be impregnated into the reinforcing fiber sheet and the core 110 may be prepared.

After inserting the pins 130, the backing film is covered with a vacuum on the laminated structure of the reinforcing fiber sheet and the core 110, and the resin may be injected. Here, the resin may be injected through a plurality of resin injection channels, and each of the plurality of channels may be positioned above the resin injection hole of the core 110. When the resin flows along the resin injection hole and the first to fourth resin injection grooves 111 to 114 and is sufficiently impregnated into the entire core 110 and the reinforcing fiber sheet, the remaining resin may be impregnated through a separately formed resin discharge channel. Can be.

Once the resin begins to exit through the resin discharge channel, the mold may be heated to thermoset the resin. When curing is completed, the cured panel 100 is released from the mold, the end of the fastening part 103 is cut to fit the desired size of the panel 100 to proceed with trimming, and a fastening hole (in the fastening part 103). 140).

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. For example, those skilled in the art can change the material, size, etc. of each component according to the application field, or combine or replace the embodiments in a form that is not clearly disclosed in the embodiments of the present invention, this is also the present invention It will not go beyond the scope of the. Therefore, the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and such modified embodiments should be included in the technical spirit described in the claims of the present invention.

Claims

In the composite panel for ships in which a plurality of frames are coupled to the frame installed on the deck of the ship to form the resistance reduction device,

A body portion comprising a plate-shaped core and a plate material made of a fiber-reinforced composite and bonded to an outer surface of the core;

A fastening part formed on an outer side of the core along a circumference of the body part, the fastening part formed by stacking a plurality of plate members;

A lamp portion formed between the body portion and the fastening portion and including an inclined surface connecting the outer surface of the body portion and the outer surface of the fastening portion; And

Marine composite panel comprising one or more pins inserted into the body portion in the thickness direction.
The method of claim 1,

The composite panel for ships is formed on the outer surface of the core is a series of first resin injection grooves recessed in a predetermined depth and extending in one direction, and a series of second resin injection grooves extending in a direction perpendicular to the first resin injection groove.
The method of claim 2,

On the outer surface of the core and the third resin injection groove extending in the direction inclined 45 ° clockwise with respect to the first resin injection groove while passing through the intersection of the first resin injection groove and the second resin injection groove, A composite panel for ships further comprising a fourth resin injection groove extending in an inclined direction by 45 ° counterclockwise with respect to the first resin injection groove while passing through an intersection point.
The method of claim 2,

The composite panel for ships having a depth of each of the first resin injection groove and the second resin injection groove is 0.25mm.
The method of claim 2,

The distance between the two first resin injection groove and the distance between the two second resin injection groove is 23mm each composite panel.
The method of claim 2,

The core composite panel for ships formed with a resin injection hole penetrating the core at a position where the first resin injection groove and the second resin injection groove cross the core.
The method of claim 6,

The resin inlet diameter is formed in a different size on one side and the other side,

A composite panel for ships in which resin is injected into the resin inlet from the side on which a smaller diameter is formed.
The method of claim 7, wherein

The diameter of the one side of the resin inlet is 0.2mm, the diameter of the other side is 0.4mm composite panel.
The method of claim 1,

The pin,

A rod extending in one direction,

Ship composite panel comprising a plurality of protrusions protruding on the outer peripheral surface of the rod.
The method of claim 1,

The at least one pin is a composite panel for ships are inserted spaced apart from each other at intervals of 40mm.
The method of claim 1,

The fastening part includes at least one fastening hole formed in the thickness direction,

The marine composite panel is a marine composite panel coupled to the frame by the fastening member is fastened to the frame through the fastening hole.
The method of claim 1,

And at least one through hole formed at the same interval as the at least one fastening hole, wherein the ship composite panel is coupled to the frame such that the fastening member can pass through the through hole and the fastening hole to be fastened to the frame. Marine composite panel further comprises a plate-type washer that can be overlapped with the fastening.
The method of claim 1,

The composite panel for ship further comprising a reinforcing material laminated on the plate of the fastening portion and the plate of the lamp unit.
The method of claim 13,

The reinforcing material is a marine composite panel comprising a multi-axial fiber fabric.
The method of claim 1,

The core and the plate material is a marine composite panel bonded to each other by the resin impregnated in the plate material is impregnated together in the core and cured.
Forming an inclined edge and having a resin injection groove and a resin injection hole formed on at least one surface thereof on a mold;

Stacking a reinforcing fiber sheet on which an impregnated resin is cured to form a plate on an outer surface of the core;

Inserting at least one pin into the laminated reinforcing fiber sheet and the core in a thickness direction;

The resin is injected into the laminated reinforcing fiber sheet and the core, and the injected resin flows through the resin injection groove and the resin inlet to be impregnated into the reinforcing fiber sheet and the core;

Thermally curing the resin; And

Method of manufacturing a composite panel for ships comprising the step of forming one or more fastening holes in the outer portion of the core of the plate.