CN103692667B - On-line system for testing resin flowing forward in composite material liquid forming process - Google Patents
On-line system for testing resin flowing forward in composite material liquid forming process Download PDFInfo
- Publication number
- CN103692667B CN103692667B CN201310643627.4A CN201310643627A CN103692667B CN 103692667 B CN103692667 B CN 103692667B CN 201310643627 A CN201310643627 A CN 201310643627A CN 103692667 B CN103692667 B CN 103692667B
- Authority
- CN
- China
- Prior art keywords
- capillary
- hole
- resin flows
- pressure
- flows forward
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Abstract
The invention discloses an on-line system for testing a resin flowing forward in a composite material liquid forming process. The on-line system comprises a pressure monitoring subsystem (1) and a pressure sensitive subsystem, wherein the pressure sensitive subsystem comprises a pressure sensitive device (2), a capillary tube A (5) and a capillary tube B (6); the capillary tube A (5) and the capillary tube B (6) are respectively arranged on the pressure sensitive device (2). The on-line system for testing the resin flowing forward in the composite material liquid forming process is matched with a vacuum mould (3) and a vacuum pump (4) in the composite material liquid forming process. The on-line system has the advantages of good accuracy, high sensitivity, low cost and the like, and can be applied to a resin film infusion forming process carried out in a hot pressing tank, thereby optimizing process conditions such as pressure and temperature.
Description
Technical field
The present invention relates to the test macro of a kind of Liquid molding techniques (LCM), more particularly, refer to the on-line system of a kind of resin flows forward for test compound marking liquid molding process.
Background technology
Composite liquid moulding process (Liquid Composites Molding, LCM) is one of nearly composite material process planning grown up for 30 years.There is the advantages such as cost is low, efficiency is high, quality is good, become the focus that various countries pay close attention to and study.Composite liquid moulding process principle is by pre-designed fibre reinforced materials lay in a mold, closed mould cavity, by in resin injection or vacuum suction die cavity, rely on the flowing wetting fibre the gas got rid of in fiber of being with pressurizing resin, the resin that is heating and curing makes composite material forming.LCM technique is a kind of important processing of polymer matrix composites method, and in forming process, the effect of impregnation of resin on fiber is the key factor affecting product quality.There is the defect such as hole, the poor glue of dry spot and local in the undesirable composite inner that easily causes of the effect of resin wetting fibre, seriously reduces product quality.Therefore in composite liquid molding process, be necessary Real-Time Monitoring resin flows forward, detect the effect of impregnation of resin to fiber with this, understand the problem timely Optimization Technology that produce in forming process, thus ensure product quality.On-line testing technique at present for resin flows forward can be divided into non-embedded and embedded two kinds.Non-embedded measuring technology has ultrasonic monitoring, thermography and shooting etc.; Embedded testing technology has the monitoring of fiber-optic monitoring, dielectric, direct current monitoring and temperature monitoring etc.Embedded testing can technique information in accurate measurements forming process, has high reliability.
As a kind of important liquid molding process, Resin Film Infusion moulding process has efficiently, performance is high, Choice of Resin is wide and the features such as flexible selected by reinforcing material.This molding process carries out usually in autoclave, the closure of autoclave and internal high temperature high pressure feature thereof cause Resin Film Infusion moulding process on-line monitoring difficulty to increase, such as closure causes camera monitoring and fiber-optic monitoring not to carry out, and HTHP feature causes temperature monitoring and pressure monitoring not to carry out.In addition, manufacture take carbon fiber as the polymer matrix composites of reinforcement time, the electric conductivity due to carbon fiber itself causes dielectric to be monitored and direct current is monitored and can not be carried out.In a word, needs are a kind of at present has high feasibility and the Online Transaction Processing of reliability, for realizing the Real-Time Monitoring to Resin Film Infusion moulding process in autoclave environment.
Summary of the invention
The invention provides a kind of can the real-time monitoring system of resin flows forward in on-line monitoring composite liquid molding process, this system analyzes the situation of resin flows by the pressure change under different time.In forming process, A capillary under different distributions position, the time that its resin arrives is different; According to the time that this resin arrives, speed and the path of resin flows can be embodied.This system has good, the highly sensitive and low cost and other advantages of accuracy, and can be applied to the Resin Film Infusion molding process carried out in autoclave, thus optimizes the process conditions such as pressure and temperature.
The present invention is the on-line system of a kind of resin flows forward for test compound marking liquid molding process, this resin flows forward Online Transaction Processing be in existing pressure monitoring subsystem (1) and composite material forming between increase presser sensor subsystem; Described pressure monitoring subsystem (1) includes a computer, and runs on-line monitoring resin flows forward module in a computer; Relation Parameters, the characteristic of the temperature demonstrated in real time by computer screen, pressure and resin flows forward, thus optimize the process conditions such as pressure and temperature.
Described presser sensor subsystem is made up of pressure sensitive device (2), A capillary (5) and B capillary (6);
A capillary (5) and B capillary (6) are arranged on pressure sensitive device (2) respectively;
Vacuum mold (3) in described resin flows forward Online Transaction Processing and composite liquid moulding process and vavuum pump (4) with the use of;
The centre of A capillary (5) is the first through hole (5A), and this first through hole (5A) is for carrying air; The inlet end (5C) of A capillary (5) is arranged in the third through-hole (2B1) of adaptor (2B), and the exhaust end (5D) of A capillary (5) is placed in processed composite product;
The centre of B capillary (6) is the second through hole (6A), and this second through hole (6A) is for carrying air; The inlet end (6C) of B capillary (6) is connected with outside charger; The exhaust end (6D) of B capillary (6) is arranged in the tube wall through hole (2D2) of hollow tube (2D) by sealing ring (2C);
Pressure sensitive device (2) is made up of pressure sensor (2A), adaptor (2B), sealing ring (2C) and hollow tube (2D); The pressure information F that described pressure sensor (2A) sensitivity arrives
npass to pressure monitoring subsystem (1);
One end of hollow tube (2D) is provided with A internal thread segment (2D3), and the other end of hollow tube (2D) is provided with B internal thread segment (2D4); The body of hollow tube (2D) is provided with fourth hole (2D2); Described A internal thread segment (2D3) is threaded the thread segment (2B2) of adaptor (2B); Described B internal thread segment (2D4) is threaded the thread segment (2A1) of pressure sensor (2A); Described fourth hole (2D2) place is sealed and installed with the exhaust end (6D) of B capillary (6) by sealing ring (2C);
Adaptor (2B) is provided with third through-hole (2B1) and thread segment (2B2); The thread segment (2B2) of adaptor (2B) is threaded in the B internal thread segment (2D4) of hollow tube (2D); Third through-hole (2B1) passes for the inlet end (5A) of A capillary (5), and the inlet end (5A) through the A capillary (5) of the third through-hole (2B1) of adaptor (2B) is placed in the cavity (2D1) of hollow tube (2D).
1. native system can carry out online resin flows forward in composite liquid molding process, in real time, multichannel monitors simultaneously.
2. native system has good reliability, accuracy, sensitivity, the requirement met on Practical Project.
3. this test macro scope of application widely, comprises resin transfer molding technique, vacuum assisted resin infusion, Resin film infusion etc., is applicable to various fiber, resin and ply sequence.
4. this cost of testing system is lower, and pressure sensor can repeatedly utilize, simple to operate, without any need for complicated or special auxiliary equipment.
5. this test macro can bear the shaping environment of HTHP, and can use under enclosed environment, namely can be applicable to the Resin film infusion carried out in autoclave.
6. this system can by the situation of change of Vacuum Pressure in vacuum tank in display forming process directly perceived, and indirect monitoring resin flows forward, detects resin thus to the effect of impregnation of fiber, thus Optimizing Process Parameters effectively, reach the target improving Forming Quality.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the Online Transaction Processing of resin flows forward of the present invention.
Fig. 2 is the structure chart of presser sensor subsystem of the present invention.
Fig. 2 A is face of the facing structure chart of presser sensor subsystem of the present invention.
Fig. 2 B is the sectional view of pressure sensitive device of the present invention.
Fig. 2 C is the exploded view of presser sensor subsystem of the present invention.
Fig. 3 is the structure chart of A capillary of the present invention.
Fig. 4 is the structure chart of B capillary of the present invention.
Fig. 5 is resin flows forward Online Transaction Processing display interface schematic diagram of the present invention.
Fig. 6 is the schematic diagram in fiber laying and resin flows direction in embodiment 1.
Fig. 7 is the schematic diagram in embodiment 2 in non-homogeneous resin flows forward on-line testing X-Y plane.
Fig. 8 is the schematic diagram in embodiment 2 in non-homogeneous resin flows forward on-line testing Z-direction.
| 1. pressure monitoring subsystem | 2. pressure sensitive device | 2A. pressure sensor |
| 2A1. thread segment | 2B. adaptor | 2B1. third through-hole |
| 2B2. thread segment | 2C. sealing ring | 2D. hollow tube |
| 2D1. cavity | 2D2. fourth hole | 2D3.A internal thread segment |
| 2D4.B internal thread segment | 3. vacuum mold | 4. vavuum pump |
| 5.A capillary | 5A. first through hole | 5B.A capillary shaft |
| 5C. inlet end | 5D. exhaust end | 6.B capillary |
| 6A. second through hole | 6B.B capillary shaft | 6C. inlet end |
| 6D. exhaust end | 7. fiber laying | 8. resin molding |
| 9. resin flows direction |
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Shown in Figure 1, the present invention is that one is applicable in composite liquid molding process, and to the Online Transaction Processing of resin flows forward, this system includes pressure monitoring subsystem 1 and presser sensor subsystem; Described presser sensor subsystem is made up of pressure sensitive device 2, A capillary 5 and B capillary 6; A capillary 5 and B capillary 6 are arranged on pressure sensitive device 2 respectively.The present invention design resin flows forward Online Transaction Processing and composite liquid moulding process in vacuum mold 3 and vavuum pump 4 with the use of.
In the present invention, vavuum pump 4 is for vacuumizing vacuum mold 3.
In the present invention, vacuum mold 3 belongs to the mould of the machining composite material product in composite liquid moulding process.
The presser sensor subsystem of the present invention's design is increased in existing vacuum assistant resin infused, composite liquid moulding process, Resin film infusion, be connected with computer interface by the responsive output of presser sensor subsystem, the A capillary 5 of presser sensor subsystem inserts in processed composite.In the forming process of the vacuum assistant resin infused of composite, composite liquid moulding process, Resin film infusion, it can be multiple for arranging presser sensor subsystem, by being numbered each presser sensor subsystem, by calculating the numbering recording each presser sensor subsystem, then observe the curve under each numbering, thus optimize the process conditions such as pressure and temperature.
(1) A capillary 5
Shown in Fig. 2, Fig. 2 A, Fig. 2 C, Fig. 3, A capillary 5 is hollow structure.The centre of A capillary 5 is first through hole 5A, and this first through hole 5A is for carrying air.The inlet end 5C of A capillary 5 is arranged in the third through-hole 2B1 of adaptor 2B, and the exhaust end 5D of A capillary 5 is placed in processed composite product.
In the present invention, the length of A capillary 5 is designated as H
5; The diameter of the first through hole 5A of A capillary 5 is designated as d
5, essence is also the internal diameter of A capillary 5; The diameter of the body 5B of A capillary 5 is designated as D
5, essence is also the external diameter of A capillary 5.Usually, H
5value is 100cm ~ 500cm, d
5value is 0.3mm ~ 1.0mm, D
5value is 0.5mm ~ 2.0mm.
(2) B capillary 6
Shown in Fig. 2, Fig. 2 A, Fig. 2 C, Fig. 4, B capillary 6 is hollow structure.The centre of B capillary 6 is second through hole 6A, and this second through hole 6A is for carrying air.The inlet end 6C of B capillary 6 is connected with outside charger, realizes the air of outside to be transported in processed composite product; The exhaust end 6D of B capillary 6 is arranged in the tube wall through hole 2D2 of hollow tube 2D by sealing ring 2C.
In the present invention, the length of B capillary 6 is designated as H
6; The diameter of the second through hole 6A of B capillary 6 is designated as d
6, essence is also the internal diameter of B capillary 6; The diameter of the body 6B of B capillary 6 is designated as D
6, essence is also the external diameter of B capillary 6.Usually, H
6value is 1cm ~ 5cm, d
6value is 0.05mm ~ 0.2mm, D
6value is 0.4mm ~ 0.8mm.
In the present invention, by the second through hole 6A of minor diameter (also referred to as small-bore), air transmission is sent into, then after hollow tube 2D, transmitted by major diameter (also referred to as heavy caliber) first through hole 5A and send in processed composite product.Processed composite product is in process, and after resin flows, when flowing to the exhaust end 5D of A capillary 5 of setting, because described exhaust end 5D is blocked by resin, air just can not inject, and pressure sensor 2A now can detect pressure information F
n(identification number of the responsive subsystem of n representative pressure), and by this pressure information F
npass to pressure monitoring subsystem 1, demonstrate real-time resin flows forward situation by pressure monitoring subsystem 1.Composite product personnel can be used for regulating relative parameter in composite liquid moulding process by observing resin flows forward situation on the one hand; Can be used on the other hand the even situation of resin distribution in COMPOSITE MATERIALS.
(3) pressure sensitive device 2
Shown in Fig. 2, Fig. 2 A, Fig. 2 B, pressure sensitive device 2 is made up of pressure sensor 2A, adaptor 2B, sealing ring 2C and hollow tube 2D.The pressure information F that described pressure sensor 2A sensitivity arrives
npass to pressure monitoring subsystem 1.
One end of hollow tube 2D is provided with A internal thread segment 2D3, and the other end of hollow tube 2D is provided with B internal thread segment 2D4; The body of hollow tube 2D is provided with fourth hole 2D2; Described A internal thread segment 2D3 is threaded the thread segment 2B2 of adaptor 2B; Described B internal thread segment 2D4 is threaded the thread segment 2A1 of pressure sensor 2A; Described fourth hole 2D2 place is sealed and installed with the exhaust end 6D of B capillary 6 by sealing ring 2C.
Adaptor 2B is provided with third through-hole 2B1 and thread segment 2B2; The thread segment 2B2 of adaptor 2B is threaded on the B internal thread segment 2D4 of hollow tube 2D; The inlet end 5A that third through-hole 2B1 is used for A capillary 5 passes, and the inlet end 5A through the A capillary 5 of the third through-hole 2B1 of adaptor 2B is placed in the cavity 2D1 of hollow tube 2D.
In the present invention, the inlet end 5A of A capillary 5, through after the third through-hole 2B1 of adaptor 2B, need seal with fluid sealant, in order to avoid gas leakage.
(4) pressure monitoring subsystem 1
In the present invention, pressure monitoring subsystem 1 is for being recorded in the moment that in composite liquid molding process, resin flows forward arrives.
In the present invention, pressure monitoring subsystem 1 includes a computer, and operates in the on-line monitoring resin flows forward module in computer program.On-line monitoring resin flows forward module has been developed on Visual Fortran 6.5 and FEPG software platform basis, adopt the friendly interface of Windows style simultaneously, operation is simple, and user (or composite product personnel) easily grasps.
In the present invention, the interface of on-line monitoring resin flows forward module is shown in Figure 5.In figure, be provided with the three types of typical composite liquid moulding process, and vacuum, pressure, temperature, resin viscosity, the molding time in composite liquid moulding process, and the time blocking the exhaust end 6D of A capillary 6 for resin of monitoring point display.Composite product personnel are analyzed by the situation of parameter to resin flows forward shown in different passage.
In the present invention, B capillary is as air-flow air inlet, and A capillary is as air-flow gas outlet, and other one end of gas outlet capillary tubing is placed on the fiber place that will monitor.Pressure signal is converted into the signal of telecommunication by pressure sensor in whole process, passes to pressure monitoring subsystem 1 by connecting line.Pressure monitoring subsystem 1 shows in real time, the pressure variety stored in the cavity 2D1 of hollow tube 2D.By observing the change of its pressure, monitoring resin flows forward, as shown in Figure 5.In figure, be filled with air by B capillary and discharge air to A capillary, the pressure demonstrated in pressure monitoring subsystem 1 is in rising trend.When there being resin flows to arrive the exhaust end of A capillary, because bore is less, resin has then blocked this exhaust end, and now the pressure that demonstrates of pressure monitoring subsystem 1 is on a declining curve.Time in composite liquid forming process, it is a stable state.
As the A capillary of presser sensor subsystem, its exhaust end 5D is placed on fiber place to be measured, is encapsulated in the lump in vacuum bag with fiber, must ensure the position not change of capillary tubing in forming process.Due to monitoring system by means of only capillary tubing with treat that examining system is combined, therefore by treat examining system produce impact drop to minimum.It should be noted that, the Vacuum Pressure that what this on-line monitoring system was tested is not in vacuum bag, but the pressure change in the cavity 2D1 of hollow tube 2D.When machining composite material product vacuumizes, the Vacuum Pressure of vacuum bag is 101kPa, because the gas flow sucked from capillary tubing is few, so can ignore the impact of the vacuum in vacuum bag.
At certain temperature and pressure, packaged vacuum bag system is vacuumized, start composite liquid forming process.In whole molding process, the change of pressure that pressure monitoring subsystem 1 demonstrates can be divided into three phases: pressure increase, pressure remain unchanged and pressure drop (shown in Fig. 5 A, visual be presented on computer screen).Its decrease reason is the propelling along with the time, and resin flows forward arrives the exhaust end place of capillary tubing and blocked.Now, in the cavity of hollow tube 2D, dynamic vacuum balance is destroyed, and Vacuum Pressure reduces.Therefore, observed the change of vacuum in vacuum tank by pressure monitoring subsystem, resin flows forward can be monitored, to detect the effect of impregnation of resin to fiber, thus timely Optimizing Process Parameters, improve Forming Quality.
embodiment 1
Vacuum assistant resin infused is a kind of forming technique of the large-scale product of composite of novel low cost, it is the gas got rid of under vacuum conditions in fibre reinforcement, utilize the flowing of resin, infiltration, realize fiber and textile impregnation thereof, and be cured under room temperature or heating, form the process of certain resin/proportion of fibers.In order to study accuracy and the sensitivity of resin flows forward Online Transaction Processing of the present invention, adopt the method for visual flowing experiment, pass through vacuum assistant resin infused, videograph flow fronts position, use Online Transaction Processing record flow fronts position of the present invention simultaneously, and both are compared.
Experiment reinforcing material is surface density 200g/m
2t700 carbon fiber one-way fabric, test liquid silicone oil.Experiment mould is the flat plate mold of die cavity thickness 3mm, and the carbon fiber laying being of a size of 360mm × 100mm is positioned in die cavity.The presser sensor subsystem that pressure monitoring subsystem is identical with six nested structures connects, and the presser sensor subsystem identical to six nested structures is numbered, and is distinguished the resin flows situation at diverse location place by numbering.The exhaust end of six roots of sensation A capillary 5 is positioned over the diverse location of fiber surface, encapsulates with transparent vacuum bag.Vacuumizing vacuum bag system makes it reach certain vacuum, now vacuum bag compacting internal fiber.Silicone oil continues to inject in vacuum bag system, propelling in time, and its flow fronts moves forward in (i.e. resin flows direction 9) gradually along Y-direction shown in Fig. 6, arrives the capillary tubing at diverse location place.Carbon fiber laying is equivalent to the fiber lay down 7 in Fig. 6, and silicone oil is equivalent to the resin molding 8 in Fig. 6, and the flow direction of silicone oil is also equivalent to the resin flows direction 9 in Fig. 6.
The pressure history demonstrated from computer display, when silicone oil does not arrive capillary tubing, in vacuum tank, Vacuum Pressure is without significant change; When silicone oil is through capillary tubing, Vacuum Pressure obviously reduces, and significant change appears in monitoring curve.Therefore, this monitoring system can the position of monitoring liquid flow fronts effectively delicately.Contrasted over time with the flow fronts position obtained by monitoring curve over time by the flow fronts position observed, both discoveries have good uniformity, illustrate that this monitoring system has higher accuracy and reliability.
embodiment 2
In composite liquid molding process, non-homogeneous resin flows forward be cause occurring in final products hole and not exclusively fill Fundamentals, therefore be necessary to carry out on-line monitoring to it, thus timely adjusting process parameter (quantity and position as resin injection mouth), avoid it to occur as far as possible, ensure Forming Quality.In an experiment, take two schemes to test feasibility that this on-line monitoring system monitors non-homogeneous resin flows forward.
As shown in Figure 7, at the surface of carbon fiber laying and middle each placement one group of capillary tubing (often organizing three), the position correspondence of two groups of capillary tubing ends in X-Y plane is identical.Vacuumize with after vacuum bag encapsulation, silicone oil is along in the injected system of Y-direction shown in figure.This monitoring system on-line monitoring silicone oil arrives the time of every root capillary tubing.Arriving the time of the two capillary tubing ports in identical X-Y position in not coplanar by comparing flow fronts, Non-Uniform Flow forward can be detected.As shown in Figure 8, under the solid resin film that E-44 and E-20 is made into is placed on carbon fiber laying, in each placement in the edge of carbon fiber laying and central authorities one group of capillary tubing (often organizing three), two groups of capillary tubing ends position correspondence is in z-direction identical.Make it melt gradually with vacuumizing also heated resin film after vacuum bag encapsulation, liquid resin infiltrates carbon fiber laying along Z-direction shown in figure.This test macro on-line monitoring resin flows forward arrives the time of every root capillary tubing.Arriving the time of the two capillary tubing ports in identical edge, Z-direction position and central authorities by comparing flow fronts, Non-Uniform Flow forward can be detected.
Experimental result as Fig. 7 shows, the time difference that silicone oil flow fronts arrives identical X-Y position capillary tubing port in not coplanar is no more than 10s, and therefore in experiment, liquid flow forward is consistent, namely there is not Non-Uniform Flow forward.
Experimental result as Fig. 8 shows, the time difference that resin flows forward arrives identical edge, Z-direction position and central capillary tubing port reaches 200s, and therefore in experiment, resin flows forward is inconsistent, namely there is Non-Uniform Flow forward.Two schemes all shows that this Online Transaction Processing can uniformity, the uniformity of resin flows forward in successful tracer liquid molding process.
embodiment 3
Resin film infusion puts in people's die cavity by resin molding or resin mass, then thereon coated with reinforcing materials such as perform manufacturings, die cavity is closed again with vacuum bag, vacuumizing also heating mould makes the resin molding in die cavity or resin mass melt, and penetrate into fibrage (being generally from the bottom to top) under vacuum conditions, be finally cured obtained goods.This molding process carries out usually in autoclave, and the closure of autoclave and internal high temperature high pressure feature thereof cause Resin Film Infusion moulding process on-line monitoring difficulty to increase.On-line monitoring system of the present invention can be successfully applied to autoclave environment, has high reliability and accuracy.
In forming process, monitoring system is placed in outside autoclave, is combined by the system under test (SUT) of capillary tubing in autoclave, and capillary tubing arrives system under test (SUT) through hot pressing tank skin, must ensure that capillary tubing is not bent in whole forming process.Under a certain pressure, make it melt to resin molding heating, liquid resin is by lower and upper infiltration carbon fiber laying.The position that on-line monitoring system Real-Time Monitoring resin flows forward arrives, detects resin wetting fibre effect.
Experimental result shows, the resin flows forward change in location measured by this monitoring system is consistent with the resin flows forward change in location calculated by Darcy's law, illustrates that this monitoring system is applicable to the Resin film infusion carried out at autoclave environment.In addition, unitary variant method is adopted to change molding technique parameter in experiment, using this monitoring system on-line monitoring resin flows forward, detecting resin flows with the change of technological parameter by organizing experiment more, successfully test autoclave environment pressure and fiber ply stacking-sequence to the impact of resin flows.
Claims (8)
1. the on-line system for the resin flows forward of test compound marking liquid molding process, this resin flows forward Online Transaction Processing includes pressure monitoring subsystem (1), described pressure monitoring subsystem (1) includes a computer, and runs on-line monitoring resin flows forward module in a computer; It is characterized in that: this resin flows forward Online Transaction Processing also includes presser sensor subsystem;
Described presser sensor subsystem is made up of pressure sensitive device (2), A capillary (5) and B capillary (6);
A capillary (5) and B capillary (6) are arranged on pressure sensitive device (2) respectively;
Vacuum mold (3) in described resin flows forward Online Transaction Processing and composite liquid moulding process and vavuum pump (4) with the use of;
The centre of A capillary (5) is the first through hole (5A), and this first through hole (5A) is for carrying air; The inlet end (5C) of A capillary (5) is arranged in the third through-hole (2B1) of adaptor (2B), and the exhaust end (5D) of A capillary (5) is placed in processed composite product;
The centre of B capillary (6) is the second through hole (6A), and this second through hole (6A) is for carrying air; The inlet end (6C) of B capillary (6) is connected with outside charger, realizes the air of outside to be transported in processed composite product; The exhaust end (6D) of B capillary (6) is arranged in the tube wall through hole (2D2) of hollow tube (2D) by sealing ring (2C);
Pressure sensitive device (2) is made up of pressure sensor (2A), adaptor (2B), sealing ring (2C) and hollow tube (2D); The pressure information F that described pressure sensor (2A) sensitivity arrives
npass to pressure monitoring subsystem (1);
One end of hollow tube (2D) is provided with A internal thread segment (2D3), and the other end of hollow tube (2D) is provided with B internal thread segment (2D4); The body of hollow tube (2D) is provided with fourth hole (2D2); Described A internal thread segment (2D3) is threaded the thread segment (2B2) of adaptor (2B); Described B internal thread segment (2D4) is threaded the thread segment (2A1) of pressure sensor (2A); Described fourth hole (2D2) place is sealed and installed with the exhaust end (6D) of B capillary (6) by sealing ring (2C);
Adaptor (2B) is provided with third through-hole (2B1) and thread segment (2B2); The thread segment (2B2) of adaptor (2B) is threaded in the B internal thread segment (2D4) of hollow tube (2D); Third through-hole (2B1) passes for the inlet end (5A) of A capillary (5), and the inlet end (5A) through the A capillary (5) of the third through-hole (2B1) of adaptor (2B) is placed in the cavity (2D1) of hollow tube (2D).
2. the on-line system of the resin flows forward for test compound marking liquid molding process according to claim 1, it is characterized in that: described on-line monitoring resin flows forward module is used for the visual pressure change demonstrated under different time, namely pressure increase stage, pressure remain unchanged stage and pressure drop phase.
3. the on-line system of the resin flows forward for test compound marking liquid molding process according to claim 1, is characterized in that: the centre that the internal diameter of first through hole (5A) of A capillary (5) is greater than B capillary (6) is the internal diameter of the second through hole (6A).
4. the on-line system of the resin flows forward for test compound marking liquid molding process according to claim 1, is characterized in that: the length H of A capillary (5)
5value is the diameter d of first through hole (5A) of 100cm ~ 500cm, A capillary (5)
5value is the diameter D of the body (5B) of 0.3mm ~ 1.0mm, A capillary (5)
5value is 0.5mm ~ 2.0mm.
5. the on-line system of the resin flows forward for test compound marking liquid molding process according to claim 1, is characterized in that: the length H of B capillary (6)
6value is the diameter d of second through hole (6A) of 1cm ~ 5cm, B capillary (6)
6value is the diameter D of the body (6B) of 0.05mm ~ 0.2mm, B capillary (6)
6value is 0.4mm ~ 0.8mm.
6. the on-line system of the resin flows forward for test compound marking liquid molding process according to claim 1, is characterized in that: can be used in monitoring the resin flows situation analysis in vacuum assistant resin infused.
7. the on-line system of the resin flows forward for test compound marking liquid molding process according to claim 1, is characterized in that: can be used in monitoring the resin flows situation analysis in composite liquid moulding process.
8. the on-line system of the resin flows forward for test compound marking liquid molding process according to claim 1, is characterized in that: can be used in monitoring the resin flows situation analysis in Resin film infusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310643627.4A CN103692667B (en) | 2013-12-03 | 2013-12-03 | On-line system for testing resin flowing forward in composite material liquid forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310643627.4A CN103692667B (en) | 2013-12-03 | 2013-12-03 | On-line system for testing resin flowing forward in composite material liquid forming process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103692667A CN103692667A (en) | 2014-04-02 |
| CN103692667B true CN103692667B (en) | 2015-05-06 |
Family
ID=50354412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310643627.4A Active CN103692667B (en) | 2013-12-03 | 2013-12-03 | On-line system for testing resin flowing forward in composite material liquid forming process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103692667B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106166846A (en) * | 2016-09-26 | 2016-11-30 | 肇庆福田化学工业有限公司 | Automatization's vacuum imports former |
| CN106903907B (en) * | 2017-03-24 | 2019-04-09 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of liquid molding process resin automatic injection system and its technique |
| CN115056506A (en) * | 2022-06-16 | 2022-09-16 | 西安交通大学 | Resin film infiltration process resin infiltration process monitoring method and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343162A (en) * | 1999-03-12 | 2002-04-03 | Vec技术公司 | Method and apparatus for molding composite articles |
| CN1851451A (en) * | 2006-06-02 | 2006-10-25 | 北京航空航天大学 | LCM process DC resistance real-time monitoring method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6623672B2 (en) * | 2000-10-03 | 2003-09-23 | Vec Technology Inc. | Method and apparatus for molding composite articles |
-
2013
- 2013-12-03 CN CN201310643627.4A patent/CN103692667B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343162A (en) * | 1999-03-12 | 2002-04-03 | Vec技术公司 | Method and apparatus for molding composite articles |
| CN1851451A (en) * | 2006-06-02 | 2006-10-25 | 北京航空航天大学 | LCM process DC resistance real-time monitoring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103692667A (en) | 2014-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103692667B (en) | On-line system for testing resin flowing forward in composite material liquid forming process | |
| Buntain et al. | Compression flow permeability measurement: a continuous technique | |
| Scholz et al. | Measurement of transverse permeability using gaseous and liquid flow | |
| CN103954743B (en) | Vacuum assistant resin infused fabric compactingproperties and permeability properties integrated test electricity testing device | |
| CN104760302B (en) | A kind of method of utilization microwave heating absorbing material mold cured composite | |
| WO2012100630A1 (en) | Testing apparatus for testing gas permeability on thickness direction of plastic matrix | |
| CN107367523A (en) | A kind of method of the effectively chemical shrinkage factor of same with thermosetting compound material of monitoring in real time | |
| CN105946249B (en) | A kind of preparation facilities and method tested with composite board sample | |
| CN100461192C (en) | Simulating method for resin flow and limanite deformed in resin-base composite L-shaped laminate forming | |
| CN105690805B (en) | Method for real-time controlling resin transfer molding process | |
| CA2812276A1 (en) | Resin flow control in vartm process | |
| CN205981993U (en) | Device of layer thickness direction infiltration nature is spread to test resin at fibre | |
| del Río et al. | 3D-printed resistive carbon-fiber-reinforced sensors for monitoring the resin frontal flow during composite manufacturing | |
| CN105459419B (en) | A kind of composite priming by vacuum gas leak detection device and installation and application | |
| CN103350514A (en) | Preparation process of double-surface flat glass steel plate for laboratory test | |
| Zhao et al. | Three-dimensional numerical simulation of meso-scale-void formation during the mold-filling process of LCM | |
| CN202837144U (en) | Resin/fiber wettability testing device | |
| CN106353236A (en) | Device for testing in-plane and out-plane permeability of fabric | |
| TW201615391A (en) | A method of real-time measuring local permeability coefficient in resin transfer molding | |
| CN108982323A (en) | Measuring device and its method for plate preform fiber pervasion rate | |
| CN104297121B (en) | Measurement method for in-plane unsaturated permeability rates of natural fiber fabric | |
| CN107139505B (en) | High speed and ultrahigh speed grinding wheel base body vacuum infusion molding device | |
| TW201804146A (en) | Resin transfer molding equipment and method capable of measuring permeability comprising a resin supply unit, a mold unit, a detecting capacitor unit and a control unit; the resin supply unit is connected with the mold unit | |
| CN206311603U (en) | It is a kind of to evaluate the experimental provision that fracturing fluid is injured to petroleum reservoir | |
| CN205323551U (en) | A device for determining amberplex aperture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |