Auxiliary heating mounting platform for high temperature compression testing of laminates and method of use

Abstract

The application provides an auxiliary heating installation platform for high-temperature compression test of laminated boards, which comprises a movable platform with a table top on the top and a heating control box in the interior; two parallel slide rails on the table top; a sliding block on each slide rail; two symmetrically placed L-shaped installation plates, each of which is installed on the sliding blocks on the same side of the two slide rails, so that the two L-shaped installation plates can move on the slide rails; wherein each L-shaped installation plate comprises a vertical plate and a horizontal plate, the horizontal plate is a hollow structure, a heating plate is arranged in the hollow structure, the end of the heating plate is provided with a terminal post, the terminal post is connected with the heating control box, a temperature sensor is embedded in the top surface of the horizontal plate of the L-shaped installation plate, and the temperature sensor is also connected with the heating control box; and a detachable partition plate is movably installed on the horizontal plate of the L-shaped installation plate and used for keeping the end surface of the test piece and the end surface of the compression clamp flush during the replacement of the high-temperature compression test.

Description

Technical Field

[0001] This application belongs to the field of mechanical testing technology for polymer-based composite materials, and specifically relates to an auxiliary heating installation platform and its usage method for high-temperature compression testing of laminates. Background Technology

[0002] Compression testing is an important test method for measuring the compressive strength, compressive modulus, and Poisson's ratio of polymer-based composite laminates. Standards such as ASTM D6641, ASTM D6484, and ASTM D6742 provide specific test methods for compressive performance testing. To obtain the compressive performance of composite laminates at high temperatures, the test specimens must be heated in an environmental chamber according to standard requirements to maintain the working section at the required ambient temperature during the test. This necessitates achieving thermal equilibrium inside the environmental chamber.

[0003] Existing standard environmental chambers enclose the clamps, fixtures, and test specimens. The clamps and fixtures are large metal structures that require prolonged heating and insulation to reach the required thermal equilibrium state. After a compression test on a specimen, the fixtures and the damaged specimen must be removed from the environmental chamber, the fixtures disassembled, and a new specimen reinstalled. During disassembly and reinstallation, the fixtures rapidly cool at room temperature. After reinstallation, the entire assembly of fixtures and specimen must be reheated and insulated within the environmental chamber, a process that typically takes more than ten minutes. For high-temperature compression tests, this reheating and insulation process can take tens of minutes, severely impacting the efficiency of high-temperature compression testing. Summary of the Invention

[0004] The purpose of this application is to provide an auxiliary heating mounting platform for high-temperature compression testing of laminates, in order to solve or mitigate at least one of the problems in the prior art.

[0005] The technical solution of this application is: an auxiliary heating installation platform for high-temperature compression testing of laminates, the auxiliary heating installation platform comprising:

[0006] A movable platform, the top of which has a table, and the interior of which carries a heating control box;

[0007] Two parallel slide rails are placed on the platform;

[0008] Slider blocks are placed on the slide rails, wherein each slide rail has two slider blocks;

[0009] Two symmetrically placed L-shaped mounting plates are mounted on sliders on the same side of two slide rails, allowing the two L-shaped mounting plates to move along the slide rails. Each L-shaped mounting plate includes a vertical plate and a horizontal plate. The horizontal plate is hollow and contains a heating plate. The end of the heating plate has a terminal that passes through the vertical plate and connects to the heating control box. A temperature sensor is also embedded in the top surface of the horizontal plate of each L-shaped mounting plate and is connected to the heating control box.

[0010] A detachable partition is movably mounted on the horizontal plate of the L-shaped mounting plate, used to keep the end face of the test piece flush with the end face of the compression fixture during high-temperature compression testing.

[0011] In a preferred embodiment of this application, the bottom of the movable platform has rollers, and the movable platform can be stopped by locking the rollers.

[0012] In a preferred embodiment of this application, the interior of the movable platform is provided with a plurality of flat plates, which form an area inside the movable platform capable of holding installation tools and a heating control box.

[0013] In a preferred embodiment of this application, the heating plate is a cast aluminum structure.

[0014] In a preferred embodiment of this application, the bottom of the detachable partition has a groove adapted to the width of the horizontal plate of the L-shaped mounting plate, and the detachable partition is placed on the horizontal plate of the L-shaped mounting plate through the groove.

[0015] In addition, this application also provides a method for using an auxiliary heating mounting platform for high-temperature compression testing of laminates as described above, the process including:

[0016] When the high-temperature compression test requires a change of equipment, push the auxiliary heating installation platform to the vicinity of the environmental chamber for the change of equipment, lock the pulleys, open the environmental chamber, and take out the test piece that has just completed the compression test together with the compression fixture. Place the left and right parts of the compression fixture on the two L-shaped mounting plates respectively, slide the L-shaped mounting plates so that the compression fixture is placed exactly on the temperature sensors embedded in the two L-shaped mounting plates. The compression fixture that has just been taken out will exchange heat with the surrounding air, which will cause its own temperature to drop. At this time, the temperature sensor measures the temperature of the compression fixture in real time and feeds it back to the heating control box. The heating control box controls the cast aluminum heating plate embedded in the L-shaped mounting plate to heat the compression fixture according to the temperature measurement value, so as to maintain the temperature of the compression fixture.

[0017] Remove the bolts on the compression clamp, take out the compressed test piece, and install a new test piece. Install the removable partition along the end of the compression clamp onto the horizontal plate of the L-shaped mounting plate. At the same time, press the end of the new test piece against the removable partition to ensure that the left and right ends of the new test piece are flush with the left and right sides of the compression clamp. After the test piece and the compression clamp are replaced, put them back into the environmental chamber for the next compression test.

[0018] The auxiliary heating installation platform provided in this application is suitable for high-temperature compression performance testing of polymer-based composite laminates. It can heat the compression clamps during the test piece replacement process to ensure that the compression clamps remain within the temperature range required by the test during the replacement process. At the same time, the platform of this application can also help keep the compression clamps flush with the ends of the test pieces, which is convenient for installation. It can also be easily adapted to clamp replacement of different lengths by adjusting the position of the detachable partition. Attached Figure Description

[0019] To more clearly illustrate the technical solutions provided in this application, the accompanying drawings will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application.

[0020] Figure 1 This is a schematic diagram of the auxiliary heating installation platform structure of this application.

[0021] Figure 2 This is a schematic diagram of the removable partition in this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings.

[0023] In order to keep the high-temperature compression test fixture for composite laminates at a temperature close to the test requirements during the replacement process, thereby effectively reducing the time for reheating and heat preservation after replacement and improving test efficiency, this application provides an installation platform with a simple structure, easy installation and auxiliary heating.

[0024] like Figure 1 As shown, the auxiliary heating mounting platform improved in this application is used for high-temperature compression performance testing of polymer-based composite laminates. The auxiliary heating mounting platform 100 includes: a movable platform 10, a slide rail 20, a slider 30, an L-shaped mounting plate 40, a detachable partition 50, and a heating control box 60.

[0025] The movable platform 10 includes a frame 11, a panel 12, and casters 13. The frame 11 is the main structure of the movable platform 10, the panel 12 is located on top of the frame 11, and the casters 13 are located at the bottom of the frame 11. Several flat plates 14 are provided in the middle of the frame 11, thus forming an area in the middle of the frame 11 where tools or equipment can be placed. In this embodiment of the application, the flat plates 14 divide the frame 11 into left and right areas. The left area has two flat plates 14 arranged vertically, thus forming an upper and lower two-layer area where installation tools or bolts can be placed. The right area has only one flat plate 14 near the bottom, thus forming a through area where the heating control box 60 can be placed.

[0026] Two parallel slide rails 20 are bolted to the panel 12 at the top of the movable platform 10. Each slide rail 20 is equipped with two sliders 30—a left slider 31 and a right slider 32. The left sliders 31 on the two slide rails 20 are bolted to an L-shaped mounting plate 40, and the right sliders 32 on the two slide rails 20 are bolted to another L-shaped mounting plate 40. This allows the two L-shaped mounting plates 40 to move closer or further apart along the slide rails 20, facilitating the installation of the compression fixture 200 used for high-temperature compression testing of laminates.

[0027] There are two L-shaped mounting plates 40, and the two L-shaped mounting plates 40 are symmetrical in structure. Taking either L-shaped mounting plate 40 as an example, the L-shaped mounting plate 40 consists of a horizontal plate and a vertical plate. The horizontal plate has a hollow structure, and a cast aluminum heating plate 41 with heating function is embedded in the middle structure. The cast aluminum heating plate 41 extends from one side of the vertical plate of the L-shaped mounting plate 10 with two terminal posts 42. The terminal posts 42 are connected to the heating control box 60 in the movable platform 10 through wires. The heating control box 60 realizes the heating control of the cast aluminum heating plate 41.

[0028] In addition, a temperature sensor 42 is embedded in the top surface of the horizontal plate of the L-shaped mounting plate 40. The temperature sensor 42 is electrically connected to the heating control box 60, and the temperature it measures can be fed back to the heating control box 60. The heating control box 60 can control the cast aluminum heating plate 41 to heat the L-shaped mounting plate 40 to maintain the L-shaped mounting plate 40 at the temperature required for the test, thereby ensuring that the compression clamp 200 is always kept within the temperature range required for the test during the replacement process.

[0029] like Figure 2 As shown, the bottom of the detachable partition 50 is provided with a groove that matches the width of the horizontal plate of the L-shaped mounting plate 40. It is detachably mounted on the horizontal plates of the two L-shaped mounting plates 40. The detachable partition 50 can be clamped at different positions on the horizontal plates of the L-shaped mounting plate 40 according to the length of the test piece, so as to adapt to the replacement of compression clamps 200 of different lengths.

