A coating failure analysis method, device and equipment for filtering and element diffusion

Abstract

The present invention relates to the field of calculation of interfacial material property transfer, and particularly discloses a method, device, equipment and computer-readable storage medium for coating failure analysis of filtration and element diffusion, which includes receiving element diffusion boundary conditions; the element diffusion boundary conditions include diffusion coefficient, boundary concentration, temperature and thermal exposure time; determining the target element concentration according to the element diffusion boundary conditions; determining the target bonding strength according to the target element concentration through a pre-stored interfacial strength degradation function of coupled element concentrations; inputting the target bonding strength into a finite element model of a tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions. The present invention calculates the target element concentration in real time through the element diffusion boundary conditions, provides a more accurate prediction for the interfacial strength evaluation of coatings in a long-term high-temperature service environment, and improves the accuracy of coating failure analysis.

Description

Technical Field

[0001] The present invention relates to the field of calculation of interfacial material property transfer, and particularly to a method, device, equipment and computer-readable storage medium for analyzing coating failure involving element diffusion filtering. Background Art

[0002] Thermal barrier coatings are widely used in the hot-end components of modern aeroengines to extend the service life and thermal efficiency of the components. However, during long-term and high-temperature service, due to the diffusion of interface elements, the Al element in the nearby material shows a depletion effect, causing the interface oxidation product to change from a dense and homogeneous structure to a loose and porous structure, resulting in a degradation behavior of the interface bonding strength related to the element concentration, and leading to a decrease in the interface strength reserve coefficient of the coating. However, the interfacial cohesive force model provided by current commercial finite element software is relatively simple and cannot describe the interface strength degradation behavior caused by element diffusion during the high-temperature service of thermal barrier coatings, and cannot ensure that the coating always has a sufficient interface strength reserve coefficient during long-term service, seriously affecting its safe use.

[0003] Therefore, to make up for the deficiencies of the above technologies, it is necessary to develop a calculation method for the interface bonding strength of coatings that can simultaneously consider the influence of interface element diffusion, so as to accurately predict the interface strength reserve coefficient and failure conditions of the coating in a long-term high-temperature service environment, and provide technical support for its safe and reliable use. Summary of the Invention

[0004] The purpose of the present invention is to provide a method, device, equipment and computer-readable storage medium for analyzing coating failure involving element diffusion filtering, so as to solve the problem of insufficient accuracy in coating failure analysis in the prior art.

[0005] To solve the above technical problems, the present invention provides a method for analyzing coating failure involving element diffusion filtering, including:

[0006] Receiving element diffusion boundary conditions; the element diffusion boundary conditions include diffusion coefficient, boundary concentration, temperature and thermal exposure time;

[0007] Determining the target element concentration according to the element diffusion boundary conditions;

[0008] Determining the target bonding strength according to the target element concentration through a pre-stored interfacial strength degradation function coupled with the element concentration;

[0009] Inputting the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions.

[0010] Optionally, in the coating failure analysis method involving filtering and element diffusion, determining the target element concentration according to the element diffusion boundary conditions includes:

[0011] Determining the target element concentration according to the element diffusion boundary conditions through Fick's second law.

[0012] Optionally, in the coating failure analysis method involving filtering and element diffusion, after obtaining the damage parameter, it further includes:

[0013] Obtaining a visualization result according to the damage parameter and the finite element model.

[0014] Optionally, in the coating failure analysis method involving filtering and element diffusion, the finite element model sequentially includes a ceramic layer, an oxide layer, a bonding layer, and a substrate layer along the thickness direction;

[0015] The contact area between adjacent layers is meshed with finer grids along the thickness direction.

[0016] Optionally, in the coating failure analysis method involving filtering and element diffusion, each uneven part of each layer of the finite element model has a corresponding local coordinate system, the Y-axis direction of the local coordinate system is the normal direction of the layer interface, and inputting the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions:

[0017] Inputting the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model performs coordinate transformation through the local coordinate system according to the target bonding strength and preset boundary conditions, and outputs corresponding damage parameters.

[0018] A coating failure analysis device involving filtering and element diffusion includes:

[0019] A receiving module, configured to receive element diffusion boundary conditions; the element diffusion boundary conditions include a diffusion coefficient, a boundary concentration, a temperature, and a thermal exposure time;

[0020] An element concentration calculation module, configured to determine the target element concentration according to the element diffusion boundary conditions;

[0021] A bonding strength calculation module, configured to determine the target bonding strength according to the target element concentration through a pre-stored interface strength degradation function coupling the element concentration;

[0022] An interface damage assessment module, configured to input the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions.

