CN115235913A - Test system for simulating single-sided thermal damage of resin-based composite material - Google Patents
Test system for simulating single-sided thermal damage of resin-based composite material Download PDFInfo
- Publication number
- CN115235913A CN115235913A CN202210857830.0A CN202210857830A CN115235913A CN 115235913 A CN115235913 A CN 115235913A CN 202210857830 A CN202210857830 A CN 202210857830A CN 115235913 A CN115235913 A CN 115235913A
- Authority
- CN
- China
- Prior art keywords
- heating
- pipeline
- chamber
- pressure
- airflow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/60—Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0057—Generation of the force using stresses due to heating, e.g. conductive heating, radiative heating
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention provides a test system for simulating single-side thermal damage of a resin-based composite material, which belongs to the technical field of composite material test and comprises an airflow loading mechanism, an airflow processing mechanism, a closed clamping mechanism, a detection unit and a data acquisition unit, wherein the airflow loading mechanism is used for conveying inert gas; the input end of the airflow processing mechanism is connected with the output end of the airflow loading mechanism so as to realize inert gas heating or refrigerating; the input end of the closed clamping mechanism is connected with the output end of the airflow processing mechanism to fix the sample and form a closed environment. The system can carry out quantitative high/low temperature heat damage, quantitative single-side and local airflow heat damage and single-side cold-heat circulation/cold-heat impact damage on the resin-based composite material, can also accurately measure the dynamic change of the parameters of the resin-based composite material, such as temperature, strain, heat conductivity coefficient and the like, has simple and convenient system structure, stable and reliable operation and good control effect on temperature and heat flow.
Description
Technical Field
The invention belongs to the technical field of composite material testing, and particularly relates to a testing system for simulating single-side thermal damage of a resin-based composite material.
Background
Resin-based composite materials have become important candidate materials for high-performance cold end parts of aircraft engines due to a series of advantages of high specific strength, high specific modulus, fatigue resistance, corrosion resistance, designability and the like, and are gradually applied to cold end parts of aircraft engines (such as thermal regulating sheets, fan casings, bypass casings and the like).
The service environment of the resin composite material for the aircraft engine is usually single-sided or partially heated and is often accompanied by hot airflow scouring, most researchers only put the material into a damp-heat and high-low temperature environment box for material environment adaptability examination at present, the mode only considers the damage behavior of the material under single uniform high-low temperature, damp-heat and ultraviolet environment or uniform alternating environment, the damage behavior of the material under single-sided or partially heated, especially under the action of single-sided hot airflow, cannot be really reflected, and practical researches find that the damage form of the material under the action of thermal expansion and cold contraction, internal force and the like is greatly different from the uniform heated environment.
In conclusion, the resin-based composite material damage testing system with the single-side hot air effect is developed, and meanwhile, the change rule of parameters such as the temperature, the strain and the like of the heating surface and the back surface of the material under the action of air flow load can be acquired, so that the system has very important significance for researching the damage behavior and the failure mechanism of the material under the single-side and local heating environments and the safe service of a material member.
Disclosure of Invention
The invention aims to provide a test system for simulating the single-side thermal damage of a resin-based composite material, and the test system can be used for acquiring the change rule of parameters such as the temperature, the strain and the like of the heated surface and the back surface of the material under the action of airflow load, so that the technical problem in the background technology can be effectively solved.
In order to achieve the purpose, the invention provides the following technical scheme:
a test system for simulating one-sided thermal damage of a resin-based composite material comprises:
a gas flow loading mechanism for delivering an inert gas;
the input end of the gas flow processing mechanism is connected with the output end of the gas flow loading mechanism and is used for realizing inert gas heating or refrigerating;
the input end of the closed clamping mechanism is connected with the output end of the airflow processing mechanism and is used for fixing a sample and forming a closed environment;
the detection unit is arranged on the sample and used for acquiring temperature data and pressure data; and
and the data collector is arranged on the closed clamping mechanism, electrically connected with the detection unit and used for receiving the temperature data and the pressure data.
As a preferable aspect of the present invention, the airflow loading mechanism includes:
a bottle body filled with an inert gas;
a pipe-A, one end of which is connected and communicated with the top of the bottle body; and
and the pressure reducing valve-A is arranged on the pipeline-A and is used for adjusting the air supply flow and the air pressure.
As a preferable aspect of the present invention, the gas flow processing mechanism includes:
and the heating system is used for realizing inert gas heating.
