A method and device for predicting material aging failure under damp, hot and vibration conditions

Abstract

The present invention provides a method and device for predicting material aging failure under wet, hot and vibratory conditions, belonging to the technical field of composite material failure prediction. The invention obtains the aging parameters of the test piece and the relationship between the life characteristics of the test piece and time by building a material aging test system, and establishes a test system for coupling the three physical fields of wet, hot and force. The test data is more comprehensive. At the same time, a comparative analysis is performed with the operation and maintenance database of the corresponding components. The optimized equivalent acceleration coefficient is obtained through the MSE optimization method, and then the relationship between the life characteristics and time of the components in the actual service environment is obtained. The failure of the component aging is predicted, and the accuracy of the prediction is improved. Finally, the MSE optimization method uses multiple components in different environments to improve the universality of the environment.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material failure prediction, and in particular to a method and device for predicting material aging failure under damp, hot and vibration conditions. Background Art

[0002] In recent years, composite materials have been widely used in aircraft structural design due to their advantages such as light weight, high strength and corrosion resistance, especially in engine nacelle components such as air inlets, fairings, thrust reversers and noise reduction linings.

[0003] As aircraft age, nacelle composite components gradually develop damage due to harsh service environments (such as high temperature, high humidity, and vibration). Delamination occurs within the composite material and is difficult to detect when the area is small. For example, when damage is detected in the reverse thrust sliding door of the engine nacelle, the delamination area has expanded to exceed the maintenance manual standards, resulting in unplanned aircraft downtime, replacement of nacelle components, or repairs. The high maintenance costs significantly increase the operating costs of airlines. Most existing composite failure prediction methods are targeted at single humid and hot environments or single fatigue life predictions. Failure prediction methods based on the coupling of the three physical fields of moisture, heat, and force, especially those simulating the service environment of the engine nacelle, have not been reported. At the same time, existing technologies have problems with universality for different batches of aircraft and different service environments, as well as low prediction accuracy. Therefore, there is an urgent need to develop a failure prediction method for composite components to achieve the transition from condition-based maintenance to predictive maintenance. Summary of the Invention

[0004] In order to solve the problems in the above-mentioned prior art, the present invention provides a method and device for predicting material aging failure under wet, hot and vibrating conditions. The invention obtains the aging parameters of the test piece and the relationship between the life characteristics of the test piece and time by building a material aging test system, and establishes a test system that couples the three physical fields of wet, hot and force. The test data is more comprehensive. At the same time, it is compared and analyzed with the operation and maintenance database of the corresponding components. The optimized equivalent acceleration coefficient is obtained through the MSE (Mean Squared Error) optimization method, and then the relationship between the life characteristics and time of the components in the actual service environment is obtained. The failure of the component aging is predicted, and the accuracy of the prediction is improved. Finally, the MSE optimization method uses multiple components in different environments to improve the universality of the environment. To achieve the above purpose, the technical solution is as follows:

[0005] In one aspect, the present invention provides a method for predicting material aging failure under damp, hot, and vibration conditions, the method comprising:

[0006] S1. Build a material aging test device and a measuring device to obtain a material aging test system;

[0007] S2. Installing the specimen into the material aging test system to obtain the aging parameters of the specimen and the relationship between the life characteristics of the specimen and time;

[0008] S3. Query the operation and maintenance database of the component corresponding to the test piece to obtain the failure parameters of the component under the actual service environment;

[0009] S4. Based on the aging parameters of the specimen and the failure parameters of the component in the actual service environment, the MSE optimization method is used to obtain the optimal equivalent acceleration factor;

[0010] S5. Obtaining a relationship between the life characteristics and time of the component in an actual service environment based on the optimized equivalent acceleration factor and the relationship between the life characteristics and time of the specimen;

[0011] S6. Obtain failure prediction data of the component based on the relationship between the life characteristics of the component in an actual service environment and time.

[0012] Optionally, the material aging test device comprises:

[0013] Anchors, used to support the material aging test device;

[0014] Support platform, used to fix and support the water bath;

[0015] The water bath is used to provide a hot and humid environment for the specimen;

[0016] A test piece pressure head is used to provide a vibration environment for the test piece;

[0017] A spring used to maintain the stability of the vibration platform in the material aging test device;

[0018] A vibration platform, used to generate vibration and transmit it to the test piece indenter;

[0019] A vibration motor, used for driving the vibration platform to generate vibration;

[0020] A spring baffle, used to limit the range of motion of the spring;

[0021] A double-ended threaded rod is used for fixing the foot, the supporting platform, the spring, the vibration platform and the spring baffle.