[0023] Optionally, in the coating failure analysis device for filtering and element diffusion, the element concentration calculation module includes:

[0024] An element diffusion unit, configured to determine the target element concentration according to the element diffusion boundary conditions by Fick's second law.

[0025] Optionally, in the coating failure analysis device for filtering and element diffusion, the interface damage assessment module further includes:

[0026] A visualization unit, configured to obtain a visualization result according to the damage parameter and the finite element model.

[0027] A coating failure analysis device for filtering and element diffusion, including:

[0028] A memory, configured to store a computer program;

[0029] A processor, configured to implement the steps of the coating failure analysis method for filtering and element diffusion as described in any one of the above when executing the computer program.

[0030] A computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the coating failure analysis method for filtering and element diffusion as described in any one of the above are implemented.

[0031] The coating failure analysis method provided by the present invention includes receiving element diffusion boundary conditions; the element diffusion boundary conditions include a diffusion coefficient, a boundary concentration, a temperature, and a thermal exposure time; determining a target element concentration according to the element diffusion boundary conditions; determining a target bonding strength according to the target element concentration through a pre-stored interface strength degradation function coupled with the element concentration; inputting the target bonding strength into a finite element model of a tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions.

[0032] The present invention takes into account that the bonding strength is a parameter that changes continuously with the thermal exposure time (this is because the element concentration changes continuously with the thermal exposure time), so the interface strength degradation function coupled with the element concentration is introduced, that is, the corresponding relationship between the element concentration and the bonding strength. The target element concentration is calculated in real time through the element diffusion boundary conditions to correct the bonding strength in the finite element model in real time. In other words, in the present invention, it is closer to the real situation, providing a more accurate prediction and analysis basis for the interface strength evaluation of the coating in a long-term high-temperature service environment and improving the accuracy of coating failure analysis. The present invention also provides a coating failure analysis device, equipment, and computer-readable storage medium having the above beneficial effects. Brief Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic flow chart of a specific implementation manner of the coating failure analysis method for filtering and element diffusion provided by the present invention;

[0035] Figure 2 It is a schematic flow chart of another specific implementation manner of the coating failure analysis method for filtering and element diffusion provided by the present invention;

[0036] Figure 3 It is a schematic flow chart of yet another specific implementation manner of the coating failure analysis method for filtering and element diffusion provided by the present invention;

[0037] Figure 4 It is a schematic structural diagram of a specific implementation manner of the coating failure analysis device for filtering and element diffusion provided by the present invention. Detailed Description of the Preferred Embodiments

[0038] In order to enable those skilled in the art to better understand the solution of the present invention, the following further detailed description of the present invention will be given in conjunction with the drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention fall within the scope of protection of the present invention.

[0039] The core of the present invention is to provide a coating failure analysis method for filtering and element diffusion. A schematic flow chart of a specific implementation manner thereof is as shown in Figure 1 shown, which is called Specific Embodiment 1 and includes:

[0040] S101: Receive the element diffusion boundary conditions; the element diffusion boundary conditions include diffusion coefficient, boundary concentration, temperature, and thermal exposure time.

[0041] Of course, in addition to the diffusion coefficient, boundary concentration, temperature, and thermal exposure time mentioned above, the element diffusion boundary conditions may also include other parameters, which are not limited herein by the present invention.

[0042] S102: Determine the target element concentration according to the element diffusion boundary conditions.

[0043] The concentration of the target element can be determined through multiple channels, such as using Fick's second law to determine the concentration of the target element.

[0044] S103: According to the concentration of the target element, determine the target bonding strength through a pre-stored interfacial strength degradation function of the coupled element concentration.

[0045] The interfacial strength degradation function of the coupled element concentration refers to the functional relationship between the element concentration and the interfacial strength, and this functional relationship can be obtained from the data of the interfacial element concentration-bonding strength evolution law measured through previous high-temperature oxidation experiments and interfacial bonding strength test experiments.

[0046] Taking the ABAQUS platform as an example, the functional relationship between the element concentration and the interfacial strength can be obtained by programming a user material subroutine plugin (UEL) for calculating the stress and strain of viscoplastic materials in Fortran programming language with reference to the requirements of the secondary development interface of the user subroutine in the ABAQUS platform (ABAQUS software is a general finite element software developed by Dassault Systèmes).

[0047] S104: Input the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs the corresponding damage parameter according to the target bonding strength and the preset boundary conditions.

[0048] The boundary conditions are the boundary conditions such as temperature, displacement, stress, and initial element concentration determined according to the actual load borne in the working environment of the tested thermal barrier coating.

[0049] Taking the ABAQUS platform as an example below, a specific method for calculating the damage parameter is illustrated, including:

[0050] a) Use the ABAQUS software to call the compiled UEL subroutine, allocate the initial calculation analysis step size, and perform calculation analysis on the established finite element model.

[0051] b) The finite element analysis software transmits information such as the coordinates, temperature, thermal exposure time, and element concentration of the material integration points in the oxide layer to the UEL subroutine. The subroutine calculates the increment of the damage parameter of the interface at this analysis step size according to the interfacial element concentration at the corresponding temperature and thermal exposure time obtained from the experiment and the interfacial element concentration - interfacial bonding strength functional relationship, and transmits it back to the finite element analysis software.

[0052] c) The ABAQUS software determines whether the calculated stress and strain fields converge based on the principle of minimum potential energy: if the calculation result converges, the analysis step size remains unchanged and the next calculation step is entered; if the calculation result does not converge, the calculation step size is re-subdivided, and the process returns to step (b) to recalculate the original concentration of the interface and the increment of the damage parameter, and the calculation result is transmitted back to the ABAQUS software for stress and strain calculation again.

[0053] As a preferred implementation, after obtaining the damage parameter, it further includes:

[0054] Based on the damage parameter and the finite element model, a visualization result is obtained. Obtaining the visualization result has stronger reference significance for the engineering evaluation of the interface strength reserve during the long-term high-temperature service of the coating.

[0055] Next, taking the ABAQUS platform as an example, a method for visualizing calculation results is illustrated, including:

[0056] a) Use internal variables to store and transmit the calculation results of each integration point to the ABAQUS finite element.

[0057] b) Separate user-defined variables are created in the UEL to store the calculated interface element concentration, interface damage parameter values, etc.

[0058] c) Use the post-processing module of the ABAUS software to perform visualization processing on the calculation results to obtain a calculation method for the interface bonding strength of the thermal barrier coating considering the influence of interface element diffusion.

[0059] In addition, the finite element model sequentially includes a ceramic layer, an oxide layer, a bonding layer, and a substrate layer along the thickness direction;

[0060] The mesh is refined in the contact area between adjacent layers along the thickness direction. The contact areas between adjacent layers are the interfaces between the ceramic layer and the oxide layer, the interface between the oxide layer and the bonding layer, and the interface between the bonding layer and the substrate layer. The specific thickness range can be determined according to the actual situation. Increasing the mesh density at the interface can significantly improve the calculation accuracy.

[0061] The coating failure analysis method for filtering and element diffusion provided by the present invention receives element diffusion boundary conditions; the element diffusion boundary conditions include diffusion coefficient, boundary concentration, temperature, and thermal exposure time; according to the element diffusion boundary conditions, the target element concentration is determined; according to the target element concentration, through a pre-stored interfacial strength degradation function of coupled element concentrations, the target bonding strength is determined; the target bonding strength is input into the finite element model of the tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions. The present invention takes into account that the bonding strength is a parameter that changes continuously with thermal exposure time (this is because the element concentration changes continuously with thermal exposure time), so the interfacial strength degradation function of coupled element concentrations, that is, the corresponding relationship between element concentration and bonding strength, is introduced. The target element concentration is calculated in real time through the element diffusion boundary conditions, so as to correct the bonding strength in the finite element model in real time. In other words, in the present invention, it is closer to the actual situation, provides a more accurate prediction and analysis basis for the interfacial strength evaluation of coatings in long-term high-temperature service environments, and improves the accuracy of coating failure analysis.

[0062] Using the method provided by the present invention, the interfacial damage accumulation and failure behavior of the thermal barrier coating under the influence of interfacial element diffusion under high-temperature cyclic thermal fatigue load are calculated. The calculation results using the traditional cohesive force model and the cohesive force model established by this method considering the diffusion effect are compared. The latter can better reflect the interfacial strength degradation phenomenon under the influence of interfacial element diffusion and has good convergence, and can simulate the thermo-mechanical-chemical coupling failure and damage behavior of the interface of the thermal barrier coating under high-temperature load.