As a preferable aspect of the present invention, the heating system includes:
the other end of the pipeline-A is connected and communicated with one side end part of the heating chamber;
two groups of heating wires are symmetrically arranged on the inner walls of the two sides of the heating chamber and used for realizing inert gas heating;
the temperature controller-A is arranged on the heating chamber and is electrically connected with the heating wire and the data acquisition unit so as to automatically adjust the heating temperature;
a duct-C provided at the other end of the heating chamber and communicating therewith; and
and the pressure reducing valve-C is arranged on the pipeline-C and is used for adjusting the air supply flow and the air pressure.
As a preferable aspect of the present invention, the gas flow processing mechanism includes:
and the refrigerating system is used for realizing inert gas refrigeration.
As a preferable aspect of the present invention, the refrigeration system includes:
the other end of the pipeline-A is connected and communicated with the end part of one side of the refrigerating chamber;
the air compressor is arranged on the inner wall of one side of the refrigerating chamber and is used for realizing inert gas refrigeration;
the temperature controller-B is arranged on the refrigerating chamber and is electrically connected with the air compressor and the data acquisition unit so as to automatically adjust the refrigerating temperature;
one end of the pipeline-D is connected and communicated with the end part of the other side of the refrigeration chamber; and
and the pressure reducing valve-D is arranged on the pipeline-D and is used for adjusting the air supply flow and the air pressure.
As a preferable aspect of the present invention, the present invention further includes:
the shower nozzle is located airflow treatment mechanism output, it is just to setting up with the sample one side, and it is used for spraying the inert gas after heating or refrigeration, wherein:
when the airflow processing mechanism is a heating system, the spray head is arranged at the other end of the pipeline-C;
when the airflow processing mechanism is a refrigerating system, the spray head is arranged at the other end of the pipeline-D.
As a preferable aspect of the present invention, the airtight holding mechanism includes:
heat preservation and pressure preservation chamber, wherein:
when the gas flow processing mechanism is a heating system, the pipeline-C penetrates through the heat-preservation and pressure-preservation chamber and extends inwards;
when the airflow processing mechanism is a refrigerating system, the pipeline-D penetrates through the heat-preservation and pressure-preservation chamber and extends inwards;
the sealing block can movably seal one side end part of the heat preservation and pressure maintaining chamber to form a closed environment;
the airflow discharge channel is arranged at the bottom of the heat-preservation and pressure-preservation chamber, is communicated with the heat-preservation and pressure-preservation chamber and is provided with a discharge valve for realizing opening and closing; and
and the clamping component is arranged in the heat and pressure preservation chamber and is used for fixing the sample.
As a preferable aspect of the present invention, the airflow loading mechanism further includes:
a pipe-B, one end of which is connected and communicated with the bottom of the bottle body; and
the pressure reducing valve-B is arranged on the pipeline-B and is used for adjusting the air supply flow and the air pressure;
the gas flow treatment mechanism includes:
the input end of the heating system is connected with the other end of the pipeline-A, and the heating system is used for realizing inert gas heating; and
and the input end of the refrigerating system is connected with the other end of the pipeline-B and is used for realizing inert gas refrigeration, wherein:
the heating system and the refrigerating system are arranged in parallel.
As a preferable aspect of the present invention, the heating system includes:
the other end of the pipeline-A is connected and communicated with one side end part of the heating chamber;
two groups of heating wires are symmetrically arranged on the inner walls of the two sides of the heating chamber and used for realizing inert gas heating;
the temperature controller-A is arranged on the heating chamber and is electrically connected with the heating wire and the data acquisition unit so as to automatically adjust the heating temperature;
a duct-C provided at the other end of the heating chamber and communicating therewith; and
the pressure reducing valve-C is arranged on the pipeline-C and is used for adjusting the air supply flow and the air pressure;
the refrigeration system includes:
the other end of the pipeline-B is connected and communicated with the end part of one side of the refrigerating chamber;
the air compressor is arranged on the inner wall of one side of the refrigerating chamber and is used for realizing inert gas refrigeration;
the temperature controller-B is arranged on the refrigerating chamber and is electrically connected with the air compressor and the data acquisition unit so as to automatically adjust the refrigerating temperature;
one end of the pipeline-D is connected and communicated with the end part of the other side of the refrigeration chamber, the other end of the pipeline-D is connected and communicated with the pipeline-C, and the pressure reducing valve-C is positioned on the front side of the connection part of the pipeline-D and the pipeline-C; and
and the pressure reducing valve-D is arranged on the pipeline-D and is used for adjusting the air supply flow and the air pressure.
As a preferable aspect of the present invention, the detection unit includes:
the temperature sensor-A is arranged at one side end part of the sample;
the pressure sensor is arranged at one side end part of the sample and is positioned on the same horizontal plane with the temperature sensor-A; and
and a temperature sensor-B provided on the other end of the sample and facing the temperature sensor-A.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention can carry out quantitative high/low temperature thermal damage, quantitative single-side and local airflow thermal damage, single-side cold-heat circulation/cold-heat impact damage on the resin-based composite material, can also accurately measure the dynamic change of the resin-based composite material in parameters such as temperature, strain, heat conductivity coefficient and the like, has simple and convenient system structure, stable and reliable operation and good control effect on temperature and heat flow.
(2) The system can meet the test requirements of different airflow loads from room temperature to 500 ℃, provides an effective test method for revealing damage modes and failure mechanisms of the resin-based composite material in single-sided high/low temperature and single-sided airflow thermal environments, provides a reliable technical means for service environment assessment of composite material components such as aircraft engine casings, thermal regulating sheets, blades and the like, and has very important application value.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a perspective view of a test system for simulating single-sided thermal damage of a resin-based composite material according to example 1 of the present invention;
FIG. 2 is a perspective sectional view of the test system for simulating single-sided thermal damage of a resin-based composite material according to embodiment 1 of the invention;
FIG. 3 is a top sectional view of example 1 of a test system for simulating single-sided thermal damage of a resin-based composite material according to the present invention;
FIG. 4 is an enlarged view of the point A in FIG. 3 of a test system for simulating single-sided thermal damage of a resin-based composite material according to the present invention;
FIG. 5 is a perspective sectional view of the test system for simulating single-sided thermal damage of a resin-based composite material in accordance with embodiment 2 of the present invention;
FIG. 6 is a perspective view of the test system for simulating single-sided thermal damage of a resin-based composite material according to the embodiment 3 of the invention;
FIG. 7 is a perspective sectional view of the test system for simulating single-sided thermal damage of a resin-based composite material according to example 3 of the present invention.
In the figure:
1. an airflow loading mechanism; 101. a bottle body; 102. -a pipe-a; 103. a pressure reducing valve-A; 104. -a conduit-B; 105. a pressure reducing valve-B;
2. an air flow treatment mechanism; 201. a heating chamber; 202. a heating wire; 203. a temperature controller-A; 204. -a conduit-C; 205. pressure reducing valve-C; 206. a refrigeration compartment; 207. an air compressor; 208. a temperature controller-B; 209. -a conduit-D; 2010. a pressure reducing valve-D;
3. a closed clamping mechanism; 301. a heat preservation and pressure preservation chamber; 302. a sealing block; 303. a base plate; 304. a side plate; 305. fastening a bolt; 306. an air flow discharge passage;
4. a data acquisition unit;
5. a spray head;
6. a sample;
7. temperature sensor-a;
8. a pressure sensor;
9. temperature sensor-B;
10. a pressure strain gauge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Example 1:
the invention provides the following technical scheme:
referring to fig. 1, a test system for simulating single-sided thermal damage of a resin-based composite material is composed of an airflow loading mechanism 1, an airflow processing mechanism 2, a closed clamping mechanism 3, a detection unit and a data acquisition unit 4, wherein the airflow processing mechanism 2 in this embodiment is a heating system, and then high-temperature environmental damage simulation is performed on a sample 6, which is specifically described as follows:
referring to fig. 2, the airflow loading mechanism 1 includes a bottle 101, a pipeline-a 102 and a pressure reducing valve-a 103, specifically, the bottle 101 is filled with an inert gas, the inert gas may provide other inert gases such as high purity helium, high purity neon, high purity argon and the like according to actual needs, one end of the bottle 101 is connected and communicated with the top of the bottle 101 for further conveying the inert gas, the pressure reducing valve-a 103 is installed on the pipeline-a 102 to adjust the flow rate and pressure of the supplied air, the pressure reducing valve-a 103 is opened, and the inert gas is conveyed through the pipeline-a 102; the pressure reducing valve-A103 is closed, and the inert gas cannot be conveyed;
