CN117664548B - CFRP reinforcing beam durability test equipment and test method - Google Patents
CFRP reinforcing beam durability test equipment and test method Download PDFInfo
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Abstract
The invention relates to the technical field of reinforced beam tests, in particular to a CFRP reinforced beam durability test device and a CFRP reinforced beam durability test method. The invention provides CFRP reinforcing beam durability test equipment, which comprises a frame structure for providing a load test space for a reinforcing beam member, at least two lifting platforms arranged in the load test space and used for supporting and adjusting the height of the reinforcing beam member, and a plurality of load test devices fixed in the load test space at equal intervals in the width direction of the reinforcing beam member. The equipment simulates simulated vehicles of different vehicle types through the mutual matching of the reinforcing beam member, the frame structure, the lifting table and the load testing device, and endows the simulated vehicles with corresponding weight, wheel track, movement direction and quantity so as to achieve the effect of real simulation, and meanwhile, the equipment can test different load testing modes, thereby solving the problems that the prior art cannot simulate real scenes and cannot ensure the test effect.
Description
Technical Field
The invention relates to the technical field of reinforced beam tests, in particular to a CFRP reinforced beam durability test device and a CFRP reinforced beam durability test method.
Background
CFRP (carbon fiber reinforced polymer) reinforced beams are a structural reinforcement technology, and carbon fiber cloth or plates are used to combine with a polymer matrix to enhance the bearing capacity and durability of concrete, steel or wood and other base materials, and are generally applied to various engineering and building fields such as bridge engineering, building structures, road engineering and the like. Before the CFRP reinforcing beam is put into use, test equipment is required to evaluate the durability of the CFRP reinforcing beam, so that whether the CFRP reinforcing effect meets the design requirement or not is facilitated to be verified, and the reinforced structure can be ensured to be safe and reliable in the expected service life.
The utility model discloses a be used for CFRP material reinforcing beam durability test device of prior art publication No. CN208076145U, in order to simulate different vehicles to drive through the reinforcing beam test piece and place the intracavity through placing the metal sheet of different weight, directly act on the reinforcing beam test piece through the weight of a plurality of metal wheels in order to carry out the load test. On the one hand, the prior art can only generate load tests with a plurality of fixed weights, the test range is limited, on the other hand, the positions of a plurality of metal wheels are concentrated, so that load scenes of different vehicle types and scattered wheels cannot be simulated more truly, and the test effect cannot be guaranteed.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides CFRP reinforcing beam durability test equipment and a test method, which can effectively solve the problems that the load test range of the prior art is limited and a real load scene cannot be truly simulated.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides CFRP reinforcing beam durability test equipment, which comprises a frame structure, at least two lifting platforms and a plurality of load test devices, wherein the frame structure is used for providing a load test space for a reinforcing beam member, the lifting platforms are arranged in the load test space and are used for supporting and adjusting the height of the reinforcing beam member, and the load test devices are equidistantly fixed in the width direction of the reinforcing beam member;
The load testing device comprises a plurality of force application components which can be static relative to the reinforcing beam member or move along the length direction of the reinforcing beam member, wherein the force application components comprise an upper moving body and a lower moving body which are distributed up and down, the opposite sides of the upper moving body and the lower moving body are respectively fixedly provided with an upper electromagnetic plate and a lower electromagnetic plate, the upper electromagnetic plates and the lower electromagnetic plates are arranged in a repulsive manner and are respectively connected with an external direct current power supply, the external direct current power supplies are electrically connected with a controller, the lower moving body has a trend of upward movement after receiving vertical downward force, the side surface of the lower electromagnetic plate is fixedly provided with at least one vibrating piece, the lower end of the lower moving body is rotatably provided with two running wheels, and the wheel distance of the two running wheels is adjustable;
An intelligent monitoring system for monitoring the strain and displacement parameters of the reinforcing beam member in real time is arranged in the load testing space frame structure.
Further, the frame structure comprises a bottom supporting plate and two side supporting plates fixed at the upper end of the bottom supporting plate, and positioning grooves equal to the load testing devices in number are formed in the side supporting plates at equal intervals in the width direction.
Further, the load testing device further comprises two positioning plates, the positioning plates are matched with the positioning grooves in a positioning way, a transverse guide rod and a threaded rod are arranged between the two positioning plates in an up-down parallel mode, the transverse guide rod is fixedly connected with the positioning plates, the threaded rod is rotationally connected with the positioning plates, and a driving piece for driving the threaded rod is fixedly arranged on one of the positioning plates;
the upper moving body is sleeved on the transverse guide rod in a sliding manner, a through groove is horizontally formed in the lower moving body, two side grooves are symmetrically formed in the inner wall of the through groove, and thread meshing structures are symmetrically arranged in the two side grooves;
the thread engagement structure comprises a linear motor fixedly arranged on the inner wall of the side groove, a telescopic piece is fixedly arranged at the moving end of the linear motor, and a half nut capable of being engaged with the threaded rod is fixedly arranged at the telescopic end of the telescopic piece.
Further, a plurality of vertical guide rods are fixed at the lower end of the upper moving body, the lower ends of the vertical guide rods are slidably inserted into the upper end of the lower moving body, elastic pieces are sleeved outside the vertical guide rods, and two ends of each elastic piece are fixedly connected with the upper moving body and the lower moving body respectively.
Further, the upper moving body is fixedly connected with a magnetic shielding cover on the opposite side of the lower moving body and the periphery of the upper electromagnetic plate and the periphery of the lower electromagnetic plate.
Further, the tread adjusting range of the two running wheels is 2.4-4 m.
Further, the magnetic repulsive force generated by the upper electromagnetic plate and the lower electromagnetic plate ranges from 250 to 25000 x g, wherein g=9.8n/kg.
A test method of CFRP reinforcing beam durability test equipment comprises the following steps:
S1, pushing a reinforcing beam member onto a lifting table in the width direction, and falling the reinforcing beam member through the lifting table so that a gap exists between a running wheel and the upper surface of the reinforcing beam member;
S2, determining a vehicle type of a load test according to the width range of the reinforcing beam member, forming a simulated vehicle through a plurality of force application components, determining the number of the simulated vehicles and respective movement directions, and determining a load test mode, wherein the load test mode comprises a static test mode, a dynamic test mode and a pulse test mode;
S3, carrying out load test, monitoring strain and displacement parameters of the reinforcing beam member in real time through an intelligent monitoring system in the test process, and generating test data.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
The equipment simulates simulated vehicles of different vehicle types through the mutual matching of the reinforcing beam member, the frame structure, the lifting table and the load testing device, and endows the simulated vehicles with corresponding weight, wheel track, movement direction and quantity so as to achieve the effect of real simulation, and meanwhile, the equipment can test different load testing modes, thereby solving the problems that the prior art cannot simulate real scenes and cannot ensure the test effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of a load testing apparatus according to the present invention;
FIG. 3 is a perspective view of a frame structure of the present invention;
FIG. 4 is a cross-sectional view of the force application assembly of the present invention;
Fig. 5 is a perspective view of the force application assembly of the present invention.
Reference numerals in the drawings represent respectively: 1. reinforcing the beam member; 2. a frame structure; 21. a side support plate; 211. a positioning groove; 22. a bottom support plate; 3. a lifting table; 4. a load testing device; 41. a positioning plate; 42. a transverse guide rod; 43. a threaded rod; 44. a force application assembly; 441. an upper moving body; 442. a lower moving body; 4421. a through groove; 4422. a side groove; 443. an electromagnetic plate is arranged; 444. a lower electromagnetic plate; 445. a magnetic shield; 446. a vertical guide rod; 447. a vibrating member; 448. a thread engagement structure; 4481. a linear motor; 4482. a telescoping member; 4483. a half nut; 449. a travel wheel; 45. a driving member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
Examples:
Referring to fig. 1 to 5, a CFRP reinforcing beam durability test apparatus includes a frame structure 2 providing a load test space for a reinforcing beam member 1, at least two elevating platforms 3 (which is a prior art) disposed in the load test space for supporting and adjusting the height of the reinforcing beam member 1, and a plurality of load test devices 4 equally spaced apart from each other in the width direction of the reinforcing beam member 1 and fixed in the load test space. The device can push reinforcing beam members 1 with different sizes onto the lifting table 3 by means of external equipment (such as a hydraulic thrust machine) through the mutual matching of the reinforcing beam members 1, the frame structure 2, the lifting table 3 and the load testing device 4, gaps exist between the reinforcing beam members 1 with different thicknesses and the lowest end of the load testing device 4 by using the lifting table 3, then simulation vehicles with different vehicle types are simulated by the load testing device 4, corresponding weight, wheel track, movement direction and quantity of the simulation vehicles are endowed to achieve the effect of real simulation, and meanwhile, the test of different load testing modes (static load, dynamic load and pulse load) can be carried out, so that the problem that the prior art cannot simulate real scenes and cannot ensure the test effect is solved.