[0030] When the high-temperature compression test requires a change of equipment, push the auxiliary heating mounting platform 100 to the vicinity of the changing environment chamber, lock the pulley 13, open the environment chamber, and take out the test piece that has just completed the compression test together with the compression fixture 200. Place the left and right parts of the compression fixture 200 on the two L-shaped mounting plates 40 respectively. Slide the L-shaped mounting plates 40 so that the compression fixture 200 is placed exactly on the temperature sensors 42 embedded in the two L-shaped mounting plates 40. The compression fixture 200, which has just been taken out, will exchange heat with the surrounding air, causing its own temperature to drop. At this time, the temperature sensor 42 measures the temperature of the compression fixture 200 in real time and feeds it back to the heating control box 60. The heating control box 60 controls the cast aluminum heating plate 41 embedded in the L-shaped mounting plate 40 to heat the compression fixture 200 according to the temperature measurement value, so as to maintain the temperature of the compression fixture 200 from dropping.

[0031] At this point, remove the bolts on the compression clamp 200, take out the compressed test piece (not shown), and install a new test piece. Install the removable partition 50 along the end of the compression clamp 200 onto the horizontal plate of the L-shaped mounting plate 40. Simultaneously, press the end of the new test piece against the removable partition 50, ensuring that the left and right ends of the new test piece are flush with the left and right sides of the compression clamp 200, thus ensuring the installation accuracy of the compression test. The replaced test piece and compression clamp 200 are then reinstalled into the environmental chamber for the next compression test.

[0032] The auxiliary heating installation platform provided in this application is suitable for high-temperature compression performance testing of polymer-based composite laminates. It can heat the compression clamps during the test piece replacement process to ensure that the compression clamps remain within the temperature range required by the test during the replacement process. At the same time, the platform of this application can also help keep the compression clamps flush with the ends of the test pieces, which is convenient for installation. It can also be easily adapted to clamp replacement of different lengths by adjusting the position of the detachable partition.

[0033] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of using an auxiliary heating mounting platform for high temperature compression testing of laminates, characterized in that, The auxiliary heating installation platform includes: A movable platform, the top of which has a table, and the interior of which carries a heating control box; Two parallel slide rails are placed on the platform; Slider blocks are placed on the slide rails, wherein each slide rail has two slider blocks; Two symmetrically placed L-shaped mounting plates are mounted on sliders on the same side of two slide rails, allowing the two L-shaped mounting plates to move along the slide rails. Each L-shaped mounting plate includes a vertical plate and a horizontal plate. The horizontal plate is hollow and contains a heating plate. The end of the heating plate has a terminal that passes through the vertical plate and connects to the heating control box. A temperature sensor is also embedded in the top surface of the horizontal plate of each L-shaped mounting plate and is connected to the heating control box. A detachable partition is movably mounted on the horizontal plate of the L-shaped mounting plate, used to keep the end face of the test piece flush with the end face of the compression fixture during high-temperature compression test replacement. The method of use includes: When the high-temperature compression test requires a change of equipment, push the auxiliary heating installation platform to the vicinity of the environmental chamber for the change of equipment. Open the environmental chamber and take out the test piece that has just completed the compression test together with the compression fixture. Place the left and right parts of the compression fixture on the two L-shaped mounting plates respectively. Slide the L-shaped mounting plates so that the compression fixture is placed exactly on the temperature sensors embedded in the two L-shaped mounting plates. The compression fixture that has just been taken out will exchange heat with the surrounding air, which will cause its own temperature to drop. At this time, the temperature sensor measures the temperature of the compression fixture in real time and feeds it back to the heating control box. The heating control box controls the cast aluminum heating plate embedded in the L-shaped mounting plate to heat the compression fixture according to the temperature measurement value, so as to maintain the temperature of the compression fixture. Remove the bolts on the compression clamp, take out the compressed test piece, and install a new test piece. Install the removable partition along the end of the compression clamp onto the horizontal plate of the L-shaped mounting plate. At the same time, press the end of the new test piece against the removable partition to ensure that the left and right ends of the new test piece are flush with the left and right sides of the compression clamp. After the test piece and the compression clamp are replaced, put them back into the environmental chamber for the next compression test.

2. The method of use of claim 1, wherein, The movable platform has rollers at its bottom, and locking the rollers can stop the movable platform.

3. The method of use of claim 1 or 2, wherein, The movable platform has several flat plates inside, which form an area inside the movable platform that can accommodate installation tools and a heating control box.

4. The method of use as described in claim 1, characterized in that, The heating plate is made of cast aluminum.

5. The method of use of claim 1, wherein, The bottom of the removable partition has a groove that fits the width of the horizontal plate of the L-shaped mounting plate, and the removable partition is placed on the horizontal plate of the L-shaped mounting plate through the groove.

Images