referring to fig. 2, the heating system comprises a heating chamber 201, a heating wire 202, a temperature controller-a 203, a pipeline-C204 and a pressure reducing valve-C205, specifically, the other end of the pipeline-a 102 is connected and communicated with one side end of the heating chamber 201, the inert gas is delivered into the heating chamber 201 through the pipeline-a 102 for further heating treatment, two groups of heating wires 202 are symmetrically fixed on the inner walls of the two sides of the heating chamber 201 to realize inert gas heating, the heating is realized through the heating wire 202, the temperature controller-a 203 is fixed on the top of the heating chamber 201 and is electrically connected with the heating wire 202 and the data collector 4 to automatically adjust the heating temperature, specifically: the temperature data collected by the data collector 4 is utilized, then the data collector 4 automatically adjusts the heating set temperature of the temperature controller-A203, finally the temperature is heated by the heating wire 202 and adjusted to the temperature required by high-temperature environment damage simulation, one end of the pipeline-C204 and the end part of the other side of the heating chamber 201 are communicated with a pressure reducing valve-C205 and are arranged on the pipeline-C204 so as to adjust the gas supply flow and the gas pressure, the pressure reducing valve-C205 is opened, and the heated inert gas is conveyed by the pipeline-C204; the relief valve-C205 is closed and the delivery can be disconnected;
referring to fig. 2 again, a nozzle 5 is fixed at the other end of the pipeline-C204, and is disposed opposite to the sample 6, and is used for injecting the heated or cooled inert gas, and the heated inert gas is uniformly sprayed out through the nozzle 5, and the spraying area can be enlarged at the same time, preferably, the nozzle 5 can be selected to have a conical, flat or other shape structure according to the requirement of implementation;
referring to fig. 2, 3 and 4, the sealing and clamping mechanism 3 is composed of a heat-preserving and pressure-preserving chamber 301, a sealing block 302, an airflow discharging channel 306 and a clamping assembly, specifically, the pipeline-C204 penetrates through the heat-preserving and pressure-preserving chamber 301 and extends inwards, that is, a part of the pipeline-C204 and the nozzle 5 are located in the heat-preserving and pressure-preserving chamber 301, the sealing block 302 movably seals one side end of the heat-preserving and pressure-preserving chamber 301 to form a sealing environment, correspondingly, one side end of the heat-preserving and pressure-preserving chamber 301 is open, and then the sealing block 302 is used for sealing, preferably, a sealing rubber ring is arranged on the sealing block 302 to improve the sealing performance, the sealing block 302 is sealed in a plugging and pulling manner, the airflow discharging channel 306 is fixed at the bottom of the heat-preserving and pressure-preserving chamber 301 and communicated with the same, and provided with a discharging valve to open and close the same, the airflow discharging channel 306 is used for discharging the exhaust gas, and the clamping assembly is arranged in the heat-preserving and pressure-preserving chamber 301 to fix the sample 6;
referring to fig. 4, this embodiment illustrates a structure of a clamping assembly, specifically, the clamping assembly includes a bottom plate 303, side plates 304 and fastening bolts 305, the bottom plate 303 is fixed on the bottom wall of the thermal insulation and pressure retention chamber 301, the side plates 304 are provided with two and symmetrically fixed on the top of the bottom plate 303, the fastening bolts 305 are connected to the two side plates 304 by threads, when the sample 6 is mounted and fixed, the sample 6 is placed on the bottom plate 303, and simultaneously one surface to be tested of the sample is arranged opposite to the nozzle 5, and the other surface of the sample is close to the surface of the thermal insulation and pressure retention chamber 301 which is open to the thermal insulation and pressure retention chamber 301 as much as possible, when the upper sealing block 302 is sealed, the sample 6 can be attached to the sealing block 302, and then the two fastening bolts 305 are adjusted by rotation, and finally the sample 6 is fixed, correspondingly, when the sample 6 needs to be dismounted, only the fastening bolts 305 need to be adjusted by rotation in the opposite direction, which it needs to be described that: the clamping assembly includes, but is not limited to, the above embodiments;