Specifically, referring to fig. 3, the frame structure 2 includes a bottom support plate 22 and two side support plates 21 fixed at the upper ends of the bottom support plate 22, where the side support plates 21 are equidistantly provided with positioning slots 211 equal to the number of the load testing devices 4 in the width direction, and may be fixed by a fixing manner common in the prior art, such as screw fixing, it should be noted that the width of the side support plates 21 is not limited, and the actual arrangement scenario and test need be limited, and accordingly, the load testing of the reinforcing beam member 1 by the same number of load testing devices 4 in different positions within the width range is also required.
Specifically, referring to fig. 1 to 2 and 4 to 5, the load testing device 4 includes a plurality of force application assemblies 44 that are stationary with respect to the reinforcing beam member 1 or movable in the longitudinal direction of the reinforcing beam member 1, and since the force application assemblies 44 are provided as a single body forming a simulated vehicle, the force application assemblies 44 can be set as desired in the number of stationary and movable states, and the force application assemblies 44 in the movable states constitute vehicles simulating corresponding vehicle types, such as cars, SUVs, cross-border vehicles, trucks, vans, etc., and vehicles of different vehicle types have different numbers of wheels.
More specifically, referring to fig. 4 to 5, the force application assembly 44 includes an upper moving body 441 and a lower moving body 442 that are distributed up and down, an upper electromagnetic plate 443 and a lower electromagnetic plate 444 are fixedly disposed on opposite sides of the upper moving body 441 and the lower moving body 442, respectively, and the upper electromagnetic plate 443 and the lower electromagnetic plate 444 are disposed in a repulsive manner (i.e. opposite magnetic pole directions) and are respectively connected with an external dc power source, the upper electromagnetic plate 443 and the lower electromagnetic plate 444 are energized by the external dc power source to generate a repulsive magnetic field, and the lower moving body 442 is movably disposed relative to the upper moving body 441, so that a corresponding pressure is indirectly transferred to the reinforcing beam member 1 by the lower moving body 442 to perform a load test, so as to form an influence of the simulated vehicle weight on the gravity (load) generated by the reinforcing beam member 1. It should be noted that, the static load test is a constant load applied to the reinforcing beam member 1 and kept unchanged, and can simulate the load born by the reinforcing beam member 1 under the static or normal condition, so as to evaluate the static stability and the bearing capacity of the reinforcing beam member 1; the dynamic load is a load applied to the reinforcing beam member 1 at a variable frequency or vibration, and can simulate the response of the reinforcing beam member 1 in a dynamic environment such as an earthquake, wind, mechanical vibration, etc., and is suitable for the case where the stability and durability of the reinforcing beam member 1 in a dynamic condition such as an earthquake need to be evaluated, and the purpose of fixing at least one vibrating piece 447 (which is a vibrator) to the side surface of the lower electromagnetic plate 444 is also that; the above-described impulse load is a load applied to the structure in the form of a transient impact or impact load that simulates the response of the reinforcing beam member 1 during an explosion, collision or other transient impact event for evaluating the impact resistance of the reinforcing beam member 1 in the event of an accident or emergency.
In order to avoid the influence of the magnetic field generated by the upper electromagnetic plate 443 and the lower electromagnetic plate 444 on the outside as much as possible, a magnetic shield 445 is fixedly attached to the outer periphery of the upper electromagnetic plate 443 and the lower electromagnetic plate 444 on the side opposite to the upper moving body 441 and the lower moving body 442, and the magnetic field is made of a magnetic shielding material by the magnetic shield 445 so that the magnetic field acts only inside the magnetic shield 445, and the upper moving body 441 and the lower moving body 442 are made of the same magnetic shielding material.
