KR101682309B1 - Defect evaluation apparatus of the composite materials - Google Patents
Defect evaluation apparatus of the composite materials Download PDFInfo
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- KR101682309B1 KR101682309B1 KR1020150107158A KR20150107158A KR101682309B1 KR 101682309 B1 KR101682309 B1 KR 101682309B1 KR 1020150107158 A KR1020150107158 A KR 1020150107158A KR 20150107158 A KR20150107158 A KR 20150107158A KR 101682309 B1 KR101682309 B1 KR 101682309B1
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- 239000002131 composite material Substances 0.000 title claims abstract description 158
- 230000007547 defect Effects 0.000 title claims abstract description 51
- 238000011156 evaluation Methods 0.000 title abstract description 19
- 229920000642 polymer Polymers 0.000 claims abstract description 62
- 239000012779 reinforcing material Substances 0.000 claims abstract description 42
- 238000001931 thermography Methods 0.000 claims abstract description 33
- 238000004458 analytical method Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000000465 moulding Methods 0.000 claims abstract description 24
- 230000002950 deficient Effects 0.000 claims abstract description 5
- 230000002787 reinforcement Effects 0.000 claims description 28
- 239000006185 dispersion Substances 0.000 claims description 26
- 239000003054 catalyst Substances 0.000 claims description 24
- 239000011148 porous material Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 239000002952 polymeric resin Substances 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 239000005078 molybdenum compound Substances 0.000 claims description 4
- 150000002752 molybdenum compounds Chemical class 0.000 claims description 4
- 150000003304 ruthenium compounds Chemical class 0.000 claims description 4
- 150000003658 tungsten compounds Chemical class 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 abstract description 38
- 230000000704 physical effect Effects 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 150000003282 rhenium compounds Chemical class 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 235000019739 Dicalciumphosphate Nutrition 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- NEFBYIFKOOEVPA-UHFFFAOYSA-K dicalcium phosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])([O-])=O NEFBYIFKOOEVPA-UHFFFAOYSA-K 0.000 description 1
- 229940038472 dicalcium phosphate Drugs 0.000 description 1
- 229910000390 dicalcium phosphate Inorganic materials 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/06—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
- C08F4/22—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of chromium, molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
-
- 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
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Immunology (AREA)
- Polymers & Plastics (AREA)
- General Health & Medical Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention relates to a thermal imaging camera for photographing a composite material molded through polymer polymerization immediately after molding to obtain an overall temperature of the composite material; And an analysis module that receives a total temperature of the composite material from the thermal imaging camera and determines a temperature part included in a reference temperature range that is set in comparison with a preset reference temperature range for determining whether the combined material is a defective part, A defect evaluation apparatus for a composite material molded through polymerization is provided.
According to the embodiment of the present invention, the composite material immediately after molding is photographed using a thermal camera, the difference in the temperature appearing in the thermal image of the composite material is analyzed to evaluate whether or not the interior is bonded, , It is possible to easily evaluate the physical properties of the composite material in each section. In addition, since it is possible to immediately analyze the defectiveness and physical properties immediately after molding of the composite material, the manufacturing time can be shortened, and the dispersibility of the reinforcing material can be analyzed easily and quickly, which enables the rapid commercialization of the polymer composite material have. In addition, when applied to molding equipment in the future, basic data for modeling the molding state of the composite material can be obtained. Further, since the thermal imaging camera is used, the evaluation cost can be reduced, and the marketability and merchantability are improved.
Description
The present invention relates to a defect evaluating apparatus for a composite material molded by polymer polymerization, and more particularly, to a defect evaluating apparatus for a composite material molded through polymeric polymerization, by analyzing the state of polymer polymerization, evaluating defectiveness and physical properties, To a defect evaluation apparatus for a composite material formed through polymer polymerization capable of analyzing the degree of dispersion of a reinforcing material.
In general, when a polymer is polymerized using a catalyst, the reaction of the catalyst does not occur in the first half of the polymer specimen, but the polymerization is attempted exponentially in a part of the specimen. Therefore, There is a problem that appears differently.
In addition, when the reinforcing material is mixed with the inside of the polymer to improve the physical properties of the polymer, the stable dispersion state of the reinforcing material must be confirmed so that the polymer composite material can be commercialized.
Conventionally, in order to confirm the dispersion state of the reinforcing material, evaluation was carried out by using an expensive FE-SEM (scanning electron microscope). However, such evaluation has a problem in that a professional manpower is required, resulting in an increase in evaluation cost.
In addition, since the use of composite materials has been expanded not only in aircraft but also in vehicles and everyday life areas, there is a desperate need for a defect evaluation apparatus for a composite material which can be easily and accurately evaluated at low cost.
Korean Registered Patent: 10 - 1315772 (Notification date October 10, 2013)
Korean Published Patent: 10 - 2011-0075582 (Public date 2011. 07. 06)
SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems,
An object of the present invention is to provide a method of measuring the degree of polymerization of a polymer, measuring the degree of polymer bonding, analyzing the temperature difference in a thermal image of a composite material by taking a composite material immediately after molding using a thermal imaging camera, And to provide a defect evaluation apparatus for a composite material formed through polymer polymerization capable of evaluating physical properties of a material.
Another object of the present invention is to provide a method for manufacturing a composite material, which comprises mixing a reinforcing material to improve the physical properties of a polymer, measuring a composite material immediately after molding with a thermal imaging camera and measuring a difference in temperature caused by a difference between the thermal conductivity of the polymer and the thermal conductivity of the reinforcing material And evaluating the degree of dispersion of the reinforcing material and analyzing the aggregation position of the reinforcing material.
According to an embodiment of the present invention, there is provided an apparatus for evaluating defects of a composite material formed through polymer polymerization, the apparatus comprising: A thermal imaging camera for acquiring an image; And an analysis module that receives a total temperature of the composite material from the thermal imaging camera and determines a temperature part included in a reference temperature range that is set in comparison with a preset reference temperature range as a defect occurrence part, .
Wherein the reference temperature range in the analysis module is set to a temperature range that is 7% to 25% lower than the average temperature of the composite material derived from the overall temperature of the composite material.
The defects include pores and cracks, and the thermal imaging camera is characterized by taking a composite material at a distance of less than 20 cm.
Also, the composite material is characterized in that it is polymerized using a catalyst, and the catalyst includes one selected from the group consisting of a molybdenum compound, a ruthenium compound, a tungsten compound, and a combination thereof.
In addition, a reinforcement material for improving the physical properties of the polymer is further mixed in the composite material, and the analysis module compares the total temperature of the composite material transmitted from the thermal imaging camera with a predetermined reference temperature range, Is determined as the reinforcing material dispersion position.
Here, the reference temperature range of the analysis module may be determined by deriving an average temperature from the total temperature of the composite material when the thermal conductivity of the reinforcement material is lower than the thermal conductivity of the polymer material, and the temperature is 7% to 25% The range is set,
The first reference temperature range is set to a temperature range that is 7% to 25% higher than the average temperature of the composite material in order to determine the degree of dispersion of the reinforcing material when the thermal conductivity of the reinforcing material is higher than the thermal conductivity of the polymer. And a second reference temperature range set to a temperature range that is 7% to 25% lower than the average temperature of the composite material.
And a memory unit for storing an image image determined as a defect occurrence part in the analysis module.
According to the embodiment of the present invention, the composite material immediately after molding is photographed using a thermal camera, the difference in the temperature appearing in the thermal image of the composite material is analyzed to evaluate whether or not the interior is bonded, , It is possible to easily evaluate the physical properties of the composite material in each section.
In addition, since it is possible to immediately analyze the defectiveness and physical properties immediately after molding of the composite material, the manufacturing time can be shortened, and the dispersibility of the reinforcing material can be analyzed easily and quickly, which enables the rapid commercialization of the polymer composite material have.
In addition, when applied to molding equipment in the future, basic data for modeling the molding state of the composite material can be obtained.
Further, since the thermal imaging camera is used, the evaluation cost can be reduced, and the marketability and merchantability are improved.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a defect evaluation apparatus for a composite material molded through polymer polymerization according to an embodiment of the present invention. FIG.
2 is a flow chart illustrating a method for evaluating defects of a composite material molded through polymeric polymerization according to an embodiment of the present invention.
FIG. 3 is a thermally imaged image of a composite material immediately after molding by a thermal imaging camera in a defect evaluation method of a composite material molded through polymer polymerization according to an embodiment of the present invention. FIG.
FIG. 4 is an image of a pore state of a composite material in a method for evaluating defects of a composite material formed by polymer polymerization according to an embodiment of the present invention. FIG.
5 is a flowchart showing a method for evaluating defects of a composite material molded through polymer polymerization according to another embodiment of the present invention.
6 is an image of a result of analyzing the aggregate state of a reinforcing material in a method of evaluating defects of a composite material molded through polymer polymerization according to another embodiment of the present invention.
Figure 7 is an image of the result of analysis of the state of the composite material and the evaluation of the reinforcement dispersion degree.
These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a defect evaluation apparatus for a composite material formed through polymer polymerization according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. For purposes of this specification, like reference numerals in the drawings denote like elements unless otherwise indicated.
FIG. 1 is a schematic view illustrating a defect evaluation apparatus for a composite material molded through polymer polymerization according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a composite material molded through polymer polymerization according to an embodiment of the present invention. FIG. 3 is a thermal image obtained by photographing a composite material immediately after molding with a thermal imaging camera in a defect evaluation method of a composite material molded through polymer polymerization according to an embodiment of the present invention. FIG.
As shown in FIG. 1, the apparatus for evaluating defects of a composite material molded through polymer polymerization according to an embodiment of the present invention is configured to measure a defect immediately after molding of a
The
The catalyst may be any of catalysts used in polymerization of DCPD monomers as known in the art. For example, one kind of catalyst selected from a molybdenum compound, a rhenium compound, a ruthenium compound and a tungsten compound can be used, and p -DCPD resin and a combination of catalysts can be used.
The
The thermal image of the
The total temperature of the composite material photographed in the
In the
Then, the set reference temperature range is compared with the total temperature of the composite material, and a part of the temperature included in the reference temperature range is determined as the defect occurrence part from the total temperature of the composite material. Here, the defect includes internal pores and cracks, and includes a portion where polymerization does not proceed. That is, the part of the temperature included in the reference temperature range of the total temperature of the composite material is judged as the occurrence of the internal pores or cracks or the part where the polymerization is less advanced.
When pores are generated or cracks are generated in the composite material, the state and physical properties of the composite material are greatly deteriorated.
Therefore, the method of finding pores or cracks is very important for evaluating the properties of composites and the state of composites. By analyzing pores and understanding crack sites, it is possible to evaluate the properties and safety of composite materials.
In addition, a reinforcing material may be further added to the
In the case of the
Here, the reinforcing material may be a glass fiber having a thermal conductivity lower than the thermal conductivity of the polymer, or a carbon fiber and a carbonaceous reinforcement having a thermal conductivity higher than that of the polymer may be used.
The reference temperature range for determining the degree of dispersion and the degree of dispersion of the reinforcement material is set in the
That is, the reference temperature range of the
Also, the reference temperature range when the thermal conductivity of the reinforcement is higher than the thermal conductivity of the polymer is determined by deriving an average temperature over the entire temperature of the composite material transferred through the
As described above, the
In addition, it is possible to analyze the physical properties of the composite material, to confirm the strength of each region, to analyze the extent of polymer polymerization, and to confirm the existence of voids, cracks, .
The
As shown in FIG. 2, a method of evaluating defects of a composite material molded through polymer polymerization according to an embodiment of the present invention includes a step S10 of molding a composite material through polymer polymerization, A step S20 of obtaining the total temperature of the composite material by comparing the total temperature of the composite material with the reference temperature range set for determining whether the composite material is defective and judging the surface temperature part included in the reference temperature range as a defect occurrence part (S30).
First, in step S10, the
Step S20 captures the
And, as shown in Fig. 3, the thermal image of the composite material obtained through the thermal imaging camera showed high heat in a part but low heat in another part. Generally, in the composite material, the curing does not start in all the sections due to the reaction of the catalyst, and the reaction of the catalyst in the specific section is continued, so the physical properties may vary depending on the section.
Here, the total temperature of the composite material refers to the temperature including the lowest temperature to the highest temperature from one side to the other side of the composite material.
In step S30, the overall temperature of the composite material is received based on the total temperature of the composite material obtained from the thermal imaging camera, and a temperature range that is 7% to 25% lower than the total average temperature of the composite material is set as the reference temperature range do.
Then, the set reference temperature range is compared with the total temperature of the composite material, and a part of the temperature included in the reference temperature range is determined as the defect occurrence part from the total temperature of the composite material. Here, the defect includes the portion including the inner pores and the crack and not proceeding the polymerization. That is, the part of the temperature included in the reference temperature range of the total temperature of the composite material is judged as the occurrence of the internal pores or cracks or the part where the polymerization is less advanced.
Fig. 4 is a schematic diagram for analyzing pores inside the composite material. As shown in FIG. 2, when the polymer composite material is produced, the front and back surfaces of the composite material are different from each other. At this time, even if there is no influence of pores on the front surface of the composite material, a large amount of pores may be generated on the back surface. In the pore or cracked part, the heat of the material is low and the temperature is lower than the average temperature of the composite material.
When pores or cracks are generated in the interior of the composite material, the state and physical properties of the composite material are greatly degraded.
Therefore, the method of finding pores or cracks is very important for evaluating the state and properties of composite materials, and the properties and safety of composite materials can be evaluated through analysis of pores and identification of cracks.
5 is a flowchart showing a method of evaluating defects of a composite material formed through polymer polymerization according to another embodiment of the present invention.
As shown in FIG. 5, the method for evaluating defects of a composite material molded through polymer polymerization according to another embodiment of the present invention includes a step S100 of molding a composite material through polymerization of a polymer mixed with a reinforcement material, A step of comparing the total temperature of the obtained composite material with the reference temperature range set for determining whether the composite material is defective or not, And determining the portion as a defect occurrence portion and a reinforcement material dispersion position.
Here, another embodiment of the present invention is a method for evaluating the degree of dispersion of a reinforcing material mixed in a composite material, wherein a reinforcing material is further mixed to improve the physical properties of the polymer when the composite material is molded in step S10 of the embodiment It includes more.
First, the step S100 is performed in the same manner as the step S10 of the embodiment, in which a reinforcing material is mixed with the polymer resin to form a composite material.
Here, the reinforcing material may be a glass fiber having a thermal conductivity lower than the thermal conductivity of the polymer, or a carbon fiber and a carbonaceous reinforcement having a thermal conductivity higher than that of the polymer may be used.
In step S200, the entire temperature of the composite material is obtained by photographing the composite material immediately after molding using the thermal imaging camera in the same manner as step S10 of the embodiment. Here, the total temperature of the composite material refers to the temperature including the lowest temperature to the highest temperature from one side to the other side of the composite material.
Step S300 compares the total temperature of the composite material obtained from the thermal imaging camera with the reference temperature range set for determination of defectiveness and reinforcement material dispersion location.
Here, the reference temperature range is calculated by taking the total temperature of the composite material obtained from the thermal imaging camera and deriving the total average temperature of the composite material when the thermal conductivity of the reinforcement is lower than the thermal conductivity of the polymer, A temperature range of 7% to 25% lower is set.
In this case, since the temperature range in which the defect is judged is set to be 7% to 25% lower than the average temperature of the composite material as a whole, the thermal conductivity of the polymer is lower than that of the polymer, It can be analyzed at once.
For example, when the overall average temperature of the composite material is 100 占 폚, the reference temperature range is set in the range of 75 占 폚 to 93 占 폚, and the temperature portion included in the overall temperature range of the composite material in the range of 75 占 폚 to 93 占 폚 The defect occurrence portion and the reinforcing material dispersion position. Here, the distinction between the defect occurrence portion and the reinforcing material dispersion position can be classified by the size, sharpness, or shape of the temperature distribution included in the reference temperature range.
The reference temperature range when the thermal conductivity of the reinforcing material is higher than the thermal conductivity of the polymer is determined by a first reference temperature range which is set to a temperature range 7% to 25% higher than the average temperature of the composite material for determining the reinforcing material dispersion position, And a second reference temperature range, which is set to a temperature range that is 7% to 25% lower than the surface average temperature of the composite material in order to determine the temperature.
For example, when the total average temperature of the composite material is 100 占 폚, the first reference temperature range for determining the reinforcing material dispersion position is set in the range of 107 占 폚 to 125 占 폚, Is determined as the reinforcing material dispersion position. The second reference temperature range for judging defects is set to be in the range of 75 deg. C to 93 deg. C, and the temperature portion included in the range of 75 deg. C to 93 deg. will be.
Fig. 6 is an image of the result of the analysis of the aggregation state of the reinforcement, and Fig. 7 is an image of the result of the evaluation of the dispersion degree of the reinforcement and the state of the composite material.
As shown in FIG. 6, it was analyzed that the reinforcing material was aggregated at a temperature 7% to 25% higher or lower than the average temperature of the composite material. When the reinforcing material is aggregated, the shape is shown to be defective, so that the problem of the shape of the composite material can be confirmed immediately.
Also, as shown in FIG. 7, since the difference between the thermal conductivity of the reinforcement material and the thermal conductivity of the polymer differs between the reinforcement material and the dispersing material, even if the same amount of heat is received, the difference in the degree of conservation of the amount of heat is different and a temperature difference occurs. And the analysis of the reinforcement material can be performed by analyzing the position of the reinforcement material.
In addition, it is possible to analyze the physical properties of the composite material, to confirm the strength of each part, and to analyze the degree of polymer polymerization by checking the internal pores, cracks, It was.
As described above, according to the present invention, the composite material immediately after molding is photographed by using a thermal imaging camera, the temperature difference appearing in the thermal image of the composite material is analyzed to evaluate whether or not the interior is bonded, and the degree of polymer polymerization can be analyzed , It is possible to easily evaluate the physical properties of the composite material in each section.
Further, since the defect and physical properties can be directly analyzed immediately after molding of the composite material, the manufacturing time can be shortened.
In addition, the dispersibility of the reinforcing material can be easily analyzed, and the polymer composite material can be rapidly commercialized.
In addition, when applied to molding equipment in the future, it becomes possible to provide basic data for modeling the molding state of the composite material.
In addition, since the thermal imaging camera is used, the evaluation cost can be reduced, and the marketability and the merchantability can be improved.
Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims, And equivalents may be resorted to as falling within the scope of the invention.
100: mold 200: composite material
300: thermal imaging camera 400: analysis module
500: memory unit
Claims (9)
And a temperature range in which the thermal conductivity of the reinforcing material is lower than the average thermal conductivity of the polymer by 7 to 25% lower than the average temperature of the composite material, The composite material is determined as a dispersion position of the reinforcing material. When the thermal conductivity of the reinforcing material is higher than the thermal conductivity of the polymer, a temperature range of 7% to 25% higher than the average temperature of the derived composite material is determined as the dispersion position of the reinforcing material. An analysis module that analyzes the dispersion degree of the reinforcement material and the defect of the composite material by judging the temperature range 7% to 25% lower than the average temperature as the defect occurrence part; And
And a memory for storing a dispersion image and a defect image of the reinforcement material analyzed by the analysis module,
Wherein the analysis module is configured to determine the temperature distribution of the defective portion and the reinforcing material dispersed position in a size or sharpness or shape of a temperature distribution included in a temperature range that is 7% to 25% lower than the average temperature of the composite material when the thermal conductivity of the reinforcing material is lower than the thermal conductivity of the polymer. And the number of the defects of the composite material is less than the number of defects.
Wherein the defect includes any one of pore, crack, non-polymerized portion, and aggregated reinforcement material.
Wherein the total temperature of the composite material obtained in the thermal imaging camera is the total temperature of the composite material photographed at a distance of less than 20 cm from the thermal imaging camera.
Wherein the composite material is polymerized using a catalyst. ≪ RTI ID = 0.0 > 8. < / RTI >
Wherein the catalyst comprises one selected from the group consisting of a molybdenum compound, a ruthenium compound, a tungsten compound, and a combination thereof.
Wherein the reinforcing material is a glass fiber having a thermal conductivity lower than a thermal conductivity of the polymer, or a carbon fiber and a carbon-based reinforcing material having a heat conductivity higher than that of the polymer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107085007A (en) * | 2017-03-09 | 2017-08-22 | 清华大学 | Detect the device and method of one-dimensional micro-nanometer conducting material thermoelectricity performance parameter |
| CN110849929A (en) * | 2019-11-29 | 2020-02-28 | 无锡物联网创新中心有限公司 | Method for monitoring release state of sensor with suspension structure |
| KR20210124758A (en) * | 2020-04-07 | 2021-10-15 | 울산과학기술원 | quality inspection apparatus for gas injection molding products and method thereof |
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