with reference to fig. 4, the detecting unit is composed of a temperature sensor-A7, a pressure sensor 8 and a temperature sensor-B9, specifically, after the sample 6 is fixed, the temperature sensor-A7 and the pressure sensor 8 are fixed on one side of the sample 6 facing the nozzle 5, then the temperature sensor-B9 is fixed on the other side of the sample 6, the temperature sensor-A7 and the temperature sensor-B9 collect the temperature data (i.e. the measured air flow temperature) and the pressure data (i.e. the measured flow rate and the pressure load of the hot air flow) of one side of the sample 6, the temperature sensor-B9 collects the temperature data of the other side of the sample 6, and the heat insulation and heat conduction performance of the sample 6 can be obtained by the temperature measurement of the two sides, preferably, a pressure strain gauge 10 can be bonded on the other side of the sample 6, so as to dynamically monitor the deformation of the sample 6 during the simulation of the high temperature environment damage;
referring to fig. 4 finally, the data collector 4 is fixed on the top of the heat-preserving and pressure-preserving chamber 301, the top of the heat-preserving and pressure-preserving chamber 301 is provided with corresponding wire holes, the temperature sensor-A7, the pressure sensor 8, the temperature sensor-B9 and the pressure strain gauge 10 are electrically connected with the data collector 4 through corresponding cables, and then transmit collected data, the temperature controller-a 203 is electrically connected with the data collector 4 through a cable, the data collector 4 automatically controls the temperature controller-a 203 based on the temperature data collected by the temperature sensor-A7, and then adjusts the heating temperature of the heating wire 202, and finally adjusts the temperature to the required temperature;
the working principle or working process of the embodiment is as follows:
s1, disassembling a sealing block 302, fixing a sample 6 by adopting a clamping assembly, fixing a temperature sensor-A7 and a pressure sensor 8 on one surface of the sample 6 facing to a spray head 5, fixing a temperature sensor-B9 and a pressure strain gauge 10 on the other surface of the sample 6, and assembling the sealing block 302 to form a closed environment in a heat-preservation pressure-preservation chamber 301;
s2, opening a pressure reducing valve-A103, conveying the inert gas in the bottle body 101 into a heating chamber 201 through a pipeline-A102, controlling the heating temperature of a heating wire 202 through a temperature controller-A203, and then heating the inert gas;
s3, opening a pressure reducing valve-C205 and an exhaust valve, conveying the heated inert gas to a spray head 5 through a pipeline-C204, then spraying the inert gas outwards from the spray head 5, performing high-temperature environmental damage simulation on one surface of a sample 6 by the heated inert gas, discharging waste gas through an airflow discharge channel 306 to keep a constant pressure state, feeding temperature data acquired by a temperature sensor-A7 back into a data acquisition device 4 in the process, then automatically controlling a temperature controller-A203 to adjust the temperature by the data acquisition device 4 based on preset temperature, changing the heating temperature through a heating wire 202, and finally automatically revising the heating temperature to the required temperature;
and S4, after the specified time is reached, closing the data acquisition unit 4, the temperature controller-A203, the pressure reducing valve-C205 and the exhaust valve, taking out the sample 6 after the sample is cooled to room temperature, and then carrying out appearance observation, physical and chemical analysis and mechanical property test, finally analyzing the damage degree of the sample and obtaining a result.
Example 2:
referring to fig. 5, in embodiment 1, a high-temperature environmental damage simulation is performed on a sample 6, and in embodiment 2, a low-temperature environmental damage simulation is performed on the sample 6, and correspondingly, the airflow processing mechanism 2 in this embodiment employs a refrigeration system, where the refrigeration system is composed of a refrigeration chamber 206, an air compressor 207, a temperature controller-B208, a pipeline-D209, and a pressure reducing valve-D2010, and compared with embodiment 1, in this embodiment, the refrigeration chamber 206 is used to replace a heating chamber 201, the air compressor 207 is used to replace a heating wire 202, the temperature controller-B208 is used to replace a temperature controller-a 203, the pipeline-D209 is used to replace a pipeline-C204, and the pressure reducing valve-D2010 is used to replace a pressure reducing valve-C205, and the connection manner and the installation position correspond to embodiment 1, and are different from embodiment 1: the air compressor 207 is provided only one for cooling;
it should be noted that: the working principle of this embodiment is similar to that of embodiment 1, and embodiment 1 performs a heating process, and embodiment 2 performs a cooling process, so the working principle will not be described in detail.