[0063] On the basis of the specific implementation method 1, the acquisition method of the target element concentration is further limited and improved to obtain the specific implementation method 2. The schematic flow diagram is as Figure 2 shown, including:

[0064] S201: Receive element diffusion boundary conditions; the element diffusion boundary conditions include diffusion coefficient, boundary concentration, temperature, and thermal exposure time.

[0065] Of course, in addition to the diffusion coefficient, boundary concentration, temperature, and thermal exposure time mentioned above, the element diffusion boundary conditions may also include other parameters such as element types and external loads, which are not limited in the present invention.

[0066] S202: According to the element diffusion boundary conditions, through Fick's second law, determine the target element concentration.

[0067] Fick's second law is derived based on the first law by combining with the mass conservation equation, predicting the change of concentration over time caused by diffusion. It is a parabolic partial differential equation. Different from the first law, it can be used to comprehensively describe the non-steady diffusion process where the concentration changes continuously over time.

[0068] S203: According to the target element concentration, determine the target bonding strength through a pre-stored interfacial strength degradation function of the coupled element concentration.

[0069] S204: Input the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs the corresponding damage parameter according to the target bonding strength and the preset boundary conditions.

[0070] The difference between this specific embodiment and the above specific embodiment is that in this specific embodiment, it is limited to calculate the target element concentration using Fick's second law, and the remaining steps are the same as those in the above specific embodiment, and will not be elaborated here.

[0071] This specific embodiment uses Fick's second law to calculate the target element concentration through the element diffusion boundary conditions. Fick's second law has a wide application range and low computational requirements, which can improve the operation efficiency of the algorithm and the versatility of the method at the same time.

[0072] Based on the second specific embodiment, the method for obtaining the target element concentration is further limited and improved to obtain the third specific embodiment, and its process schematic diagram is as Figure 3 shown, including:

[0073] S301: Receive the element diffusion boundary conditions; the element diffusion boundary conditions include diffusion coefficient, boundary concentration, temperature, and thermal exposure time.

[0074] S302: According to the element diffusion boundary conditions, determine the target element concentration through Fick's second law.

[0075] S303: According to the target element concentration, determine the target bonding strength through a pre-stored interfacial strength degradation function of the coupled element concentration.

[0076] For each integration point at the uneven places of each layer of the finite element model, there is a corresponding local coordinate system, and the Y-axis direction of the local coordinate system is the normal direction of the layer interface; input the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model performs coordinate transformation through the local coordinate system according to the target bonding strength and the preset boundary conditions, and outputs the corresponding damage parameter.

[0077] The difference between this specific implementation and the above-mentioned specific implementation is that in this specific implementation, the integral point local coordinate system is used to define the interface direction, and the remaining steps are the same as those in the above-mentioned specific implementation, so they will not be elaborated here.

[0078] In this specific implementation, a local coordinate system is established separately for each uneven integral point. For example, the X-axis direction and Z-axis direction of the local coordinate system are the tangent directions of the point along the interface, and the Y-axis is the normal direction. Using the integral point local coordinate system to define the interface direction enables the program to accurately calculate the interfacial mechanical response of complex geometric shapes, and can calculate the failure and cracking behavior of the complex geometric interface of the thermal barrier coating, improving the applicable range of the coating failure analysis method for filtering and element diffusion provided by the present invention.

[0079] Next, the coating failure analysis device for filtering and element diffusion provided by the embodiments of the present invention will be introduced. The coating failure analysis device for filtering and element diffusion described below can be correspondingly referred to the coating failure analysis method for filtering and element diffusion described above.

[0080] Figure 4 is the structural block diagram of the coating failure analysis device for filtering and element diffusion provided by the embodiments of the present invention. Refer to Figure 4 The coating failure analysis device for filtering and element diffusion may include:

[0081] A receiving module 100 for receiving element diffusion boundary conditions; the element diffusion boundary conditions include diffusion coefficient, boundary concentration, temperature, and thermal exposure time;

[0082] An element concentration calculation module 200 for determining the target element concentration according to the element diffusion boundary conditions;

[0083] A bonding strength calculation module 300 for determining the target bonding strength according to the target element concentration through a pre-stored interfacial strength degradation function of coupled element concentrations;

[0084] An interface damage assessment module 400 for inputting the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions.

[0085] As a preferred implementation, the element concentration calculation module 200 includes:

[0086] An element diffusion unit for determining the target element concentration according to the element diffusion boundary conditions through Fick's second law.

[0087] As a preferred implementation, the interface damage assessment module 400 further includes:

[0088] A visualization unit for obtaining a visualization result according to the damage parameter and the finite element model.

[0089] As a preferred embodiment, each integration point at the uneven part of each layer of the finite element model has a corresponding local coordinate system, the Y-axis direction of the local coordinate system is the interface normal direction of the layer, and the interface damage evaluation module 400 includes:

[0090] A direction correction calculation unit for inputting the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model performs coordinate transformation through the local coordinate system according to the target bonding strength and preset boundary conditions, and outputs the corresponding damage parameter.

[0091] The coating failure analysis device for filtering and element diffusion provided by the present invention includes a receiving module 100 for receiving element diffusion boundary conditions; the element diffusion boundary conditions include a diffusion coefficient, a boundary concentration, a temperature, and a thermal exposure time; an element concentration calculation module 200 for determining a target element concentration according to the element diffusion boundary conditions; a bonding strength calculation module 300 for determining a target bonding strength according to the target element concentration through a pre-stored interface strength degradation function of coupled element concentrations; and an interface damage evaluation module 400 for inputting the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs the corresponding damage parameter according to the target bonding strength and preset boundary conditions. The present invention takes into account that the bonding strength is a parameter that changes continuously with the thermal exposure time (because the element concentration changes continuously with the thermal exposure time), so the interface strength degradation function of the coupled element concentrations, that is, the corresponding relationship between the element concentration and the bonding strength, is introduced, and the target element concentration is calculated in real time through the element diffusion boundary conditions, so as to correct the bonding strength in the finite element model in real time. In other words, in the present invention, it is closer to the actual situation, provides a more accurate prediction and analysis basis for the interface strength evaluation of the coating in a long-term high-temperature service environment, and improves the accuracy of coating failure analysis.

[0092] The coating failure analysis device for filtering and element diffusion in this embodiment is used to implement the foregoing coating failure analysis method for filtering and element diffusion. Therefore, the specific implementation manners in the coating failure analysis device for filtering and element diffusion can be seen in the embodiment part of the coating failure analysis method for filtering and element diffusion in the foregoing text. For example, the receiving module 100, the element concentration calculation module 200, the bonding strength calculation module 300, and the interface damage evaluation module 400 are respectively used to implement steps S101, S102, S103, and S104 in the foregoing coating failure analysis method for filtering and element diffusion. Therefore, the specific implementation manners can be referred to the descriptions of the corresponding individual part embodiments and will not be elaborated here.

[0093] A coating failure analysis device for filtering and element diffusion, comprising:

[0094] A memory for storing a computer program;

[0095] A processor for implementing the steps of the coating failure analysis method for filtering and element diffusion as described in any one of the above when executing the computer program. The coating failure analysis method for filtering and element diffusion provided by the present invention receives element diffusion boundary conditions; the element diffusion boundary conditions include a diffusion coefficient, a boundary concentration, a temperature, and a thermal exposure time; determines a target element concentration according to the element diffusion boundary conditions; determines a target bonding strength according to the target element concentration through a pre-stored interfacial strength degradation function of coupled element concentrations; inputs the target bonding strength into a finite element model of a tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions. The present invention takes into account that the bonding strength is a parameter that continuously changes with the thermal exposure time (this is because the element concentration continuously changes with the thermal exposure time), so the interfacial strength degradation function of the coupled element concentrations, that is, the corresponding relationship between the element concentration and the bonding strength, is introduced, and the target element concentration is calculated in real time through the element diffusion boundary conditions, so as to correct the bonding strength in the finite element model in real time. In other words, in the present invention, it is closer to the real situation, provides a more accurate prediction and analysis basis for the interfacial strength evaluation of the coating in a long-term high-temperature service environment, and improves the accuracy of coating failure analysis.

[0096] A computer-readable storage medium stores a computer program thereon. When the computer program is executed by a processor, it implements the steps of the coating failure analysis method for filtering and element diffusion as described in any of the above. The coating failure analysis method for filtering and element diffusion provided by the present invention includes receiving element diffusion boundary conditions; the element diffusion boundary conditions include a diffusion coefficient, a boundary concentration, a temperature, and a thermal exposure time; determining a target element concentration according to the element diffusion boundary conditions; determining a target bonding strength according to the target element concentration through a pre-stored interface strength degradation function of coupled element concentrations; inputting the target bonding strength into a finite element model of a tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions. The present invention takes into account that the bonding strength is a parameter that continuously changes with the thermal exposure time (this is because the element concentration continuously changes with the thermal exposure time), so the interface strength degradation function of coupled element concentrations, that is, the corresponding relationship between the element concentration and the bonding strength, is introduced. The target element concentration is calculated in real time through the element diffusion boundary conditions, so as to correct the bonding strength in the finite element model in real time. In other words, in the present invention, it is closer to the actual situation, provides a more accurate prediction and analysis basis for the interface strength evaluation of coatings in a long-term high-temperature service environment, and improves the accuracy of coating failure analysis.

[0097] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0098] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0099] Those skilled in the art may further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the present invention.

[0100] The steps of the methods or algorithms described in combination with the embodiments disclosed herein can be directly implemented by hardware, software modules executed by a processor, or a combination of the two. The software modules can be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium well-known in the technical field.

[0101] The above has introduced in detail the method, apparatus, device, and computer-readable storage medium for coating failure analysis of filters and element diffusion provided by the present invention. Specific examples are used herein to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A method for analyzing coating failure of filtering and element diffusion, characterized in that including: receiving the element diffusion boundary conditions; the element diffusion boundary conditions include diffusion coefficient, boundary concentration, temperature and thermal exposure time; determining the target element concentration according to the element diffusion boundary conditions; determining the target bonding strength according to the target element concentration through a pre-stored interfacial strength degradation function coupled with the element concentration; inputting the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions; each integration point at the uneven places of each layer of the finite element model has a corresponding local coordinate system, the Y-axis direction of the local coordinate system is the interface normal direction of the layer, and inputting the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions: inputting the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model performs coordinate transformation through the local coordinate system according to the target bonding strength and preset boundary conditions, and outputs corresponding damage parameters.

2. The coating failure analysis method for filtering and element diffusion as described in claim 1, characterized in that, The determining the target element concentration according to the element diffusion boundary conditions includes: determining the target element concentration according to the element diffusion boundary conditions through Fick's second law.

3. The coating failure analysis method for filtering and element diffusion as described in claim 1, characterized in that, After obtaining the damage parameters, it further includes: obtaining a visualization result according to the damage parameters and the finite element model.

4. The coating failure analysis method for filtering and element diffusion according to claim 1, wherein the finite element model sequentially includes a ceramic layer, an oxide layer, a bonding layer and a substrate layer along the thickness direction; the contact area between adjacent layers is encrypted in the grid along the thickness direction.

5. A coating failure analysis device for filtering and element diffusion, characterized in that including: a receiving module, configured to receive the element diffusion boundary conditions; the element diffusion boundary conditions include diffusion coefficient, boundary concentration, temperature and thermal exposure time; an element concentration calculation module, configured to determine the target element concentration according to the element diffusion boundary conditions; a bonding strength calculation module, configured to determine the target bonding strength according to the target element concentration through a pre-stored interfacial strength degradation function coupled with the element concentration; an interface damage assessment module, configured to input the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model outputs corresponding damage parameters according to the target bonding strength and preset boundary conditions; each integration point at the uneven places of each layer of the finite element model has a corresponding local coordinate system, the Y-axis direction of the local coordinate system is the interface normal direction of the layer, and the interface damage assessment module includes: a direction correction calculation unit, configured to input the target bonding strength into the finite element model of the tested thermal barrier coating, so that the finite element model performs coordinate transformation through the local coordinate system according to the target bonding strength and preset boundary conditions, and outputs corresponding damage parameters.

6. The coating failure analysis device for filtering and element diffusion according to claim 5, characterized in that, The element concentration calculation module includes: an element diffusion unit, configured to determine the target element concentration according to the element diffusion boundary conditions through Fick's second law.

7. The coating failure analysis device for filtering and element diffusion according to claim 5, characterized in that, The interface damage assessment module further includes: a visualization unit, configured to obtain a visualization result according to the damage parameters and the finite element model.

8. A coating failure analysis device for filtering and element diffusion, characterized in that, including: a memory, configured to store a computer program; A processor, which is configured to implement the steps of the coating failure analysis method for filtering and element diffusion according to any one of claims 1 to 4 when executing the computer program.

9. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the coating failure analysis method for filtering and element diffusion according to any one of claims 1 to 4 are implemented.

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