In addition, the lower moving body 442 in a normal state has a tendency of moving upwards after receiving a vertical downward force, so that the lower moving body 442 is in an elastic lifting state in a normal state, thereby ensuring that no gravity influence is generated on the reinforcing beam member 1 under the influence of a magnetic field, and achieving the purposes as follows: the lower end of the upper moving body 441 is fixed with a plurality of vertical guide rods 446, the lower end of the vertical guide rods 446 is slidably inserted into the upper end of the lower moving body 442, the vertical guide rods 446 are sleeved with elastic pieces, two ends of each elastic piece are fixedly connected with the upper moving body 441 and the lower moving body 442 respectively, the lower moving body 442 is in a lifting state under the influence of magnetic repulsion of the elastic pieces, the lower moving body 442 is pushed downwards under the influence of magnetic repulsion, and pressure is generated on the reinforcing beam member 1 to carry out load test.
The lower end of the lower moving body 442 is rotatably provided with two running wheels 449, and the wheel distance of the two running wheels 449 is adjustable, and the wheel distance adjustable modes of the two running wheels 449 are various, such as a hydraulic press, so that the wheel distance of the two running wheels 449 accords with the simulated vehicles of corresponding vehicle types, and the wheel distance adjusting range of the two running wheels 449 of the vehicles of different vehicle types in reality is 2.4-4 m, and the corresponding adjustment can be performed in the range.
Referring to fig. 1 to 3, the following arrangements are provided for positioning and fixing the load testing device 4 to the frame structure 2: the load testing device 4 further comprises two positioning plates 41, the positioning plates 41 are matched with the positioning grooves 211 in a positioning mode, the positioning grooves 211 and the positioning plates 41 are provided with limiting structural features, a transverse guide rod 42 and a threaded rod 43 are arranged between the two positioning plates 41 in an up-down parallel mode, the transverse guide rod 42 is fixedly connected with the positioning plates 41, the threaded rod 43 is rotationally connected with the positioning plates 41, a driving piece 45 (driving motor) for driving the threaded rod 43 is fixedly installed on one of the positioning plates 41, the driving speed and the driving direction can be set through the driving piece 45 to determine the driving speed and the driving direction of the simulated vehicle, when the lower moving body 442 is in a movable state, the threaded rod 43 is driven through the driving piece 45, the load testing device 4 moves in the length direction of the reinforced beam member 1 under the limit of the two lines of the transverse guide rod 42 and the threaded rod 43, the motion of the simulated vehicle relative to the reinforced beam member 1 is achieved, and when the limit position of one end of the threaded rod 43 is reached, the driving piece 45 is required to be reversely driven. Since the weight of the load testing device 4 is balanced with respect to the weight of the lateral guide bar 42, the load testing device 4 does not deflect when it is in a stationary state with respect to the reinforcing beam member 1, and may be used as a supporting and limiting means.
More specifically, the upper moving body 441 is slidably sleeved on the lateral guide rod 42, the lateral guide rod 42 guides the upper moving body 441, and the lateral guide rod 42 may be circular, but preferably square for limiting. In order to achieve a switching of the stationary and movable state of the load testing device 4 relative to the reinforcement beam member 1, the following is provided: 1. the lower moving body 442 is horizontally provided with a through groove 4421, two side grooves 4422 are symmetrically provided on the inner wall of the through groove 4421, and screw engagement structures 448 are symmetrically provided on the two side grooves 4422, so that when the load testing device 4 in a movable state applies pressure to the reinforcing beam member 1, the lower moving body 442 relatively descends, but no movement interference occurs due to the existence of the through groove 4421.
More specifically, the screw engagement structure 448 includes a linear motor 4481 fixedly disposed on an inner wall of the side groove 4422, a moving end (slider) of the linear motor 4481 is fixedly provided with a telescopic member 4482 (which is an electric telescopic rod), a telescopic end of the telescopic member 4482 is fixedly provided with a half nut 4483 which can be engaged with the threaded rod 43, a space exists between the half nut 4483 and the threaded rod 43 in the load test device 4 in a stationary state relative to the reinforcing beam member 1, the space is not affected by rotation of the threaded rod 43, when the load test device 4 needs to be switched to a movable state, a vertical position of the half nut 4483 is adjusted by the linear motor 4481, a horizontal position of the half nut 4483 is adjusted by the telescopic member 4482, when the half nut 4483 corresponds to the threaded rod 43, engagement of the half nut 4483 and the threaded rod 43 is achieved by cooperation of the linear motor 4481 and the telescopic member 4482, and the position determination can be achieved by using intelligent elements such as photoelectric correlation type sensors.
In addition, the device also comprises an intelligent monitoring system for monitoring parameters such as strain, displacement and the like of the reinforcing beam member 1 in real time, wherein the intelligent monitoring system is in the prior art and can perform functions such as data acquisition, processing, monitoring, alarming and analysis so as to monitor and analyze load tests in real time.
Based on the above, there is additionally provided a test method of a CFRP reinforcement beam durability test apparatus, comprising the steps of:
S1, pushing the reinforcing beam member 1 onto a lifting table 3 in the width direction, and falling the reinforcing beam member 1 through the lifting table 3 so that a gap exists between a traveling wheel 449 and the upper surface of the reinforcing beam member 1, wherein before pushing the reinforcing beam member 1, the upper end of the lifting table 3 is at the lowest position to provide a larger pushing space;
s2, determining a vehicle type of a load test according to the width range of the reinforcing beam member 1, forming a simulated vehicle through a plurality of force application components 44, determining the number of the simulated vehicles and respective movement directions, and determining a load test mode, wherein the load test mode comprises a static test mode, a dynamic test mode and a pulse test mode;
s3, carrying out load test, and monitoring the strain and displacement parameters of the reinforcing beam member 1 in real time through an intelligent monitoring system in the test process to generate test data.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The CFRP reinforcing beam durability test equipment is characterized by comprising a frame structure (2) for providing a load test space for a reinforcing beam member (1), at least two lifting platforms (3) arranged in the load test space and used for supporting and adjusting the height of the reinforcing beam member (1), and a plurality of load test devices (4) which are equidistantly fixed in the width direction of the reinforcing beam member (1) in the load test space;
The load testing device (4) comprises a plurality of force application components (44) which can be static relative to the reinforcing beam member (1) or move in the length direction of the reinforcing beam member (1), the force application components (44) comprise an upper moving body (441) and a lower moving body (442) which are distributed up and down, an upper electromagnetic plate (443) and a lower electromagnetic plate (444) are respectively fixedly arranged on opposite sides of the upper moving body (441) and the lower moving body (442), the upper electromagnetic plate (443) and the lower electromagnetic plate (444) are in repulsive arrangement and are respectively connected with an external direct current power supply, the external direct current power supplies are electrically connected with a controller, the lower moving body (442) has a trend of upward movement after being subjected to vertical downward force, at least one vibrating piece (447) is fixed on the side face of the lower electromagnetic plate (444), two running wheels (449) are rotatably arranged at the lower end of the lower moving body (442), and the wheel distances of the two running wheels (449) are adjustable;
An intelligent monitoring system for monitoring the strain and displacement parameters of the reinforced beam member (1) in real time is arranged in the frame structure (2) of the load test space;
The load testing device (4) further comprises two positioning plates (41), the positioning plates (41) are matched with the positioning grooves (211) in a positioning mode, transverse guide rods (42) and threaded rods (43) are arranged between the two positioning plates (41) in an up-down parallel mode, the transverse guide rods (42) are fixedly connected with the positioning plates (41), the threaded rods (43) are rotatably connected with the positioning plates (41), and a driving piece (45) used for driving the threaded rods (43) is fixedly installed on one of the positioning plates (41);
The upper moving body (441) is slidably sleeved on the transverse guide rod (42), a through groove (4421) is horizontally formed in the lower moving body (442), two side grooves (4422) are symmetrically formed in the inner wall of the through groove (4421), and thread meshing structures (448) are symmetrically arranged in the two side grooves (4422);
The thread engagement structure (448) comprises a linear motor (4481) fixedly arranged on the inner wall of the side groove (4422), a telescopic piece (4482) is fixedly arranged at the moving end of the linear motor (4481), and a half nut (4483) capable of being engaged with the threaded rod (43) is fixedly arranged at the telescopic end of the telescopic piece (4482).
2. The CFRP reinforcement beam durability test apparatus according to claim 1, wherein the frame structure (2) includes a bottom support plate (22) and two side support plates (21) fixed at the upper ends of the bottom support plate (22), and the side support plates (21) are provided with positioning grooves (211) equal in number to the load test devices (4) at equal intervals in the width direction.
3. The CFRP reinforcement beam durability test apparatus of claim 1 wherein a plurality of vertical guide rods (446) are fixed at the lower end of the upper moving body (441), the lower ends of the vertical guide rods (446) are slidably inserted into the upper ends of the lower moving body (442), elastic members are sleeved outside the vertical guide rods (446), and both ends of the elastic members are fixedly connected with the upper moving body (441) and the lower moving body (442) respectively.
4. The CFRP reinforcement beam durability test apparatus of claim 1 wherein a magnetic shield (445) is fixedly connected to the outer periphery of the upper electromagnetic plate (443) and the lower electromagnetic plate (444) on the side of the upper moving body (441) opposite to the lower moving body (442).
5. A CFRP reinforcement beam durability test apparatus according to claim 1 wherein the tread adjustment range of two said running wheels (449) is 2.4-4 m.
6. The CFRP reinforcement beam durability test apparatus of claim 1 wherein the magnetic repulsive force generated by the upper electromagnetic plate (443) and the lower electromagnetic plate (444) ranges from 250 to 25000 x g, where g=9.8N/kg.
7. A testing method of the CFRP reinforcement beam durability test apparatus according to any one of claims 1-6, comprising the steps of:
S1, pushing the reinforcing beam member (1) onto a lifting table (3) in the width direction, and falling the reinforcing beam member (1) through the lifting table (3) so that a gap exists between a running wheel (449) and the upper surface of the reinforcing beam member (1);
S2, determining a vehicle type of a load test according to the width range of the reinforcing beam member (1), forming a simulated vehicle through a plurality of force application components (44), determining the number of the simulated vehicles and respective movement directions, and determining a load test mode, wherein the load test mode comprises a static test mode, a dynamic test mode and a pulse test mode;
S3, carrying out load test, and monitoring strain and displacement parameters of the reinforcing beam member (1) in real time through an intelligent monitoring system in the test process to generate test data.
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| KR20100046462A (en) * | 2008-10-27 | 2010-05-07 | 한국전력공사 | A prestressing anchorage system of carbon fiber reinforced polymer plate for flexural strengthening of rc structures |
| KR101478763B1 (en) * | 2014-05-13 | 2015-01-02 | 원광이엔텍 주식회사 | Apparatus for testing torsion fatigue of cfrp drive shaft and bar applied with composite material |
| CN104502076A (en) * | 2014-12-12 | 2015-04-08 | 广西科技大学 | Method for arranging strain gauges in continuous beam plastic force test |
| CN206020192U (en) * | 2016-09-27 | 2017-03-15 | 西南林业大学 | One kind is used for the material reinforced beam durability test devices of CFRP |
| CN208076145U (en) * | 2018-05-09 | 2018-11-09 | 陕西铁路工程职业技术学院 | One kind being used for the material reinforced beam durability test devices of CFRP |
| CN110646301A (en) * | 2019-10-30 | 2020-01-03 | 西安建筑科技大学 | Shear test device and method for testing CFRP/steel interface bonding performance |
| CN111398073A (en) * | 2020-02-26 | 2020-07-10 | 辽宁工业大学 | Test device and method for simulating CFRP (carbon fiber reinforced plastics) reinforced coal sample impact disturbance |
| CN115165579A (en) * | 2022-06-28 | 2022-10-11 | 中国建筑第八工程局有限公司 | Testing device and testing method for mechanical property of CFRP (carbon fiber reinforced plastics) material |
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