Example 3:
referring to fig. 6 and 7, the heating system and the refrigeration system in embodiments 1 and 2 both exist separately, and when performing high temperature environment damage simulation or low temperature environment damage simulation, two sets of corresponding devices are required, and the occupied space of the two sets of devices is large, and embodiment 3 is further optimized on the basis of embodiment 1, and the heating system and the refrigeration system are integrated to form the present embodiment, which is specifically set forth as follows:
referring to fig. 7, the heating system is as described in example 1, which is not modified;
referring to fig. 7, the airflow loading mechanism 1 of the present embodiment is additionally provided and further includes a pipeline-B104 and a pressure reducing valve-B105, wherein one end of the pipeline-B104 is connected and communicated with the bottom of the bottle 101, and the pressure reducing valve-B105 is installed on the pipeline-B104 to adjust the air supply flow and the air pressure;
referring to fig. 7 again, the refrigeration system in this embodiment has the same structure as that in embodiment 2, but the connection manner is different from that in embodiment 2, specifically, the other end of the pipeline-B104 is connected and communicated with one end of the refrigeration chamber 206, the air compressor 207 is fixed on the inner wall of one side of the refrigeration chamber 206 to realize inert gas refrigeration, the temperature controller-B208 is fixed on the refrigeration chamber 206, and is electrically connected with the air compressor 207 and the data collector 4 to automatically adjust the refrigeration temperature, one end of the pipeline-D209 is connected and communicated with the end of the other side of the refrigeration chamber 206, the other end of the pipeline-D209 is connected and communicated with the pipeline-C204, the pressure reducing valve-C205 is located at the front side of the connection between the pipeline-D209 and the pipeline-C204, the pressure reducing valve-D2010 is installed on the pipeline-D209 to adjust the air supply flow and the air pressure, and the heating system in this embodiment is connected in parallel with the refrigeration system;
in the embodiment, when the high-temperature environment simulation damage is performed, the pressure reducing valve-B105 and the pressure reducing valve-D2010 are always in a closed state;
in the embodiment, when low-temperature environment simulation damage is carried out, the pressure reducing valve-A103 and the pressure reducing valve-C205 are always in a closed state;
it should be noted that: sample 6 in examples 1-3 used a resin-based composite material;
the invention can carry out quantitative high/low temperature heat damage, quantitative single-side and local airflow heat damage, single-side cold-heat circulation/cold-heat shock damage on the resin-based composite material, can also accurately measure the dynamic change of the parameters of the resin-based composite material such as temperature, strain, heat conductivity coefficient and the like, has simple and convenient system structure, stable and reliable operation and good control effect on temperature and heat flow;
the system can meet the test requirements of different airflow loads from room temperature to 500 ℃, provides an effective test method for revealing damage modes and failure mechanisms of the resin-based composite material in single-sided high/low temperature and single-sided airflow thermal environments, provides a reliable technical means for service environment assessment of composite material components such as aircraft engine casings, thermal regulating sheets, blades and the like, and has very important application value;
finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A test system for simulating single-sided thermal damage of a resin-based composite material is characterized by comprising:
a gas flow loading mechanism (1) for delivering an inert gas;
the input end of the gas flow processing mechanism (2) is connected with the output end of the gas flow loading mechanism (1) and is used for realizing inert gas heating or refrigerating;
the input end of the closed clamping mechanism (3) is connected with the output end of the airflow processing mechanism (2) and is used for fixing the sample (6) and forming a closed environment;
the detection unit is arranged on the sample (6) and is used for acquiring temperature data and pressure data; and
and the data collector (4) is arranged on the closed clamping mechanism (3), is electrically connected with the detection unit and is used for receiving the temperature data and the pressure data.
2. A test system for simulating single-sided thermal damage of a resin-based composite material according to claim 1, wherein the airflow loading mechanism (1) comprises:
a bottle (101) filled with an inert gas;
a pipe-A (102) one end of which is connected and communicated with the top of the bottle body (101); and
and the pressure reducing valve-A (103) is arranged on the pipeline-A (102) and is used for adjusting the air supply flow and the air pressure.
3. A test system for simulating single-sided thermal damage of a resin-based composite material according to claim 2, wherein the airflow handling mechanism (2) comprises:
and the heating system is used for realizing inert gas heating.
4. A test system for simulating one-sided thermal damage of a resin-based composite material according to claim 3, wherein the heating system comprises:
the other end of the pipeline-A (102) is connected and communicated with one side end of the heating chamber (201);
two groups of heating wires (202) are symmetrically arranged on the inner walls of the two sides of the heating chamber (201) and used for realizing inert gas heating;
the temperature controller-A (203) is arranged on the heating chamber (201) and is electrically connected with the heating wire (202) and the data collector (4) to automatically adjust the heating temperature;
a duct-C (204) provided at the other end of the heating chamber (201) and communicating therewith; and
a pressure reducing valve-C (205) provided on the conduit-C (204) for regulating the supply air flow and the air pressure.
5. A test system for simulating single-sided thermal damage of a resin-based composite material according to claim 2, wherein the airflow handling mechanism (2) comprises:
and the refrigerating system is used for realizing inert gas refrigeration.
6. The system of claim 5, wherein the refrigeration system comprises:
the other end of the pipeline-A (102) is connected and communicated with one side end part of the refrigerating chamber (206);
the air compressor (207) is arranged on the inner wall of one side of the refrigerating chamber (206) and is used for realizing inert gas refrigeration;
the temperature controller-B (208) is arranged on the refrigerating chamber (206) and is electrically connected with the air compressor (207) and the data collector (4) to automatically adjust the refrigerating temperature;
a duct-D (209) having one end connected to and communicating with the other end of the refrigeration chamber (206); and
and the pressure reducing valve-D (2010) is arranged on the pipeline-D (209) and is used for adjusting the air supply flow and the air pressure.
7. The system for simulating one-sided thermal damage of the resin-based composite material as claimed in claim 3 or 5, further comprising:
shower nozzle (5), locate airflow treatment mechanism (2) output, it is just right setting with sample (6) one side, and it is used for spraying the inert gas after heating or refrigeration, wherein:
when the airflow processing mechanism (2) is a heating system, the spray head (5) is arranged at the other end of the pipeline-C (204);
when the airflow processing mechanism (2) is a refrigerating system, the spray head (5) is arranged at the other end of the pipeline-D (209).
8. A test system for simulating single-sided thermal damage of resin-based composite materials according to claim 7, wherein the closed clamping mechanism (3) comprises:
a heat and pressure preserving chamber (301), wherein:
when the gas stream treatment means (2) is a heating system, the conduit-C (204) extends through the insulated and pressure-maintaining chamber (301) and inwardly;
when the gas flow treatment device (2) is a refrigeration system, the pipeline-D (209) penetrates through the heat-preservation and pressure-preservation chamber (301) and extends inwards;
a sealing block (302) which can movably seal one side end part of the heat-preservation and pressure-preservation chamber (301) to form a closed environment;
the airflow discharge channel (306) is arranged at the bottom of the heat-preservation and pressure-preservation chamber (301), is communicated with the heat-preservation and pressure-preservation chamber, and is provided with a discharge valve to realize opening and closing; and
and the clamping assembly is arranged in the heat-preservation and pressure-preservation chamber (301) and is used for fixing the sample (6).
9. A test system for simulating single-sided thermal damage of a resin-based composite material according to claim 2, the airflow loading mechanism (1) further comprising:
a pipe-B (104) one end of which is connected and communicated with the bottom of the bottle body (101); and
a pressure reducing valve-B (105) arranged on the pipeline-B (104) and used for adjusting the air supply flow and the air pressure;
the gas flow treatment means (2) comprises:
the input end of the heating system is connected with the other end of the pipeline-A (102) and is used for realizing inert gas heating; and
a refrigeration system, the input end of which is connected to the other end of the pipeline-B (104), for effecting inert gas refrigeration, wherein:
the heating system and the refrigerating system are arranged in parallel.
10. A test system for simulating one-sided thermal damage of a resin-based composite material according to claim 9, the heating system comprising:
the other end of the pipeline-A (102) is connected and communicated with one side end part of the heating chamber (201);
two groups of heating wires (202) are symmetrically arranged on the inner walls of the two sides of the heating chamber (201) and used for realizing inert gas heating;
the temperature controller-A (203) is arranged on the heating chamber (201) and is electrically connected with the heating wire (202) and the data collector (4) to automatically adjust the heating temperature;
a duct-C (204) provided at the other end of the heating chamber (201) and communicating therewith; and
a pressure reducing valve-C (205) provided on the pipe-C (204) for adjusting the supply air flow and the air pressure;
the refrigeration system includes:
the other end of the pipeline-B (104) is connected and communicated with one side end part of the refrigeration chamber (206);
the air compressor (207) is arranged on the inner wall of one side of the refrigerating chamber (206) and is used for realizing inert gas refrigeration;
the temperature controller-B (208) is arranged on the refrigerating chamber (206) and is electrically connected with the air compressor (207) and the data collector (4) to automatically adjust the refrigerating temperature;
a pipeline-D (209) having one end connected to and communicating with the other end of the refrigeration chamber (206) and the other end connected to and communicating with the pipeline-C (204), the pressure reducing valve-C (205) being located on the front side of the connection between the pipeline-D (209) and the pipeline-C (204); and
and the pressure reducing valve-D (2010) is arranged on the pipeline-D (209) and is used for adjusting the air supply flow and the air pressure.
11. The system of claim 1, wherein the detection unit comprises:
a temperature sensor-A (7) provided at one end of the sample (6);
a pressure sensor (8) which is provided at one end of the sample (6) and is located on the same horizontal plane as the temperature sensor-A (7); and
and a temperature sensor-B (9) provided at the other end of the sample (6) and disposed opposite to the temperature sensor-A (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210857830.0A CN115235913A (en) | 2022-07-20 | 2022-07-20 | Test system for simulating single-sided thermal damage of resin-based composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210857830.0A CN115235913A (en) | 2022-07-20 | 2022-07-20 | Test system for simulating single-sided thermal damage of resin-based composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115235913A true CN115235913A (en) | 2022-10-25 |
Family
ID=83672840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210857830.0A Pending CN115235913A (en) | 2022-07-20 | 2022-07-20 | Test system for simulating single-sided thermal damage of resin-based composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115235913A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117607200A (en) * | 2023-11-09 | 2024-02-27 | 南京大学 | Soil nail defect parameter detection device and method based on active heating optical fiber sensing |
-
2022
- 2022-07-20 CN CN202210857830.0A patent/CN115235913A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117607200A (en) * | 2023-11-09 | 2024-02-27 | 南京大学 | Soil nail defect parameter detection device and method based on active heating optical fiber sensing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115235913A (en) | Test system for simulating single-sided thermal damage of resin-based composite material | |
| CN107138183A (en) | Can subregion multi-process high-low temperature test chamber | |
| CN102288634A (en) | Thermal property measuring device | |
| CN110501123B (en) | Seal gasket capability test device under high pressure and low temperature environment | |
| CN206399746U (en) | A kind of high-low temperature test chamber tested for PR2 gate valves and casing head | |
| CN112129810A (en) | Contact thermal resistance test system with variable pressure and temperature in deep low temperature region | |
| CN105044142B (en) | A kind of controllable material thermophysical property measurement system of wide warm area | |
| CN103691500B (en) | A kind of controlled flexible cavity high/low temperature environmental simulation system | |
| CN106896140A (en) | A kind of fatigue at low temperatures crack growth rate experimental rig and its application method | |
| CN107036777A (en) | Fastener high/low temperature oscillation crosswise testing machine | |
| CN114813156A (en) | High-altitude test bed cold-hot immersion test device and method for turboshaft engine | |
| CN206876370U (en) | Fastener high/low temperature oscillation crosswise testing machine | |
| CN111420717A (en) | High-low temperature test box capable of changing temperature rapidly and used for dual-temperature-zone thermal mechanical fatigue test | |
| CN110231843A (en) | A kind of temperature, pressure air-supply comprehensive experimental device and method for aircraft electronic equipment | |
| CN112611552B (en) | Aeroengine high temperature high altitude ventilation valve test device | |
| CN117191407A (en) | Special environment simulation experiment cabin for engine test | |
| CN107991091A (en) | A kind of split type industrial robot gear reducer high-low temperature tester | |
| CN110672658A (en) | Block porous material heat insulation performance test experiment system and test method suitable for large temperature difference and variable pressure conditions | |
| CN115979835A (en) | Temperature-controlled pneumatic pressure gauge and measuring method | |
| CN212008253U (en) | Full-automatic flow cytometry | |
| CN219996515U (en) | Environment simulation experiment cabin for engine test | |
| CN113702428A (en) | Wide-temperature-zone equivalent thermal conductivity and contact thermal resistance measuring system with force loading | |
| CN113406474A (en) | Electronic element online high-low temperature detection device, high-low temperature test socket and chip high-low temperature test method | |
| CN112098468A (en) | Experimental method and experimental device for liquid nitrogen soaking pressure resistance of high-temperature superconducting strip | |
| CN117740878B (en) | Quick temperature change test box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |