Material accelerated aging simulation test system

Abstract

A material accelerated aging simulation test system comprises a cubic light box, a light source module and a temperature control module. The cubic light box has a bottom surface for bearing a material sample, a top surface through which light can penetrate, and a continuous wall connecting the bottom surface and the top surface. The light source module is arranged on the cubic light box and comprises two xenon lamp tubes and two ultraviolet lamps. The two ultraviolet lamps are arranged along the center line of the top face, and the two xenon lamp tubes are arranged on the two sides of the two ultraviolet lamps in parallel. Each ultraviolet lamp comprises a reflective eccentric lamp tube and an ultraviolet light source arranged in the reflective eccentric lamp tube. The light source module is configured to provide an irradiation intensity of at least 1500 watts per square meter and an illumination uniformity of no more than + / -15%. The temperature control module comprises a water cooling circulation device for driving a cooling liquid to circulate and flow through the two xenon lamp tubes, and an air cooling device for driving air flow to flow through the inner space of the cubic light box. Therefore, the aging test time of the material can be greatly shortened, and the development of a new material is accelerated.

Description

Technical Field

[0001] The present invention relates to a material accelerated aging simulation test system, including simulating the natural solar irradiation spectrum and accelerating the material aging test by increasing the irradiation stress. Background Art

[0002] Materials applied in fields such as vehicle-mounted, military, and aerospace must have high reliability. In order to accelerate the development and verification of new materials, a device capable of accelerating the destruction of materials is needed.

[0003] Although there are currently some patents on material aging tests, the designs of these patents are difficult to achieve higher irradiation intensity and better illuminance uniformity to accelerate material development. For example, the patent document CN115290537A discloses a sample box with an ultraviolet lamp column set in the center. Although it can irradiate the sample uniformly, by adopting the direct irradiation method, it cannot reach the situation where when the sample is irradiated by the sun in the natural environment, the sample can also receive the diffuse reflection from the ground and the surrounding environment. Another example is the patent document TWI522606B of Taiwan, China, which discloses using pulsed laser to irradiate the sample. Although it discloses the content of high-energy ultraviolet light irradiation and water-cooled cooling, in the case of natural sunlight, its irradiation spectrum is the full band including visible light and invisible light. Therefore, it also fails to truly reflect the natural light state. Summary of the Invention

[0004] In order to solve the above problems and overcome the deficiencies of the prior art, the purpose of the present invention is to provide a material accelerated aging simulation test system that can simultaneously achieve simulating the full-spectrum irradiation of natural sun and high irradiation stress.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A material accelerated aging simulation test system includes a cubic light box, a light source module, and a temperature control module. The cubic light box has a bottom surface for carrying material samples, a light-penetrable top surface, and continuous walls connecting the bottom surface and the top surface. The light source module is arranged on the cubic light box and includes two xenon lamps and two ultraviolet light fixtures. The two ultraviolet light fixtures are arranged along the center line of the top surface, and the two xenon lamps are arranged in parallel on both sides of the two ultraviolet light fixtures. Each of the two ultraviolet light fixtures includes a reflective eccentric lamp barrel and an ultraviolet light source arranged in the reflective eccentric lamp barrel. The light source module is configured to provide an irradiation intensity of at least 1500 watts per square meter and an illuminance uniformity of not more than plus or minus 15% for the cubic light box. The temperature control module includes a water-cooled circulation device and an air-cooled device. The water-cooled circulation device is connected to the two xenon lamps and is configured to drive the cooling liquid to circulate and flow through the two xenon lamps. The air-cooled device is configured to drive the air flow to flow through the internal space of the cubic light box.

[0007] In some embodiments, the material accelerated aging simulation test system further includes at least one light intensity sensor and a control module. The light intensity sensor is disposed on the bottom surface and is located in the effective irradiation area of the bottom surface. The light intensity sensor is configured to provide at least one light intensity signal. The control module is communicatively connected to the light intensity sensor and the light source module, and is configured to increase or decrease the output of the light source module according to the light intensity signal.

[0008] In some embodiments, the material accelerated aging simulation test system includes a plurality of light intensity sensors, and the light intensity sensors are disposed at the corners and the center of the effective irradiation area.

[0009] In some embodiments, the material accelerated aging simulation test system further includes at least one thermometer and a control module. The thermometer is disposed in the cubic light box and is configured to provide at least one temperature signal. The control module is communicatively connected to the thermometer and the temperature control module, and is configured to control the heat dissipation efficiency of the temperature control module according to the temperature signal.

[0010] In some embodiments, the reflective eccentric lamp barrel has a top end, a light outlet, and a side wall connected between the top end and the light outlet, and the reflective eccentric lamp barrel gradually expands from the top end towards the light outlet. The ultraviolet light source is disposed at the top end of the reflective eccentric lamp barrel. The side wall has opposite two sides, and the slopes or curvatures of the two sides of the side wall are different.

[0011] In some embodiments, the material accelerated aging simulation test system further includes a light source switch controller, and the light source switch controller is electrically connected to two xenon lamps and two ultraviolet light fixtures, and is configured to simultaneously turn on the two xenon lamps and the two ultraviolet light fixtures, only turn on the two xenon lamps, or only turn on the two ultraviolet light fixtures.

[0012] In some embodiments, the material accelerated aging simulation test system further includes at least one irradiation angle adjusting mechanism, and at least one of the two ultraviolet light fixtures is disposed on the irradiation angle adjusting mechanism.

[0013] In some embodiments, the material accelerated aging simulation test system further includes a housing having an accommodation space, and the light source module is disposed in the accommodation space. The air cooling device is further configured to drive air flow through the accommodation space.

[0014] In some embodiments, the continuous walls of the cubic light box have a diffuse reflection surface.

[0015] In some embodiments, the material accelerated aging simulation test system further includes at least one filter, and the filter is disposed between the cubic light box and the light source module.

[0016] In summary, the material accelerated aging simulation test system disclosed herein includes two xenon lamps and two ultraviolet lamps that are symmetrically arranged, and can provide an irradiation intensity of at least 1500 W / m² and an illuminance uniformity of no more than ±15% for a cubic light box for accommodating material samples. Through such a high-energy and high-uniformity light source design, the aging test time of the material can be significantly shortened. The material accelerated aging simulation test system disclosed herein further includes a water cooling circulation device and an air cooling device, which can ensure that the material sample is in an environment with an appropriate temperature and can also assist in dissipating heat from the light source to prevent the light source from overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To make the above and other objects, features, advantages, and embodiments of the present disclosure more apparent and understandable, the drawings are described as follows:

[0018] Figure 1 FIG. 9 is a schematic perspective view of a material accelerated aging simulation test system according to an embodiment of the present disclosure;

[0019] Figure 2 FIG. 13 is a schematic top view of a lamp library and a water cooling circulation device of a material accelerated aging simulation test system according to an embodiment of the present disclosure;

[0020] Figure 3 FIG. 17 is a schematic diagram showing the irradiation areas of two xenon lamps;

[0021] Figure 4 FIG. 21 is a schematic perspective side view of one of the ultraviolet lamps;

[0022] Figure 5 FIG. 25 is a schematic diagram showing the irradiation areas of two ultraviolet lamps;

[0023] Figure 6 FIG. 29 is a functional block diagram of a material accelerated aging simulation test system according to an embodiment of the present disclosure;

[0024] Figure 7 FIG. 33 is a schematic perspective side view of an ultraviolet lamp according to another embodiment of the present disclosure.

[0025]

SYMBOL DESCRIPTION

[0026] 10: Material accelerated aging simulation test system

[0027] 11: Internal space

[0028] 12: Cubic light box

[0029] 13: Bottom surface

[0030] 14: Top surface

[0031] 16: Continuous wall

[0032] 17: Wall surface

[0033] 18: Air outlet

[0034] 20: Lamp library

[0035] 21: Housing

[0036] 22: Accommodating space

[0037] 23: Filter

[0038] 24: Air inlet

[0039] 25: Air outlet

[0040] 30: Light source module

[0041] 31: Xenon lamp tube

[0042] 32, 32A: Ultraviolet lamp

[0043] 34, 34A: Reflective eccentric lamp barrel

[0044] 35: Ultraviolet light source

[0045] 36: Light outlet

[0046] 37: Top end

[0047] 38, 38A: Side wall

[0048] 39A: First side

[0049] 39B: Second side

[0050] 40: Irradiation angle adjustment mechanism

[0051] 41: Control module

[0052] 42: Light source switch controller

[0053] 50: Temperature control module

[0054] 53: Water cooling circulation device

[0055] 54: Liquid pipeline

[0056] 56: Air cooling device

[0057] 57: Gas pipeline

[0058] 61: Bracket

[0059] 62: Wick

[0060] 63: Inner filter

[0061] 64: Outer filter

[0062] 65: Liquid channel

[0063] 71: Light intensity sensor

[0064] 73: Thermometer

[0065] 75: Blackboard thermometer

[0066] 77: Black label thermometer

[0067] 90: Material sample

[0068] 91, 92: Irradiation area

[0069] 93: Effective irradiation area

[0070] 96, 97: Center line

[0071] A1: First included angle

[0072] A2: Second included angle

[0073] B1, B2: Angle Detailed implementation manners

[0074] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0075] Please refer to Figure 1 , which is a schematic perspective view (showing internal components and structures in dashed lines) of a material accelerated aging simulation test system according to an embodiment of the present disclosure. The material accelerated aging simulation test system 10 includes a cubic light box 12 and a lamp library 20 disposed on the cubic light box 12. The cubic light box 12 has a bottom surface 13 for carrying a material sample 90, a light-penetrable top surface 14, and continuous walls 16 connected between the bottom surface 13 and the top surface 14. The lamp library 20 is disposed on the top surface 14 of the cubic light box 12 and is configured to irradiate the material sample 90 through the top surface 14 of the cubic light box 12. The light provided by the lamp library 20 may include ultraviolet light, visible light, and infrared light. The purpose of irradiating the material sample 90 is to damage the material sample 90, accelerate the aging of the material sample 90, and test the reliability of the material sample 90. Such a test is called an environmental stress test (applying environmental stresses such as light, humidity, temperature, vibration, etc. to the sample to discover its potential defects), or an accelerated aging test.

[0076] As Figure 1 shown, the lamp library 20 includes a housing 21 and a light source module 30. The housing 21 has an accommodation space 22, and the light source module 30 is disposed in the accommodation space 22. The light source module 30 is configured to emit light to irradiate the material sample 90. In some embodiments, the lamp library 20 further includes at least one filter 23, and the filter 23 is disposed in the accommodation space 22 of the housing 21 and is located between the cubic light box 12 and the light source module 30.

[0077] The filter 23 is used to adjust the light spectrum emitted by the light source module 30, especially to adjust the light spectrum emitted by the xenon lamp. The filter 23 is used to adjust the light emitted by the light source module 30 to a light spectrum consistent with natural sunlight. In some embodiments, the filter 23 adjusts the light spectrum of the light emitted by the light source module 30 by filtering out a specific proportion of light in a specific wavelength band, so as to simulate the light spectrum of natural sunlight, that is, having specific energy in a specific wavelength band. In some embodiments, the filter 23 can also adjust the light emitted by the light source module 30 to the indoor light spectrum of natural sunlight entering the room through the window glass, or adjust the light spectrum to the in-vehicle light spectrum of natural sunlight entering the vehicle through the car window with a heat-resistant film attached, or adjust the light spectrum to other simulation scenarios.

[0078] In some embodiments, the filter 23 is a natural sunlight simulator. In some embodiments, the filter 23 is an indoor light simulator. In some embodiments, the filter 23 is an in-vehicle light simulator. In some embodiments, the filter 23 is a quartz coating. In some embodiments, the filter 23 is a double-layer quartz coated glass, which has a hollow part for ventilation to take away heat.

[0079] As Figure 1 shown, in some embodiments, the continuous wall 16 of the cubic light box 12 has a diffuse reflection surface, in this way, light can be reflected in the cubic light box 12 to evenly irradiate the material sample 90. For example: the material of the continuous wall 16 can be a material with a smooth surface and optical reflection effect, the material of the continuous wall 16 can be stainless steel, and the surface of the continuous wall 16 can be coated with an optical reflection coating.

[0080] As Figure 1 shown, in some embodiments, the continuous wall 16 of the cubic light box 12 has four wall surfaces 17 (only three are marked in the figure), and all four wall surfaces 17 are diffuse reflection surfaces. In some embodiments, the four wall surfaces 17 of the continuous wall 16 are stainless steel wall surfaces. In some embodiments, the four wall surfaces 17 of the continuous wall 16 extend obliquely (that is, not parallel to the outer wall of the cubic light box 12) to facilitate the reflection of light in the cubic light box 12.

[0081] In some embodiments, the bottom surface 13 of the cubic light box 12 can have a surface with optical reflection effect. In some embodiments, the bottom surface 13 of the cubic light box 12 can be a surface with extinction effect. In some embodiments, the bottom surface 13 of the cubic light box 12 can be a black surface. In some embodiments, the bottom surface 13 of the cubic light box 12 can be a matte surface.

[0082] In some embodiments, the light source module 30 is configured to provide the cubic light box 12 with an irradiation intensity of at least 1500 watts per square meter and an illuminance uniformity of no more than plus or minus 15%. In some embodiments, the light source module 30 is configured to provide the cubic light box 12 with an irradiation intensity of at least 1500 watts per square meter, an irradiation instability of no more than plus or minus 5%, and an illuminance uniformity of no more than plus or minus 15%. In some embodiments, the light source module 30 is configured to provide the cubic light box 12 with an irradiation intensity of at least 3000 watts per square meter. In some embodiments, the light source module 30 is configured to provide the cubic light box 12 with an irradiation intensity of at least 5000 watts per square meter. In some embodiments, the light source module 30 is configured to provide the cubic light box 12 with an irradiation intensity of at least 10000 watts per square meter. In some embodiments, the light source module 30 is configured to provide the cubic light box 12 with an irradiation intensity of at least 30000 watts per square meter.

[0083] In some embodiments, the cubic light box 12 includes a cubic housing. In some embodiments, the cubic light box 12 includes a trapezoidal cubic housing. In some embodiments, the cubic light box 12 includes a polyhedral housing.

[0084] Please refer to Figure 2 together, which is a schematic top view showing the lamp library and the water cooling circulation device of the material accelerated aging simulation test system according to an embodiment of the present disclosure. As shown, the light source module 30 includes two xenon lamps 31 and two ultraviolet lamps 32. The two ultraviolet lamps 32 are arranged along the center line 96 of the top surface 14 of the cubic light box 12, and the two xenon lamps 31 are arranged in parallel on both sides of the two ultraviolet lamps 32. In other words, the two xenon lamps 31 are located on both sides of the center line 96 and extend substantially parallel to the center line 96.

[0085] The light spectrum emitted by the xenon lamp 31 includes the spectra of visible light and invisible light bands. In some embodiments, the xenon lamp 31 includes all the light spectra in natural sunlight. In some embodiments, the light emitted by the xenon lamp 31 is a light spectrum simulating natural sunlight, which includes specific energies in specific bands. In some embodiments, the xenon lamp 31 is a long lamp, such as a long cylindrical lamp.

[0086] The light spectrum emitted by the ultraviolet lamp 32 includes an ultraviolet light spectrum, specifically including the light spectrum in the wavelength band of 100 nm to 400 nm. In some embodiments, the light spectrum emitted by the ultraviolet lamp 32 includes the entire ultraviolet spectrum, or may include a partial band of the ultraviolet spectrum. In some embodiments, the ultraviolet lamp 32 can be an ultraviolet lamp that emits a specific light spectrum selected for a specific test material. In some embodiments, the ultraviolet lamp 32 can be an ultraviolet lamp that selects a light spectrum particularly suitable for inspection according to the aging mechanism of polymer materials. In some embodiments, the ultraviolet lamp 32 can be an ultraviolet lamp that emits ultraviolet light in the range of 300 nm to 400 nm, which is particularly sensitive to polymer materials.

[0087] The combination of the xenon lamp tube 31 and the filter 23 can provide light with a full wavelength that simulates natural sunlight (i.e., including ultraviolet light, visible light, and infrared light), while the ultraviolet lamp 32 can provide light in the ultraviolet band (e.g., with a wavelength of about 300 to 400 nanometers). In some embodiments, the xenon lamp tube 31 and the ultraviolet lamp 32 can provide ultraviolet light with an irradiation intensity of at least 1500 watts per square meter.

[0088] As Figure 1 And Figure 2 As shown, each of the two ultraviolet lamps 32 includes a reflective eccentric lamp barrel 34 and an ultraviolet light source 35 disposed in the reflective eccentric lamp barrel 34. The reflective eccentric lamp barrel 34 can be in the shape of a bowl, a cylinder, or a pyramid. In some embodiments, the reflective eccentric lamp barrel 34 has a light outlet 36, and the light outlet 36 is in the shape of an oval, and the ultraviolet light source 35 is disposed offset from the center of the light outlet 36. In some embodiments, the light outlet 36 can also be elliptical or circular. In some embodiments, the ultraviolet light source 35 includes an ultraviolet light-emitting diode chip. In some embodiments, the two ultraviolet lamps 32 are symmetrically disposed with respect to the center line 96 of the top surface 14 and another center line 97 (perpendicular to the center line 96).

[0089] As Figure 1 And Figure 2 As shown, the material accelerated aging simulation test system further includes a temperature control module 50. The temperature control module 50 includes a water-cooled circulation device 53. The water-cooled circulation device 53 is connected to the two xenon lamp tubes 31 through a liquid pipeline 54 and is configured to drive the cooling liquid to circulate and flow through the liquid pipeline 54 and the two xenon lamp tubes 31 to assist the xenon lamp tubes 31 in dissipating heat. For example, the water-cooled circulation device 53 can include a cooling device for cooling the cooling liquid and a water pump (not shown in the figure) for driving the cooling liquid to flow.

[0090] As Figure 1 And Figure 2As shown, in some embodiments, the xenon lamp tube 31 includes a bracket 61, a lamp core 62, an inner filter 63, and an outer filter 64. The bracket 61 is used to carry the lamp core 62, the inner filter 63, and the outer filter 64. The lamp core 62 is the component that actually emits light in the xenon lamp tube 31. The inner filter 63 is sleeved on the lamp core 62. The outer filter 64 is sleeved on the inner filter 63 and separated from the inner filter 63 so that a liquid channel 65 is formed between the inner filter 63 and the outer filter 64. The liquid pipeline 54 communicates with the liquid channel 65, so the cooling liquid can be guided to flow through the liquid channel 65.

[0091] As Figure 1 and Figure 2 shown, the temperature control module 50 further includes an air cooling device 56. The air cooling device 56 is disposed on the cubic light box 12 and configured to drive air flow through the internal space 11 of the cubic light box 12 (i.e., the space enclosed by the bottom surface 13, the top surface 14, and the continuous wall 16) to facilitate controlling the temperature of the internal space 11. For example, the air cooling device 56 may include a cooling fan and an air filter (not shown in the figure). The air cooling device 56 can introduce air flow from the outside of the cubic light box 12 into the internal space 11 from one side of the cubic light box 12, and an air outlet 18 may be provided on the other side of the cubic light box 12 for the air flow to discharge from the internal space 11.

[0092] As Figure 1 and Figure 2 shown, in some embodiments, the air cooling device 56 is further configured to drive air flow through the accommodation space 22 of the housing 21 of the lamp library 20 to assist in dissipating heat from the ultraviolet lamp 32. Specifically, an air inlet 24 and an air outlet 25 communicating with the accommodation space 22 are formed on the continuous wall of the housing 21, and the air inlet 24 and the air outlet 25 are located on opposite sides of the housing 21. The air cooling device 56 is connected to the air inlet 24 through a gas pipeline 57 to inject air flow into the accommodation space 22, and the air flow discharges from the air outlet 25 after flowing through the accommodation space 22.

[0093] The air cooling device 56 generates air circulation to prevent the heat energy emitted by the ultraviolet lamp 32 from accumulating locally. At the same time, by introducing fresh external air with a lower temperature and discharging the air that has absorbed the heat energy of the ultraviolet lamp 32 in the housing 21 of the lamp library 20, the temperature of the cubic light box 12 is maintained, so that the sample aging test is not interfered by excessive heat energy accumulation. In other words, the material accelerated aging simulation test system 10 is set up for the aging caused by light irradiation of the sample, excluding the interference of other factors that may be caused by the acceleration setting. In some embodiments, the material accelerated aging simulation test system 10 maintains a temperature range of 30 degrees Celsius to 200 degrees Celsius for test operations.

[0094] As Figure 1 and Figure 2As shown, in some embodiments, the material accelerated aging simulation test system 10 further includes at least one light intensity sensor 71. The light intensity sensor 71 is disposed on the bottom surface 13 of the cubic light box 12 and is located within the effective irradiation area of the bottom surface 13. The light intensity sensor 71 is configured to provide at least one light intensity signal, and the light intensity signal indicates the irradiation intensity of light incident on the effective irradiation area.

[0095] As Figure 1 with Figure 2 As shown, in some embodiments, the material accelerated aging simulation test system 10 further includes at least one thermometer 73. The thermometer 73 is disposed in the internal space 11 of the cubic light box 12 and is configured to provide at least one temperature signal. In some embodiments, the thermometer 73 may include a black panel thermometer 75 and a black standard thermometer 77, which are respectively configured to provide a first temperature signal and a second temperature signal. The first temperature signal indicates the temperature inside the cubic light box 12, and the second temperature signal indicates the surface temperature of the material sample 90.

[0096] Please refer to Figure 3 , which is a schematic diagram showing the irradiation areas of two xenon lamps. Due to different positions, the two xenon lamps 31 form different irradiation areas 91 and 92 on the bottom surface 13 of the cubic light box 12. The overlapping area of the irradiation areas 91 and 92 is the effective irradiation area 93. The light intensity sensor 71 and the thermometer 73 are disposed in the effective irradiation area 93. In some embodiments, the material accelerated aging simulation test system 10 includes a plurality of light intensity sensors 71, which are disposed at the corners and the center of the effective irradiation area 93.

[0097] Please refer to Figure 4 , which is a side perspective view showing one of the ultraviolet light fixtures. The ultraviolet light source 35 is disposed at the top end 37 of the reflective eccentric lamp barrel 34, and the reflective eccentric lamp barrel 34 gradually expands from the top end 37 towards the light outlet 36 at the bottom. The reflective eccentric lamp barrel 34 also has a side wall 38 connected between the top end 37 and the light outlet 36, and the inner surface of the side wall 38 is a reflective surface. The reflective eccentric lamp barrel 34 is made of a metal material, for example. In this embodiment, the side wall 38 is an inclined and straight wall surface, and the top end 37 is disposed offset from the center of the light outlet 36 (for example: offset from the centroid of the light outlet 36), such that the two opposite sides of the side wall 38 are asymmetric (with different slopes). Specifically, the side wall 38 is closer to the center line 97 (please see Figure 2) has a first included angle A1 with the plane where the light exit 36 is located, while the side wall 38 away from the center line 97 has a second included angle A2 with the plane where the light exit 36 is located, and the second included angle A2 is not equal to the first included angle A1. In some embodiments, the second included angle A2 is less than the first included angle A1. In other words, the slope of the side wall 38 on the side close to the center line 97 is less than the slope of the side wall 38 away from the center line 97.

[0098] As Figure 4 shown, in some embodiments, the material accelerated aging simulation test system 10 further includes at least one irradiation angle adjustment mechanism 40, and the ultraviolet lamp 32 is disposed on the irradiation angle adjustment mechanism 40. In this way, the ultraviolet lamp 32 can rotate in the direction shown by the arrow to adjust the angle according to different test requirements. The irradiation angle adjustment mechanism 40 is, for example, mounted on the housing 21 of the lamp library 20. The irradiation angle adjustment mechanism 40 may include a rotating bracket. Two ultraviolet lamps 32 may be respectively disposed on one irradiation angle adjustment mechanism 40.

[0099] The irradiation angle adjustment mechanism 40 can adjust the irradiation angle of the ultraviolet lamp, especially the irradiation angle of the ultraviolet lamp 32 irradiating on the bottom surface 13 of the cubic light box 12. In some embodiments, the irradiation angle adjustment mechanism 40 can adjust the ultraviolet lamp 32 to tilt upward, downward, leftward, rightward, or rotate in all directions to achieve the desired irradiation angle. In some embodiments, the irradiation angle adjustment mechanism 40 can adjust the two ultraviolet lamps 32 to tilt towards the center of the line connecting the two, so that the irradiation areas of the two ultraviolet lamps 32 on the bottom surface 13 of the cubic light box 12 overlap.

[0100] In some embodiments, the irradiation angle adjustment mechanism 40 can adjust the irradiation angle of the ultraviolet lamp within an angle range of zero to fifteen degrees. In some embodiments, one of the ultraviolet lamps 32 is tilted five degrees relative to the normal direction of the top surface 14 of the cubic light box 12, and the other ultraviolet lamp 32 is tilted negative five degrees relative to the normal direction of the top surface 14 of the cubic light box 12; or, one of the ultraviolet lamps 32 is tilted ten degrees relative to the normal direction of the top surface 14 of the cubic light box 12, and the other ultraviolet lamp 32 is tilted negative ten degrees relative to the normal direction of the top surface 14 of the cubic light box 12; or, one of the ultraviolet lamps 32 is tilted fifteen degrees relative to the normal direction of the top surface 14 of the cubic light box 12, and the other ultraviolet lamp 32 is tilted negative fifteen degrees relative to the normal direction of the top surface 14 of the cubic light box 12.

[0101] Please refer to Figure 5, which is a schematic diagram showing the irradiation areas of two ultraviolet lamps (the bottom surface 13 of the cubic light box 12 is presented in a way that is flipped by 90 degrees). Due to different positions, the two ultraviolet lamps 32 form different irradiation areas on the bottom surface 13 of the cubic light box 12, and the overlapping area of the irradiation areas is the effective irradiation area 93. The light intensity sensor 71 and the thermometer 73 are arranged in the effective irradiation area 93. In some embodiments, the irradiation area of a single ultraviolet lamp 32 on the bottom surface 13 of the cubic light box 12 is oval. In some embodiments, the irradiation area of a single ultraviolet lamp 32 on the bottom surface 13 of the cubic light box 12 can also be elliptical.

[0102] Please refer to Figure 6 , which is a functional block diagram of a material accelerated aging simulation test system according to an embodiment of the present disclosure. In some embodiments, the material accelerated aging simulation test system 10 further includes a control module 41, and the control module 41 is communicatively connected to the light intensity sensor 71 and the light source module 30. The control module 41 is configured to receive the light intensity signal provided by the light intensity sensor 71 and increase or decrease the output of the light source module 30 according to the light intensity signal. For example, when the light intensity signal indicates that the current irradiation intensity of the effective irradiation area is less than a preset irradiation intensity, the control module 41 can send a control signal to the light source module 30, instructing at least one of the xenon lamp tube 31 and the ultraviolet lamp 32 to increase the output to increase the radiation intensity. Conversely, the control module 41 can send a control signal to the light source module 30, instructing at least one of the xenon lamp tube 31 and the ultraviolet lamp 32 to decrease the output to reduce the radiation intensity. Thereby, the irradiation intensity of the effective irradiation area can be controlled near the preset irradiation intensity.

[0103] The control module 41 may include a processor for performing computational operations, a memory for storing data, and an input / output interface for communicating with other components.

[0104] As Figure 6 shown, in some embodiments, the control module 41 is communicatively connected to the thermometer 73 and the temperature control module 50. The control module 41 is configured to receive the temperature signal provided by the thermometer 73 and control the heat dissipation efficiency of the temperature control module 50 according to the temperature signal. For example, when the temperature signal indicates that the temperature in the cubic light box 12 or the surface temperature of the material sample 90 is higher than a preset temperature, the control module 41 can send a control signal to the temperature control module 50, instructing at least one of the water cooling circulation device 53 and the air cooling device 56 to increase the heat dissipation efficiency (for example: increasing the flow rate of the cooling liquid or the air flow). Conversely, the control module 41 can send a control signal to the temperature control module 50, instructing at least one of the water cooling circulation device 53 and the air cooling device 56 to decrease the heat dissipation efficiency (for example: reducing the flow rate of the cooling liquid or the air flow). Thereby, the temperature can be controlled near the preset temperature.

[0105] As shown Figure 6 in FIG. 1, in some embodiments, the material accelerated aging simulation test system 10 further includes a light source switch controller 42. The light source switch controller 42 is electrically connected to two xenon lamps 31 and two ultraviolet lamps 32, and is configured to turn on both the two xenon lamps 31 and the two ultraviolet lamps 32, turn on only the two xenon lamps 31, or turn on only the two ultraviolet lamps 32. In this way, the material accelerated aging simulation test system 10 can meet the requirements of different test items, irradiating with both the xenon lamps 31 and the ultraviolet lamps 32, or irradiating with only one of them. In some embodiments, the light source switch controller 42 can be integrated in the control module 41, and the control module 41 is used to control the turning on and off of the xenon lamps 31 and the ultraviolet lamps 32.

[0106] Please refer to Figure 7 , which shows a side perspective view of an ultraviolet lamp 32A according to another embodiment of the present disclosure. The ultraviolet light source 35 is disposed at the top 37 of the reflective eccentric lamp barrel 34A, and the reflective eccentric lamp barrel 34A gradually expands from the top 37 towards the light outlet 36 at the bottom. The reflective eccentric lamp barrel 34A further has a side wall 38A connected between the top 37 and the light outlet 36, and the inner surface of the side wall 38A is a reflective surface. In the present embodiment, the side wall 38A is an inclined and curved wall surface, and the opposite sides of the side wall 38A are asymmetric (with different curvatures). Specifically, the side wall 38A has a first side 39A away from the center line 97 (see Figure 2 ) and a second side 39B close to the center line 97. The side wall 38A has a first curvature on the first side 39A, and the side wall 38A has a second curvature on the second side 39B, and the second curvature is not equal to the first curvature. In some embodiments, the second curvature is less than the first curvature.

[0107] As shown Figure 7 in FIG. 2, in some embodiments, the side wall 38A has a first base angle on the first side 39A, and the side wall 38A has a second base angle on the second side 39B, and the angle B2 of the second base angle is not equal to the angle B1 of the first base angle. In some embodiments, the angle B2 of the second base angle is less than the angle B1 of the first base angle. In some embodiments, the first base angle can be an obtuse angle (i.e., the angle B1 can be greater than ninety degrees).

[0108] In summary, the material accelerated aging simulation test system disclosed herein includes two symmetrically arranged xenon lamps and two ultraviolet lamps, which can provide an irradiation intensity of at least 1500 W / m² and an illuminance uniformity of no more than ±15% for the cubic light box used to accommodate material samples. Through such a high-energy and high-uniformity light source design, the aging test time of materials can be significantly shortened. The material accelerated aging simulation test system disclosed herein further includes a water-cooling circulation device and an air-cooling device, which can ensure that the material samples are in an environment with an appropriate temperature and can also assist in dissipating heat from the light source to prevent the light source from overheating.

[0109] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A material accelerated aging simulation test system, characterized in that, it includes: a cubic light box having a bottom surface for carrying a material sample, a top surface through which light can penetrate, and a continuous wall connecting between the bottom surface and the top surface; a light source module disposed on the cubic light box and including two xenon lamps and two ultraviolet light fixtures. The two ultraviolet light fixtures are arranged along a center line of the top surface, and the two xenon lamps are arranged in parallel on both sides of the two ultraviolet light fixtures. Each of the two ultraviolet light fixtures includes a reflective eccentric lamp barrel and an ultraviolet light source disposed in the reflective eccentric lamp barrel. The light source module is configured to provide an irradiation intensity of at least 1500 watts per square meter and an illuminance uniformity of not more than plus or minus 15% to the cubic light box; and a temperature control module including a water-cooled circulation device and an air-cooling device. The water-cooled circulation device is connected to the two xenon lamps and is configured to drive a cooling liquid to circulate and flow through the two xenon lamps. The air-cooling device is configured to drive an air flow to flow through an internal space of the cubic light box.

2. The material accelerated aging simulation test system according to claim 1, characterized in that, it further includes at least one light intensity sensor and a control module. The at least one light intensity sensor is disposed on the bottom surface and is located in an effective irradiation area of the bottom surface. The at least one light intensity sensor is configured to provide at least one light intensity signal. The control module is communicatively connected to the at least one light intensity sensor and the light source module and is configured to increase or decrease the output of the light source module according to the at least one light intensity signal.

3. The material accelerated aging simulation test system according to claim 2, characterized in that, there are multiple of the at least one light intensity sensor, and these light intensity sensors are arranged at the corners and the center of the effective irradiation area.

4. The material accelerated aging simulation test system according to claim 1, characterized in that, it further includes at least one thermometer and a control module. The at least one thermometer is disposed in the cubic light box and is configured to provide at least one temperature signal. The control module is communicatively connected to the at least one thermometer and the temperature control module and is configured to control the heat dissipation efficiency of the temperature control module according to the at least one temperature signal.

5. The material accelerated aging simulation test system according to claim 1, characterized in that, the reflective eccentric lamp barrel has a top end, a light outlet, and a side wall connecting between the top end and the light outlet, and the reflective eccentric lamp barrel gradually expands from the top end towards the light outlet. The ultraviolet light source is disposed at the top end. The side wall has opposite sides, and the slopes or curvatures of the side wall at the two sides are different.

6. The material accelerated aging simulation test system according to claim 1, characterized in that, it further includes a light source switch controller. The light source switch controller is electrically connected to the two xenon lamps and the two ultraviolet light fixtures and is configured to turn on the two xenon lamps and the two ultraviolet light fixtures simultaneously, only turn on the two xenon lamps, or only turn on the two ultraviolet light fixtures.

7. The material accelerated aging simulation test system according to claim 1, characterized in that, Further comprising at least one irradiation angle adjusting mechanism, wherein at least one of the two ultraviolet lamps is disposed on the at least one irradiation angle adjusting mechanism.

8. The material accelerated aging simulation test system according to claim 1, characterized in that further comprising a housing having an accommodation space, the light source module being disposed in the accommodation space, wherein the air cooling device is further configured to drive the air flow through the accommodation space.

9. The material accelerated aging simulation test system according to claim 1, characterized in that the continuous wall of the cubic light box has a diffuse reflection surface.

10. The material accelerated aging simulation test system according to claim 1, characterized in that further comprising at least one filter disposed between the cubic light box and the light source module.

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