[0022] Optionally, in S2, the specimen is installed in the material aging test system to obtain aging parameters of the specimen and the relationship between the life characteristics of the specimen and time, including:

[0023] S21, fixing the specimen into the water bath, adjusting the height of the specimen pressure head so that the specimen pressure head presses down on the specimen, and obtaining a material aging test device with the specimen;

[0024] S22. According to the material aging test device with the test piece, the measuring device performs regular measurements to obtain the aging parameters of the test piece and the relationship between the life characteristics of the test piece and time.

[0025] Optionally, the aging parameters of the specimen include: accelerated aging time of the specimen, temperature of the specimen, and humidity of the specimen.

[0026] Optionally, the life characteristics of the specimen include: any one or more of the mechanical performance indicators of the specimen or the moisture absorption of the specimen.

[0027] Optionally, in S3, the operation and maintenance database of the component corresponding to the test piece is queried to obtain failure parameters of the component in the actual service environment, including:

[0028] S31. Query the operation and maintenance database of the component corresponding to the test piece to obtain the working time of the component in the actual service environment;

[0029] S32, querying the operation and maintenance database of the component corresponding to the test piece to obtain the ambient temperature and ambient humidity of the component;

[0030] S33. Obtain failure parameters of the component in the actual service environment according to the working time of the component in the actual service environment, the ambient temperature of the component, and the ambient humidity of the component.

[0031] Optionally, in S4, based on the aging parameters of the specimen and the failure parameters of the component in the actual service environment, an MSE optimization method is used to obtain an optimized equivalent acceleration factor, including:

[0032] S41. Based on the aging parameters of the specimen and the failure parameters of the component in the actual service environment, the relationship between the time acceleration coefficient and the equivalent acceleration coefficient is obtained through formula (1).

[0033] (1)

[0034] Where, is the time acceleration coefficient, is the accelerated aging time of the specimen, is the aging time of the component in actual service environment, is the accelerated aging temperature of the specimen, is the aging temperature of the component in actual service environment, is the accelerated aging humidity of the specimen, is the aging humidity of the component in the actual service environment, C is the equivalent acceleration coefficient;

[0035] S42. Obtaining a relationship between the equivalent accelerated aging time and the equivalent acceleration coefficient of a plurality of components based on the relationship between the time acceleration coefficient and the equivalent acceleration coefficient and the working time of the components in an actual service environment;

[0036] S43, based on the relationship between the equivalent accelerated aging time and the equivalent acceleration coefficient of the multiple components, construct the MSE function through formula (2), select the equivalent acceleration coefficient corresponding to the minimum value of the MSE function, and obtain the optimized equivalent acceleration coefficient.

[0037] (2)

[0038] Where, is the equivalent accelerated aging time of the component, is the moisture absorption saturation time of the specimen, and n is the number of components.

[0039] Optionally, in S5, obtaining the relationship between the life characteristics and time of the component in an actual service environment according to the optimized equivalent acceleration coefficient and the relationship between the life characteristics and time of the specimen includes:

[0040] S51. Based on the optimized equivalent acceleration coefficient and the relationship between the life characteristics of the specimen and time, an environmental equivalent method is used to obtain a relative relationship between the life characteristics of the component and time.

[0041] S52. Based on the relative relationship between the life characteristics of the component and time, a normalization method is used to obtain the relationship between the life characteristics of the component and time in an actual service environment.

[0042] In another aspect, the present invention provides a device for predicting material aging failure under conditions of humidity, heat, and vibration. The system is applied to a method for predicting material aging failure under conditions of humidity, heat, and vibration. The device comprises:

[0043] Footings, support platform, water bath, specimen indenter, spring, vibration platform, vibration motor, spring baffle and double-ended threaded rod;

[0044] The foot is composed of a carbon steel cover and a shock-absorbing rubber pad, and is fixedly connected to the double-threaded rod through a stamping process; the double-threaded rod passes through the through holes at the four corners of the support platform, and the support platform is fixed to the lower end of the double-threaded rod; the water bath is placed above the support platform; the spring is nested in the bare rod area above the double-threaded rod; the spring is nested above the vibration platform, and the spring extends to the threaded area of the double-threaded rod, and the spring baffle is screwed in through the thread until it rests against the spring; the vibration motor and the specimen pressure head are fixedly installed on the vibration platform, and the specimen pressure head is facing the middle position of the specimen.

[0045] Optionally, the water bath comprises: a specimen fixture and a specimen fixture fixing base;

[0046] The specimen fixture is a groove structure, the base and side wall of the specimen fixture have threaded holes, the specimen fixture fixed base has threaded holes corresponding to the specimen fixture, fixedly connecting the specimen fixture and the specimen fixture fixed base.

[0047] Compared with the prior art, the technical solution of the present invention has at least the following beneficial effects:

[0048] On the one hand, the above scheme obtains the aging parameters of the specimens and the relationship between the life characteristics of the specimens and time by building a material aging test system, and establishes a test system for the coupling of the three physical fields of moisture, heat and force. The test data is more comprehensive. On the other hand, it is compared and analyzed with the operation and maintenance database of the corresponding components, and the optimal equivalent acceleration coefficient is obtained through the MSE optimization method, and then the relationship between the life characteristics and time of the components in the actual service environment is obtained, and the failure prediction of the component aging is performed, which improves the accuracy of the prediction. Thirdly, the MSE optimization method uses multiple components in different environments to improve the universality of the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0050] Figure 1 is a flow chart of an embodiment of a method for predicting material aging failure under damp, hot and vibration conditions of the present invention;

[0051] Figure 2 This is a flow chart of obtaining the relationship between the aging parameters of a specimen and the life characteristics of the specimen and time in an embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention;

[0052] Figure 3 This is a flow chart of obtaining failure parameters of components under actual service environment in an embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention;

[0053] Figure 4 This is a flow chart for obtaining an optimized equivalent acceleration factor in an embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention;

[0054] Figure 5 This is a flow chart of obtaining the relationship between the life characteristics of a component under an actual service environment and time in an embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention;

[0055] Figure 6 is a graph showing the relationship between the life characteristics of a specimen and time in an embodiment of the method for predicting material aging failure under damp heat and vibration conditions of the present invention;

[0056] Figure 7 is a graph showing the relationship between the life characteristics of a component in an actual service environment and time in an embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention;

[0057] Figure 8 2 is a schematic structural diagram of an embodiment of a device for predicting material aging failure under damp, hot and vibration conditions according to the present invention;

[0058] Figure 9 2. It is a top view of the internal structure of a water bath pot in an embodiment of the device for predicting material aging failure under damp, hot and vibration conditions of the present invention;

[0059] Figure 10 It is a schematic diagram of the test piece fixture structure in an embodiment of the material aging failure prediction device under moist heat and vibration conditions of the present invention.

[0060] Explanation of the numbers in the figure: foot 1, support platform 2, water bath 3, test piece pressure head 4, spring 5, vibration platform 6, vibration motor 7, spring baffle 8, double-headed threaded rod 9, test piece fixture 301, test piece fixture fixed base 302. DETAILED DESCRIPTION

[0061] The technical solution of the present invention is described below in conjunction with the accompanying drawings.

[0062] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as an "exemplary" in the present invention should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of the word "exemplary" is intended to present concepts in a concrete manner. Furthermore, in the embodiments of the present invention, "and / or" can mean both or either of the two.

[0063] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0064] The material selected in this example is a carbon fiber / epoxy resin double-layer plain weave fabric, and the accelerated aging test piece is prepared.

[0065] like Figure 1The flowchart of an embodiment of the method for predicting material aging failure under damp heat and vibration conditions of the present invention is shown. The present invention provides a method for predicting material aging failure under damp heat and vibration conditions. The method is implemented by a device for predicting material aging failure under damp heat and vibration conditions. The method includes:

[0066] S1. Build a material aging test device and a measuring device to obtain a material aging test system;

[0067] Specifically, the material aging test device includes:

[0068] Anchors, used to support the material aging test device;

[0069] Support platform, used to fix and support the water bath;

[0070] The water bath is used to provide a hot and humid environment for the specimen;

[0071] A test piece pressure head is used to provide a vibration environment for the test piece;

[0072] A spring used to maintain the stability of the vibration platform in the material aging test device;

[0073] A vibration platform, used to generate vibration and transmit it to the test piece indenter;

[0074] A vibration motor, used for driving the vibration platform to generate vibration;

[0075] A spring baffle, used to limit the range of motion of the spring;

[0076] A double-ended threaded rod is used for fixing the foot, the supporting platform, the spring, the vibration platform and the spring baffle.

[0077] S2. Installing the specimen into the material aging test system to obtain the aging parameters of the specimen and the relationship between the life characteristics of the specimen and time;

[0078] Specifically, if Figure 2 The flowchart of obtaining the relationship between the aging parameters of a specimen and the life characteristics of the specimen and time in the embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention is shown. In S2, the specimen is installed in the material aging test system to obtain the aging parameters of the specimen and the relationship between the life characteristics of the specimen and time, including:

[0079] S21, fixing the specimen into the water bath, adjusting the height of the specimen pressure head so that the specimen pressure head presses down on the specimen, and obtaining a material aging test device with the specimen;

[0080] S22. According to the material aging test device with the test piece, the measuring device performs regular measurements to obtain the aging parameters of the test piece and the relationship between the life characteristics of the test piece and time.

[0081] The aging parameters of the specimen include: the accelerated aging time of the specimen, the temperature of the specimen and the humidity of the specimen.

[0082] The life characteristics of the specimen include: any one or more of the mechanical performance indicators of the specimen or the moisture absorption of the specimen.

[0083] Furthermore, the interlaminar shear strength was selected as the life characteristic of the specimen, and the aging environment was set to a 70°C water bath and a vibration motor vibration frequency of 50 Hz. The interlaminar shear strength of the specimen was measured and recorded at regular intervals, and the results were as follows: Figure 6 The graph shows the relationship between the life characteristics of the specimen and time in an embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention.

[0084] S3. Query the operation and maintenance database of the component corresponding to the test piece to obtain the failure parameters of the component under the actual service environment;

[0085] Specifically, if Figure 3 The flowchart of obtaining the failure parameters of a component in an actual service environment in the embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention is shown. In step S3, the operation and maintenance database of the component corresponding to the test piece is queried to obtain the failure parameters of the component in the actual service environment, including:

[0086] S31. Query the operation and maintenance database of the component corresponding to the test piece to obtain the working time of the component in the actual service environment;

[0087] S32, querying the operation and maintenance database of the component corresponding to the test piece to obtain the ambient temperature and ambient humidity of the component;

[0088] S33. Obtain failure parameters of the component in the actual service environment according to the working time of the component in the actual service environment, the ambient temperature of the component, and the ambient humidity of the component.

[0089] Furthermore, we retrieved maintenance data for the same component on five aircraft belonging to an airline. The components had been in service for extended periods in hot and humid environments, exhibiting typical damage such as heat damage, fastener damage, and debonding. The service periods for these components were October 27, 1998, to November 1, 2000; March 1, 2008, to July 1, 2013; September 28, 2010, to October 3, 2012; June to August 2005; and March to August 2009, respectively, for a total service time of 24 months, 64 months, 24 months, 3 months, and 6 months, respectively. The total time span was seven years, with each month assuming 30 days. We first calculated the monthly average temperature and humidity for the seven years, namely, the monthly average temperature and humidity from 1998 to 2000 and from 2008 to 2013, as shown in Table 1.

[0090] Table 1 Monthly average temperature and humidity in the area where five aircraft of an airline are located for seven years

[0091]

[0092] S4. Based on the aging parameters of the specimen and the failure parameters of the component in the actual service environment, the MSE optimization method is used to obtain the optimal equivalent acceleration factor;

[0093] Specifically, if Figure 4 The flowchart of obtaining the optimized equivalent acceleration coefficient in the embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention is shown. In S4, the optimized equivalent acceleration coefficient is obtained by using the MSE optimization method based on the aging parameters of the specimen and the failure parameters of the component under actual service environment, including:

[0094] S41. Based on the aging parameters of the specimen and the failure parameters of the component in the actual service environment, the relationship between the time acceleration coefficient and the equivalent acceleration coefficient is obtained through formula (1).

[0095] (1)

[0096] Where, is the time acceleration coefficient, is the accelerated aging time of the specimen, is the aging time of the component in actual service environment, is the accelerated aging temperature of the specimen, is the aging temperature of the component in actual service environment, is the accelerated aging humidity of the specimen, is the aging humidity of the component in the actual service environment, C is the equivalent acceleration coefficient;

[0097] S42. Obtaining a relationship between the equivalent accelerated aging time and the equivalent acceleration coefficient of a plurality of components based on the relationship between the time acceleration coefficient and the equivalent acceleration coefficient and the working time of the components in an actual service environment;

[0098] Furthermore, since each month is calculated as 30 days, the aging time of the components in the actual service environment can be calculated. =30, taking the components of the first aircraft as an example, since they have been in service for 24 months since October, the equivalent accelerated aging time of the components is It should be the sum of 24 months from October to the equivalent acceleration time, which can be obtained by formula (3):

[0099] (3)

[0100] The same method can be used to obtain the equivalent accelerated aging time of the 2nd to 5th aircraft components. ~ .

[0101] S43, based on the relationship between the equivalent accelerated aging time and the equivalent acceleration coefficient of the multiple components, construct the MSE function through formula (2), select the equivalent acceleration coefficient corresponding to the minimum value of the MSE function, and obtain the optimized equivalent acceleration coefficient.

[0102] (2)

[0103] Where, is the equivalent accelerated aging time of the component, is the moisture absorption saturation time of the specimen, and n is the number of components.

[0104] Furthermore, in order to take into account the differences between different aircraft batches and different environmental conditions, the MSE function is introduced to solve the optimal solution and obtain the optimal equivalent acceleration coefficient C min =106.36.

[0105] S5. Obtaining a relationship between the life characteristics and time of the component in an actual service environment based on the optimized equivalent acceleration factor and the relationship between the life characteristics and time of the specimen;

[0106] Specifically, if Figure 5 The flowchart of the embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention for obtaining the relationship between the life characteristics and time of a component in an actual service environment is shown. In S5, the relationship between the life characteristics and time of the component in the actual service environment is obtained based on the optimized equivalent acceleration factor and the relationship between the life characteristics and time of the specimen, including:

[0107] S51. Based on the optimized equivalent acceleration coefficient and the relationship between the life characteristics of the specimen and time, an environmental equivalent method is used to obtain a relative relationship between the life characteristics of the component and time.

[0108] S52. Based on the relative relationship between the life characteristics of the component and time, a normalization method is used to obtain the relationship between the life characteristics of the component and time in an actual service environment.

[0109] Furthermore, a total of 65 days of accelerated aging test was carried out. A batch of test pieces were taken out every 10 days for interlaminar shear strength test. The law of interlaminar shear strength change of the test pieces under the accelerated aging environment of damp heat and vibration with aging time was obtained. Through the environmental equivalent method and normalization processing, the following was obtained: Figure 7 The graph shown is a relationship curve between the life characteristics of a component in an actual service environment and time in an embodiment of the material aging failure prediction method under damp heat and vibration conditions of the present invention.

[0110] S6. Obtain failure prediction data of the component based on the relationship between the life characteristics of the component in an actual service environment and time.

[0111] Specifically, the safety threshold coefficient is selected as 0.77, and it is found that the safety threshold coefficient is reached below the safety threshold coefficient around the 376th day, indicating that the component should be inspected and repaired before then.

[0112] like Figure 8 The schematic diagram of the structure of an embodiment of the material aging failure prediction device under moist heat and vibration conditions of the present invention is shown. The present invention provides a material aging failure prediction device under moist heat and vibration conditions, which is applied to a material aging failure prediction method under moist heat and vibration conditions. The device includes: a foot 1, a support platform 2, a water bath 3, a test piece pressure head 4, a spring 5, a vibration platform 6, a vibration motor 7, a spring baffle 8 and a double-headed threaded rod 9;

[0113] The foot 1 is composed of a carbon steel cover and a shock-absorbing rubber pad, and is fixedly connected to the double-headed threaded rod 9 through a stamping process; the double-headed threaded rod 9 passes through the through holes at the four corners of the support platform 2, and the support platform 2 is fixed to the lower end of the double-headed threaded rod 9; the water bath 3 is placed above the support platform 2; the spring 5 is nested in the light rod area above the double-headed threaded rod 9; the spring 5 is nested above the vibration platform 6, and the spring 5 is extended to the threaded area of the double-headed threaded rod 9, and the spring baffle 8 is screwed in through the thread until it is against the spring 5; the vibration platform 6 is fixedly installed with the vibration motor 7 and the specimen pressure head 4, and the specimen pressure head 4 is facing the middle position of the specimen.

[0114] Specifically, if Figure 9The top view of the internal structure of the water bath pot in the embodiment of the material aging failure prediction device under the conditions of heat and vibration of the present invention is shown as follows Figure 10 The schematic diagram of the specimen fixture structure in the embodiment of the device for predicting material aging failure under damp heat and vibration conditions of the present invention is shown. The water bath 3 includes: a specimen fixture 301 and a specimen fixture fixing base 302;

[0115] The specimen fixture 301 is a groove structure. The base and side wall of the specimen fixture 301 have threaded holes. The specimen fixture fixed base 302 has threaded holes corresponding to the specimen fixture 301, which fixedly connect the specimen fixture 301 and the specimen fixture fixed base 302.

[0116] The present invention provides a method and apparatus for predicting material aging failure under wet, hot and vibrating conditions. The invention obtains the aging parameters of the test piece and the relationship between the life characteristics of the test piece and time by building a material aging test system, and establishes a test system for coupling the three physical fields of moisture, heat and force. The test data is more comprehensive. Secondly, a comparative analysis is performed with the operation and maintenance database of the corresponding components, and the optimized equivalent acceleration coefficient is obtained through the MSE optimization method, and then the relationship between the life characteristics and time of the components in the actual service environment is obtained, and the failure of the component aging is predicted, thereby improving the accuracy of the prediction. Finally, the MSE optimization method uses multiple components in different environments to improve the universality of the environment.

[0117] It will be appreciated that the present invention is described by way of the above embodiments and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. It will be appreciated by those skilled in the art that various changes or equivalent replacements may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application fall within the scope protected by the present invention.

Claims

1. A method for predicting material aging failure under damp, hot and vibration conditions, characterized in that: The method comprises: S1. Build a material aging test device and a measuring device to obtain a material aging test system; S2. Installing the specimen into the material aging test system to obtain aging parameters of the specimen and the relationship between the life characteristics of the specimen and time; S3. Querying the operation and maintenance database of the component corresponding to the test piece to obtain failure parameters of the component under actual service environment; S4. According to the aging parameters of the specimen and the failure parameters of the component in the actual service environment, the MSE optimization method is used to obtain the optimal equivalent acceleration factor; S5. Obtaining a relationship between the life characteristics and time of a component in an actual service environment based on the optimized equivalent acceleration coefficient and the relationship between the life characteristics and time of the test piece; S6. Obtaining failure prediction data of the component based on the relationship between the life characteristics of the component in an actual service environment and time; The material aging test device comprises: a foot, a support platform, a water bath, a test piece pressure head, a spring, a vibration platform, a vibration motor, a spring baffle and a double-ended threaded rod; The S2 includes: S21, fixing the specimen into the water bath, adjusting the height of the specimen pressure head so that the specimen pressure head presses down the specimen, and obtaining a material aging test device with the specimen. S22. Using the material aging test device with the specimen, periodically measuring with the measuring device to obtain aging parameters of the specimen and a relationship between the life characteristics of the specimen and time; The S4 includes: S41. According to the aging parameters of the specimen and the failure parameters of the component in the actual service environment, the relationship between the time acceleration coefficient and the equivalent acceleration coefficient is obtained by formula (1). （1） Where, is the time acceleration coefficient, is the accelerated aging time of the specimen, is the aging time of the component in actual service environment, is the accelerated aging temperature of the specimen, is the aging temperature of the component in actual service environment, is the accelerated aging humidity of the specimen, is the aging humidity of the component in the actual service environment, C is the equivalent acceleration factor, S42, according to the relationship between the time acceleration coefficient and the equivalent acceleration coefficient and the working time of the components in the actual service environment, obtain the relationship between the equivalent accelerated aging time and the equivalent acceleration coefficient of multiple components, S43, constructing an MSE function according to the relationship between the equivalent accelerated aging time and the equivalent acceleration coefficient of the plurality of components using formula (2), selecting the equivalent acceleration coefficient corresponding to the minimum value of the MSE function, and obtaining the optimized equivalent acceleration coefficient, （2） Where, is the equivalent accelerated aging time of the component, is the moisture absorption saturation time of the specimen, n is the number of components; The MSE function takes into account the differences in different environmental conditions and obtains the optimized equivalent acceleration coefficient.

2. The material aging failure prediction method under damp heat and vibration conditions according to claim 1 is characterized in that: The material aging test device comprises: The footing is used to support the material aging test device; The supporting platform is used to fix and support the water bath; The water bath is used to provide a hot and humid environment for the specimen; The test piece pressure head is used to provide a vibration environment for the test piece; The spring is used to maintain the stability of the vibration platform in the material aging test device; The vibration platform is used to generate vibration and transmit it to the test piece indenter; The vibration motor is used to drive the vibration platform to generate vibration; The spring baffle is used to limit the movement range of the spring; The double-headed threaded rod is used to fix the foot, the supporting platform, the spring, the vibration platform and the spring baffle.

3. The material aging failure prediction method under damp heat and vibration conditions according to claim 1 is characterized in that: The aging parameters of the specimen include: the accelerated aging time of the specimen, the temperature of the specimen, and the humidity of the specimen.

4. The material aging failure prediction method under damp heat and vibration conditions according to claim 1 is characterized in that: The life characteristics of the specimen include: any one or more of the mechanical performance indicators of the specimen or the moisture absorption of the specimen.

5. The material aging failure prediction method under damp heat and vibration conditions according to claim 1 is characterized in that: In S3, the operation and maintenance database of the component corresponding to the test piece is queried to obtain failure parameters of the component under actual service environment, including: S31, querying the operation and maintenance database of the component corresponding to the test piece to obtain the working time of the component in the actual service environment; S32, querying the operation and maintenance database of the component corresponding to the test piece to obtain the ambient temperature and ambient humidity of the component; S33 , obtaining failure parameters of the component in the actual service environment according to the working time of the component in the actual service environment, the ambient temperature of the component, and the ambient humidity of the component.

6. The material aging failure prediction method under damp heat and vibration conditions according to claim 1 is characterized in that: The step S5, based on the optimized equivalent acceleration coefficient and the relationship between the life characteristics and time of the test piece, obtains the relationship between the life characteristics and time of the component in the actual service environment, including: S51. According to the optimized equivalent acceleration coefficient and the relationship between the life characteristics of the specimen and time, an environmental equivalent method is used to obtain a relative relationship between the life characteristics of the component and time; S52. According to the relative relationship between the life characteristics of the component and time, a normalization method is used to obtain the relationship between the life characteristics of the component and time in an actual service environment.

7. A device for predicting material aging failure under conditions of humidity, heat, and vibration, wherein the device implements the method for predicting material aging failure under conditions of humidity, heat, and vibration according to any one of claims 1 to 6, characterized in that: The device comprises: a foot, a support platform, a water bath, a specimen pressure head, a spring, a vibration platform, a vibration motor, a spring baffle and a double-ended threaded rod; The foot is composed of a carbon steel cover and a shock-absorbing rubber pad, and is fixedly connected to the double-headed threaded rod through a stamping process; the double-headed threaded rod passes through the through holes at the four corners of the support platform, and the support platform is fixed to the lower end of the double-headed threaded rod; the water bath is placed above the support platform; the spring is nested in the light rod area above the double-headed threaded rod; the spring is nested above the vibration platform, and the spring is extended to the threaded area of the double-headed threaded rod, and the spring baffle is screwed in through the thread until it rests against the spring; the vibration motor and the specimen pressure head are fixedly installed on the vibration platform, and the specimen pressure head is facing the middle position of the specimen.

8. The material aging failure prediction device under damp, hot and vibration conditions according to claim 7, characterized in that: The water bath comprises: a specimen fixture and a specimen fixture fixing base; The specimen fixture is a groove structure, the base and side wall of the specimen fixture have threaded holes, the specimen fixture fixing base has threaded holes corresponding to the specimen fixture, and the specimen fixture and the specimen fixture fixing base are fixedly connected.

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