Test plate and impact damage evaluation device

Abstract

The invention discloses a test panel and an impact damage assessment device, the test panel comprises a base plate and a composite material plate, the composite material plate is arranged on the front surface of the base plate, the test panel further comprises a reinforcing plate and a reinforcing sheet, the reinforcing plate is located on the front surface of the composite material plate, and the reinforcing sheet is located between the reinforcing plate and the composite material plate; the base plate, the composite material plate, the reinforcing sheet and the reinforcing plate are connected through bolts. According to the scheme, the reinforcing plate is used for replacing the composite material plate to bear the pressing force of the bolt head so as to reduce damage to the composite material plate, the strength of the reinforcing plate is larger than that of the composite material plate, larger pressing force can be applied to the reinforcing plate, and then the pressing force acting on the composite material plate is increased; the firmness and stability of connection between the composite material plate and the substrate are improved, and the risks of torsional deformation of the composite material plate and layering of the edge and the substrate are reduced; meanwhile, fretting wear between the bolt and the mounting hole of the composite material plate can be reduced through the reinforcing sheet, and abnormal damage caused by expansion of the mounting hole is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of composite material testing, and in particular to a test plate and an impact damage assessment device. Background Art

[0002] Resin-based composite materials are limited reinforcement materials with organic polymers as the body. They have the advantages of good molding processability, high specific strength, high specific modulus, fatigue resistance and corrosion resistance.

[0003] In the marine environment, the hull structure, propulsion device, mast, etc. will be subject to the corrosion of seawater and the wear of broken ice. Arranging resin-based composite materials on the surface of the hull structure, propulsion device, mast, etc. can protect the hull structure, propulsion device, mast, etc.

[0004] The damage test of resin-based composite materials is generally to fix the resin-based composite materials on a substrate, and the test panel composed of the resin-based composite materials and the substrate moves in an ice water pool to simulate the movement of the hull structure, propulsion device and mast in the marine environment.

[0005] During the test, the test plate was subjected to the friction between seawater and crushed ice, as well as the collision with crushed ice, and the resin-based composite material suffered abnormal damage such as torsional deformation, delamination of the edge and the substrate, falling pieces, and enlargement of the mounting holes, which affected the reliability of the damage test of the resin-based composite material in the marine environment. Summary of the invention

[0006] The present application proposes a test plate to improve the reliability of damage testing of resin-based composite materials in marine environments. The present solution also provides an impact damage assessment device having the test plate.

[0007] In order to achieve the above-mentioned object, the present application provides a test plate, comprising a substrate and a composite material plate, wherein the substrate and the composite material plate are stacked and arranged, and at least two oppositely arranged edges of the composite material plate have mounting holes for connecting the substrate and the composite material plate.

[0008] It also includes a reinforcing plate and a reinforcing sheet, wherein the reinforcing plate is located on the front side of the composite material plate and corresponds to the edge of the composite material plate where the mounting hole is opened, and is used to enhance the strength of the edge.

[0009] The reinforcing sheet is located between the reinforcing plate and the composite material plate and is fixedly connected to the composite material plate, so as to reduce the micro-motion wear between the bolt and the mounting hole.

[0010] Preferably, in the above test plate, the reinforcing plate is a long strip plate, and the reinforcing plate has at least two first mounting holes cooperating with the bolts in its length direction; and / or,

[0011] The shape formed by the plurality of reinforcing plates is the same as the outer peripheral shape of the composite material plate.

[0012] Preferably, in the above test plate, the reinforcing sheet is adhesively connected to the composite material plate.

[0013] Preferably, in the above test plate, the reinforcing sheet and the composite material plate are made of the same or different materials.

[0014] Preferably, in the above test plate, the reinforcing plate is a metal plate; and / or,

[0015] The back side of the composite material plate has the reinforcing plate.

[0016] Preferably, in the above test plate, the base plate and the ship are made of the same material.

[0017] Preferably, in the above test plate, the length of the base plate is greater than the length of the composite material plate, and the width of the base plate is greater than the width of the composite material plate.

[0018] An impact damage assessment device comprises an ice water pool, a ship and a test plate, wherein the test plate is connected to the ship so that the ship drives the test plate to move in the ice water pool.

[0019] The test plate is the test plate described in any one of the above solutions, and the composite material plate of the test plate is located on the side of the base plate of the test plate away from the ship;

[0020] Also includes:

[0021] A first temperature sensor, used to measure the temperature of the ice-water mixture in the ice-water pool;

[0022] A second temperature sensor is used to measure the temperature of the back side of the test plate, where the back side of the test plate is a side of the test plate close to the ship;

[0023] A pressure sensor, used to measure the force exerted by the water and crushed ice in the ice water pool on the test plate;

[0024] The strain sensor is used to measure the strain of the test plate.

[0025] Preferably, in the above-mentioned impact damage assessment device, the base plate of the test plate has a hanging hole, and the base plate is connected to the anchor of the ship through the hanging hole.

[0026] Preferably, in the above-mentioned impact damage assessment device, the second temperature sensor, the pressure sensor and the strain sensor are mounted on a reinforcing plate of the test plate;

[0027] and / or,

[0028] The second temperature sensor is located on the back side of the test board.

[0029] The test plate provided in the embodiment of the present application includes a substrate and a composite material plate, the substrate and the composite material plate are stacked, and the composite material plate is arranged on the front of the substrate. The test plate disclosed in this scheme also includes a reinforcing plate and a reinforcing sheet, the reinforcing plate is located on the front of the composite material plate, the reinforcing sheet is located between the reinforcing plate and the composite material plate, and the substrate, the composite material plate, the reinforcing sheet and the reinforcing plate are connected by bolts. In this scheme, the reinforcing plate replaces the composite material plate to bear the pressing force of the bolt head, on the one hand, the damage to the composite material plate is reduced, on the other hand, the risk of the composite material plate falling off under the friction between seawater and crushed ice and the collision with crushed ice is reduced, on the other hand, the strength of the reinforcing plate is greater than the strength of the composite material plate, and a greater pressing force can be applied to the reinforcing plate, thereby increasing the pressing force acting on the composite material plate, improving the firmness and stability of the connection between the composite material plate and the substrate, reducing the risk of torsional deformation and delamination of the edge and the substrate under the friction between seawater and crushed ice and the collision with crushed ice, so as to improve the reliability of the damage test of the resin-based composite material under the marine environment; at the same time, the reinforcing sheet can reduce the micro-wear between the bolt and the mounting hole of the composite material plate, and reduce the generation of abnormal damage caused by the expansion of the mounting hole, so as to further improve the reliability of the damage test of the resin-based composite material under the marine environment.

[0030] The present solution also discloses an impact damage assessment device, including an ice water pool, a ship and a test plate, wherein the test plate is connected to the ship, and the ship can move in the ice water pool to drive the test plate to move in the ice water pool. The test plate is the test plate described in any of the above solutions. Since the test plate has the above technical effects, the impact damage assessment device having the test plate also has the same technical effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present application can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0032] Figure 1 is a schematic diagram of the structure of the impact damage assessment device of the present application;

[0033] Figure 2 It is a schematic diagram of the structure of the connection between the test board and the data collector of the present application;

[0034] Figure 3 It is a schematic diagram of the structure of the test board of this application;

[0035] Figure 4 is a side view of the test panel of the present application;

[0036] Figure 5 It is a schematic diagram of the structure of the reinforcing sheet of the test plate of the present application;

[0037] Figure 6 It is a schematic diagram of the front structure of the base plate and the composite material plate of the test plate of the present application;

[0038] Figure 7 It is a schematic diagram of the back structure of the substrate and the composite material board of the test board of the present application.

[0039] The accompanying drawings are as follows:

[0040] 1-base plate; 11-hanging hole; 2-composite material plate; 3-reinforcement plate; 4-reinforcement sheet; 5-ice water pool; 6-ship. DETAILED DESCRIPTION

[0041] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are only used to explain the related application, rather than to limit the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0042] It should be noted that, for ease of description, only the parts related to the relevant applications are shown in the accompanying drawings. In the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0043] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0044] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0045] See also Figure 1-Figure 7 .

[0046] Some embodiments of the present application disclose a test panel, comprising a substrate 1 and a composite material panel 2, wherein the substrate 1 and the composite material panel 2 are stacked, the composite material panel 2 is disposed on the front side of the substrate 1, and the composite material panel 2 is not disposed on the back side of the substrate 1, the back side of the substrate 1 does not collide with seawater and crushed ice when the test panel is subjected to a damage test, and the composite material panel 2 collides with seawater and crushed ice when the test panel is subjected to a damage test.

[0047] The composite material plate 2 is connected to the base plate 1 by bolts. The composite material plate 2 can be a resin-based composite material plate 2.

[0048] The test plate disclosed in this scheme also includes a reinforcing plate 3 and a reinforcing sheet 4. The reinforcing plate 3 is located on the front side of the composite material plate 2, and the reinforcing sheet 4 is located between the reinforcing plate 3 and the composite material plate 2. The reinforcing sheet 4 and the composite material plate 2 are rigidly matched, and the base plate 1, the composite material plate 2, the reinforcing sheet 4 and the reinforcing plate 3 are connected by bolts.

[0049] The front side of the composite material plate 2 is the side of the composite material plate 2 that collides with seawater and crushed ice when the test plate is subjected to damage testing.

[0050] At least two relatively arranged edges of the composite material plate 2 have mounting holes for connecting the composite material plate 2 to the substrate 1. A reinforcing plate 3 is provided on the edge of the composite material plate 2 having the above-mentioned mounting holes. The plane where the reinforcing plate 3 is located is parallel to the plane where the composite material plate 2 is located, and is used to enhance the strength of the above-mentioned edge of the composite material plate 2 to prevent abnormal damage such as breaking in the middle of the composite material plate 2 during the damage test.

[0051] When the base plate 1 , the composite material plate 2 , the reinforcing sheet 4 and the reinforcing plate 3 are connected by bolts, the pressing force of the bolt head of the bolt is transmitted to the composite material plate 2 through the reinforcing plate 3 , so that the composite material plate 2 is pressed against the base plate 1 . In this scheme, the reinforcing plate 3 is used instead of the composite material plate 2 to bear the compression force of the bolt head. On the one hand, the damage to the composite material plate 2 can be reduced, thereby ensuring the strength of the composite material plate 2. On the other hand, the area of ​​the reinforcing plate 3 is larger than the area of ​​the bolt head, and the compression force applied by the bolt head can be dispersed through the reinforcing plate 3 to reduce the influence of stress concentration on the strength of the composite material plate 2. At the same time, the area of ​​the composite material plate 2 acting on the compression force is increased, thereby reducing the risk of the composite material plate 2 falling off due to the friction between seawater and crushed ice and the collision with the crushed ice. On the other hand, the strength of the reinforcing plate 3 is greater than that of the composite material plate 2, and a greater compression force can be applied to the reinforcing plate 3, thereby increasing the compression force acting on the composite material plate 2, improving the firmness and stability of the connection between the composite material plate 2 and the substrate 1, reducing the risk of torsional deformation of the composite material plate 2 and delamination of the edge and the substrate 1 due to the friction between seawater and crushed ice and the collision with the crushed ice, thereby improving the reliability of damage testing of resin-based composite materials in marine environments.

[0052] The area of ​​the reinforcing plate 3 is greater than the area of ​​the bolt head by the projection area of ​​the reinforcing plate 3 on the base plate 1 and the projection area of ​​the bolt head on the base plate 1 in a direction perpendicular to the plane where the base plate 1 is located.

[0053] The reinforcing sheet 4 is located between the composite material plate 2 and the reinforcing sheet 3, and is used to reduce the shaking between the bolt and the composite material plate 2. Specifically, the reinforcing plate 3, the reinforcing sheet 4, the composite material plate 2 and the base plate 1 are respectively provided with a first mounting hole, a second mounting hole, a third mounting hole and a fourth mounting hole that match the bolt, wherein the third mounting hole of the reinforcing sheet 4 is interference-fitted with the bolt, the first mounting hole, the second mounting hole and the fourth mounting hole are clearance-fitted with the bolt, and the third mounting hole limits the bolt along its own circumferential direction, so as to reduce the micro-wear between the bolt and the mounting hole of the composite material plate 2, and reduce the occurrence of abnormal damage caused by the expansion of the mounting hole, so as to further improve the reliability of the damage test of the resin-based composite material under the marine environment.

[0054] From the front side of the substrate 1 to the back side of the substrate 1 , the test panel includes a reinforcing plate 3 , a reinforcing sheet 4 , a composite material plate 2 and the substrate 1 in sequence.

[0055] The reinforcing plate 3 is a long strip plate, and the reinforcing plate 3 has first mounting holes for matching with bolts at least at both ends in the length direction of the reinforcing plate 3. Specifically, the first mounting holes can be set only at both ends in the length direction of the reinforcing plate 3, or in the middle of the length direction of the reinforcing plate 3. Optionally, the lengths of the sides of the reinforcing plate 3 and the composite material plate 2 where the first mounting holes are set are equal.

[0056] In an embodiment where the composite material plate 2 is a rectangular plate, the composite material plate 2 has four edges, at least two oppositely arranged edges of the composite material plate 2 have mounting holes, the number of reinforcing plates 3 is at least two and respectively corresponds to the positions of the edges of the composite material plate 2 having mounting holes, the number of reinforcing sheets 4 is equal to the number of reinforcing plates 3, and the area of ​​the reinforcing plates 3 is less than or equal to the area of ​​the reinforcing plates 3.

[0057] The reinforcing plate 3 may also be an annular plate structure having the same peripheral shape as the composite material plate 2 , and the reinforcing sheet 4 may also be an annular plate structure having the same shape as the composite material plate 2 .

[0058] In some embodiments, the composite material plate 2 is a rectangular plate, the upper and lower parts of the composite material plate 2 are longer and the strength is relatively weak, and only a third mounting hole for connecting the composite material plate 2 with the substrate 1 can be set above and below the composite material plate 2, and the composite material plate 2 only has reinforcing plates 3 and reinforcing sheets 4 set above and below.

[0059] In other embodiments, the composite material plate 2 is a rectangular plate, the four sides of the composite material plate 2 have third mounting holes, and reinforcing plates 3 and reinforcing sheets 4 are arranged on the top, bottom, left and right of the composite material plate 2.

[0060] In some embodiments, two first mounting holes share one reinforcing plate 3, which, on the one hand, reduces the number of reinforcing plates 3 provided, and on the other hand, ensures the effective area between the reinforcing plate 3 and the composite material plate 2, and the portion between two adjacent first mounting holes can also be pressed by the reinforcing plate 3.

[0061] In some embodiments, a reinforcing plate 3 may be provided only at the position where the substrate 1 has the fourth mounting hole, that is, one fourth mounting hole corresponds to one reinforcing plate 3, and only one first mounting hole is provided on the reinforcing plate 3, and the reinforcing plate 3 only reinforces the structure around the fourth mounting hole.

[0062] In the embodiment where the shape formed by the plurality of reinforcing plates 3 is the same as the outer peripheral shape of the composite material plate 2 , the strength of each position of the composite material plate 2 can be enhanced, thereby reducing the risk of delamination, falling and breaking at the edge of the composite material plate 2 .

[0063] In this solution, the reinforcing sheet 4 is fixedly connected to the composite material plate 2 to prevent the reinforcing sheet 4 and the composite material plate 2 from moving relative to each other during the damage test of the test plate. It should be noted that before assembling the reinforcing plate 3, the reinforcing sheet 4, the composite material plate 2 and the base plate 1, the reinforcing sheet 4 is first fixedly connected to the composite material plate 2, and then the reinforcing plate 3, the reinforcing sheet 4 and the composite material plate 2 are bolted together as a whole and the base plate 1.

[0064] In some embodiments, the reinforcing sheet 4 is connected to the composite material plate 2 by bonding or welding.

[0065] The reinforcing sheet 4 and the composite material plate 2 may be made of the same material or different materials. In the embodiment where the reinforcing sheet 4 and the composite material plate 2 are made of the same material, the reinforcing sheet 4 and the composite material plate 2 may be connected by bonding or ultrasonic welding. In the embodiment where the reinforcing sheet 4 and the composite material plate 2 are made of the same material, the reinforcing sheet 4 and the composite material plate 2 are connected by bonding.

[0066] In the embodiment where the reinforcing sheet 4 and the composite material plate 2 are made of different materials, the reinforcing sheet 4 may be made of metal material or other composite materials.

[0067] The strength of the reinforcing plate 3 is greater than that of the composite material plate 2. After the reinforcing plate 3 is connected to the periphery of the composite material plate 2, the reinforcing plate 3 enhances the peripheral strength of the composite material plate 2, but has no effect on the strength of the portion of the composite material plate 2 located in the space enclosed by multiple reinforcing plates 3.

[0068] The hardness of the reinforcing sheet 4 is lower than that of the composite material plate 2 , and the reinforcing sheet 4 can also play a buffering role to prevent the composite material plate 2 from being damaged.

[0069] In some embodiments, the reinforcing plate 3 is a metal plate, for example, the reinforcing plate 3 is a stainless steel plate, a copper plate, an aluminum alloy plate, or a titanium alloy plate.

[0070] In some embodiments, the reinforcing plate 3 may also be a non-metallic plate, for example, the reinforcing plate 3 is a plastic plate, a ceramic plate, or a wooden plate.

[0071] In some embodiments, the back of the composite material plate 2 also has a reinforcing plate 3, that is, the composite material plate 2 is sandwiched between two reinforcing plates 3, and the reinforcing plate 3 located on the back of the composite material plate 2 is used to protect the back of the composite material plate 2. In this embodiment, from the front side of the substrate 1 to the back side of the substrate 1, the test plate includes the reinforcing plate 3, the reinforcing sheet 4, the composite material plate 2, the reinforcing sheet 4, the reinforcing plate 3 and the metal plate in sequence.

[0072] The material of the base plate 1 may be the same as the material of the ship, the ship propeller or the ship mast.

[0073] When the test plate is subjected to damage testing, the test plate needs to be fixed on the ship 6 so that the test plate moves with the ship 6 in the test environment.

[0074] In order to prevent the test plate from damaging the composite plate 2 when connected to the ship 6 , the area of ​​the base plate 1 is larger than that of the composite plate 2 , and the portion of the base plate 1 not covered by the composite plate 2 is connected to the ship 6 .

[0075] In some embodiments, the substrate 1 is a rectangular plate, and the shape of the composite material plate 2 may be the same as or different from the shape of the substrate 1 .

[0076] In an embodiment in which the substrate 1 and the composite material plate 2 have the same shape, the substrate 1 and the composite material plate 2 are both rectangular plates, the length of the substrate 1 is greater than the length of the composite material plate 2, and the width of the substrate 1 is greater than the width of the composite material plate 2, so as to ensure that the projection of the composite material plate 2 along the direction perpendicular to the plane where the substrate 1 is located falls completely on the substrate 1.

[0077] The portion of the base plate 1 not covered by the composite material plate 2 is connected to the ship 6 .

[0078] The present solution also discloses an impact damage assessment device, comprising an ice water pool 5, a ship 6 and a test plate, wherein the test plate is connected to the ship 6, and the ship 6 can move in the ice water pool 5 to drive the test plate to move in the ice water pool 5.

[0079] The test plate is the test plate recorded in any of the above schemes. Since the test plate has the above technical effects, the impact damage assessment device having the test plate also has the same technical effects, which will not be repeated here.

[0080] The ice pool 5 can be a pool structure simulating an ocean environment, or a real ocean. When the ice pool 5 is a pool structure simulating an ocean environment, the ship 6 is a simulated ship hull, and when the ice pool 5 is a real ocean, the ship 6 can be a ship or a shipboard.

[0081] In the embodiment where the vessel 6 is a ship, an anchor of the vessel 6 is connected to the test plate.

[0082] The impact damage assessment device disclosed in the present scheme also includes a first temperature sensor, a second temperature sensor, a pressure sensor and a strain sensor, wherein the first temperature sensor is used to measure the temperature of the ice-water mixture in the ice-water pool 5, the second temperature sensor is used to measure the temperature of the back of the test plate to obtain the low-temperature thermal effect on the test plate, the pressure sensor is used to measure the force exerted on the test plate by the water and crushed ice in the ice-water pool 5, and to determine the flow rate and pressure load of the ice-water mixture, and the strain sensor is used to measure the strain caused by the impact deformation of the test plate, wherein the back of the test plate is the side of the test plate close to the ship 6.

[0083] The first temperature sensor, the second temperature sensor, the pressure sensor and the pressure-variable sensor are communicatively connected with the data acquisition system, and can accurately obtain the damage changes of the composite material plate 2 with different times, different sea ice levels, and different energy sea ice impact and wear, and realize dynamic monitoring of the stress and deformation of the test plate during the impact damage test.

[0084] The impact damage assessment device disclosed in the present invention has a simple structure, stable and reliable operation, and has a good control effect on temperature and impact.

[0085] This scheme provides an effective test method for revealing the damage mode and failure mechanism of resin-based composite materials in an ice-water mixed scouring environment, and provides a reliable technical means for the service environment assessment of composite components such as ships in marine environments, which has very important application value.

[0086] During operation, the boat 6 is located in the ice water pool 5, the test plate is connected to the boat 6, and the boat 6 drives the test plate to contact the ice water mixture. The boat 6 is started to run at a certain speed to perform an impact damage test on the test plate. After the specified time is reached, the operation of the boat 6 is stopped, the data acquisition system is turned off, and the test plate is taken out for morphological observation, physical and chemical analysis, and mechanical property testing to analyze the degree of damage.

[0087] The ice water pool is used to provide the test plate with low temperature and collision conditions of the marine environment, can accommodate the ship 6, and has a fragile floating ice area and a free ice edge area.

[0088] The test plate is connected to the ship 6 through the hanging hole 11. Specifically, the hanging hole 11 is set on the base plate 1. Preferably, a plurality of hanging holes 11 are dispersed on the test plate. Optionally, the hanging holes 11 are evenly distributed along the circumference of the test plate to fix the test plate at four positions, namely, up, down, left, and right. On the one hand, it ensures that multiple positions of the test plate are connected to the ship 6, improving the stability of the test plate fixed on the ship 6. On the other hand, it disperses the load to ensure that the test plate is evenly stressed. The more the number of hanging holes 11, the smaller the load borne by a single hole, avoiding stress concentration.

[0089] Specifically, the base plate and the reinforcing plate are both provided with hanging holes 11 , while the reinforcing plates located on the left and right sides of the base plate do not have hanging holes 11 .

[0090] A steel wire rope is arranged in the hanging hole 11 , and the base plate 1 is fixedly connected to the anchor of the ship 6 via the steel wire rope to ensure that the test plate moves synchronously with the ship 6 and prevent the test plate from swinging when moving with the ship 6 .

[0091] The connection between the test plate and the ship 6 is not limited to being fixed by steel wire ropes, but may also be welded, bolted, riveted or connected in other ways.

[0092] In some embodiments, the second temperature sensor, pressure sensor and strain sensor can be installed on the reinforcing plate 3 of the test plate, or on the base plate 1, or on the composite material plate 2. Optionally, the second temperature sensor, pressure sensor and strain sensor are installed in a dispersed manner.

[0093] The second temperature sensor is located on the back of the test panel to reduce the risk of damage to the second temperature sensor caused by broken ice and sea water.

[0094] The test plate disclosed in the present scheme simulates a composite material plate 2 fixed on a ship 6, and the composite material plate 2 moves with the ship 6 in an ice water pool 5 or a real marine environment. By collecting parameters such as the temperature, strain and stress on the impact surface and back side of the composite material plate 2, the damage of the composite material plate 2 with different time, different sea ice levels and different energy impact wear is accurately obtained, which provides a reliable technical means for the service environment assessment of composite material components such as ships in a marine environment, and has very important application value.

[0095] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used, and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. The scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned application concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in this application (but not limited to) to form a technical solution.

Claims

1. A test plate, characterized in that: The invention comprises a base plate (1) and a composite material plate (2), wherein the base plate (1) and the composite material plate (2) are stacked and arranged, and at least two oppositely arranged edges of the composite material plate (2) have mounting holes for realizing connection between the base plate (1) and the composite material plate (2). It also comprises a reinforcing plate (3) and a reinforcing sheet (4), wherein the reinforcing plate (3) is located on the front side of the composite material plate (2) and corresponds to the edge of the composite material plate (2) where the mounting hole is provided, and is used to enhance the strength of the edge. The reinforcing sheet (4) is located between the reinforcing plate (3) and the composite material plate (2), and is fixedly connected to the composite material plate (2), and is used to reduce micro-motion wear between the bolts and the mounting holes.

2. The test plate according to claim 1, characterized in that The reinforcing plate (3) is a long strip plate, and the reinforcing plate (3) has at least two first mounting holes that cooperate with the bolts in its length direction; and / or, The shape formed by the plurality of reinforcing plates (3) is the same as the outer peripheral shape of the composite material plate (2).

3. The test plate according to claim 1, characterized in that The reinforcing sheet (4) is adhesively connected to the composite material plate (2).

4. The test plate according to any one of claims 1 to 3, characterized in that: The reinforcing sheet (4) and the composite material plate (2) are made of the same or different materials.

5. The test plate according to any one of claims 1 to 3, characterized in that: The reinforcing plate (3) is a metal plate; and / or, The back side of the composite material plate (2) is provided with the reinforcing plate (3).

6. The test plate according to any one of claims 1 to 3, characterized in that: The base plate (1) is made of the same material as the ship.

7. The test plate according to any one of claims 1 to 3, characterized in that: The length of the substrate (1) is greater than the length of the composite material plate (2), and the width of the substrate (1) is greater than the width of the composite material plate (2).

8. An impact damage assessment device, characterized in that: The invention comprises an ice water pool (5), a ship (6) and a test plate, wherein the test plate is connected to the ship (6) so that the ship (6) drives the test plate to move in the ice water pool (5). The test plate is the test plate according to any one of claims 1 to 7, wherein the composite material plate (2) of the test plate is located on a side of the base plate (1) of the test plate away from the ship (6); Also includes: A first temperature sensor, used to measure the temperature of the ice-water mixture in the ice-water pool (5); a second temperature sensor, used to measure the temperature of the back side of the test plate, the back side of the test plate being the side of the test plate close to the ship (6); A pressure sensor, used to measure the force exerted on the test plate by the water and crushed ice in the ice water pool (5); The strain sensor is used to measure the strain of the test plate.

9. The impact damage assessment device according to claim 8, characterized in that: The base plate (1) of the test plate has a hanging hole (11), and the base plate (1) is connected to the anchor of the ship (6) via the hanging hole (11).

10. The impact damage assessment device according to claim 8, characterized in that: The second temperature sensor, the pressure sensor and the strain sensor are mounted on a reinforcing plate (3) of the test plate; and / or, The second temperature sensor is located on the back side of the test board.

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