A water-based fluorescent penetrant for a hemispherical resonator gyro resonator and a method for detecting defects

Abstract

The application provides a hemispherical resonator gyro resonator water-based fluorescent penetrant and a flaw detection method. The hemispherical resonator gyro resonator water-based fluorescent penetrant is prepared from the following raw materials in parts by weight: deionized water 40-80 parts, 1,2-propanediol 10-60 parts, sodium dodecyl sulfate 5-10 parts, and fluorescent dye 0.2-0.5 parts. The water-based fluorescent dye is used, so that the pollution to the environment and the harm to the operators caused by the use of organic solvents are avoided. Meanwhile, the viscosity and the surface tension of the water-based fluorescent penetrant can be adjusted by adjusting the ratio of the surfactant SDS and the additive 1,2-propanediol, so that the requirements for the detection sensitivity and the accuracy under different working conditions can be met.

Description

Technical Field

[0001] This invention belongs to the field of hemispherical resonator product preparation technology, and particularly relates to a water-based fluorescent penetrant testing agent and testing method for a hemispherical resonant gyroscope. Background Technology

[0002] A hemispherical resonator gyroscope is a novel type of vibrating gyroscope that uses the standing wave precession effect of a hemispherical harmonic oscillator to sense the rotation of a base. Its vibration-sensitive component is the hemispherical harmonic oscillator. The principle of a hemispherical resonator gyroscope requires that the hemispherical harmonic oscillator be a perfectly symmetrical and uniform resonator, demanding extremely high isotropy. However, the hemispherical harmonic oscillator is made of quartz glass through precision grinding. During the manufacturing process, surface damage such as scratches and microcracks may occur on the surface of the hemispherical harmonic oscillator. This can cause changes in the circumferential uniformity of the harmonic oscillator, resulting in frequency differences at different angles, i.e., frequency fragmentation. This further affects the accuracy of standing wave control. Therefore, efficient and accurate surface damage detection methods are crucial for improving the key performance of the hemispherical harmonic oscillator and for the engineering application of hemispherical resonator gyroscopes. Traditional flaw detection methods use high-magnification microscopes for direct observation. While this method is highly accurate, it is inefficient and difficult to inspect the complex curved surface of the harmonic oscillator, consuming significant manpower and time, which is detrimental to the mass industrial production of hemispherical resonator gyroscopes. Therefore, there is an urgent need for new, highly efficient flaw detection methods. In the industrial field, relatively complete non-destructive testing (NDT) methods have been developed for surface damage detection of complex-shaped workpieces, mainly including penetrant testing, radiographic testing, and ultrasonic testing. These testing methods are widely used in various metal parts and materials such as ceramics and plastics. However, there is a lack of specific research on high-precision quartz glass workpieces, such as hemispherical resonators. Due to the complex shape of the hemispherical resonator and the extremely small size of surface damage, high detection accuracy is required. Currently, penetrant testing is the most suitable NDT method.

[0003] The basic principle of penetrant testing is capillary action. A penetrant with a specific composition is applied to the surface of the workpiece or immersed for a certain period. Due to capillary action, the penetrant penetrates into the tiny scratches and cracks on the workpiece surface. If the workpiece is then cleaned, and no washing has occurred, the penetrant that has penetrated into the damaged surface layer will remain within the surface damage, thus indicating the area where the damage exists. Depending on the colorimetric method, penetrant testing can be divided into direct staining testing and fluorescent staining testing. The former allows direct observation and is simpler, while the latter requires the use of a colorimetric reagent or ultraviolet light for observation, which is more complicated but provides better colorimetric results and higher detection accuracy. Depending on the solvent type, penetrant testing agents can be divided into water-based and oil-based types. Water-based agents use water as a solvent, offering advantages in safety and environmental friendliness, but due to water's high surface tension and low viscosity, the penetration effect is poor. Oil-based agents use organic solvents, which have good solubility and penetration, but most organic solvents are toxic, negatively impacting safety and environmental protection. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] According to one aspect of the present invention, a water-based fluorescent penetrant testing agent for a hemispherical resonator gyroscope is provided, which is prepared from the following raw materials in parts by weight: 40-80 parts of deionized water, 10-60 parts of 1,2-propanediol, 5-10 parts of sodium dodecyl sulfate, and 0.2-0.5 parts of fluorescent dye.

[0006] Furthermore, the water-based fluorescent penetrant testing agent for the hemispherical resonant gyroscope is prepared from the following raw materials in parts by weight: 50-70 parts deionized water, 20-30 parts 1,2-propanediol, 7-8 parts sodium dodecyl sulfate, and 0.3-0.5 parts fluorescent dye.

[0007] According to another aspect of the present invention, a method for detecting flaws in a hemispherical resonator gyroscope is provided, wherein the method employs a water-based fluorescent penetrant for detecting flaws in the surface of the hemispherical resonator gyroscope as described above.

[0008] Furthermore, the flaw detection method for a hemispherical resonant gyroscope resonator includes the following steps:

[0009] S1, equipped with a hemispherical resonant gyroscope resonator and water-based fluorescent penetrant testing agent:

[0010] S11, mix the following raw materials in the indicated weight ratios: 50-70 parts deionized water, 20-30 parts 1,2-propanediol, 7-8 parts sodium dodecyl sulfate, 0.3-0.5 parts fluorescent dye, and stir at room temperature for a certain period of time.

[0011] S12, filter the mixture obtained in step S11 to obtain a water-based fluorescent penetrant testing agent for a hemispherical resonant gyroscope.

[0012] S2, Surface flaw detection of the hemispherical resonant gyroscope resonator is performed using the configured water-based fluorescent penetrant for flaw detection:

[0013] S21, Stir the water-based fluorescent penetrant for the hemispherical resonant gyroscope until it is uniform and free of stratification;

[0014] S22, Immerse the hemispherical harmonic oscillator to be tested in water-based fluorescent penetrant for a certain period of time;

[0015] S23, remove the soaked hemispherical harmonic oscillator and clean and dry it;

[0016] S24, Irradiate the hemispherical harmonic oscillator under an ultraviolet lamp and determine the surface damage layer based on the fluorescence position;

[0017] S25, clean the hemispherical harmonic oscillator.

[0018] Further, in step S23, after the hemispherical harmonic oscillator in S22 is removed from the water-based fluorescent penetrant, it is rinsed with deionized water three times, each time for 1 to 3 minutes, and then dried.

[0019] Further, in step S25, the hemispherical harmonic oscillator in S24 is rinsed with clean water 6 to 8 times, acid-washed, rinsed with deionized water 6 to 8 times, and then dried.

[0020] Further, after step S25, step S26 is performed to recover the water-based fluorescent penetrant in S22.

[0021] This invention provides a water-based fluorescent penetrant testing agent and method for detecting flaws in hemispherical resonator gyroscopes. The use of water-based fluorescent dyes avoids environmental pollution and operator hazards associated with organic solvents. Furthermore, the viscosity and surface tension of the solution can be adjusted by modifying the ratio of surfactant SDS and additive 1,2-propanediol, thus meeting the sensitivity and accuracy requirements under different operating conditions. Compared to traditional methods, this invention's method for detecting flaws in hemispherical resonator gyroscopes significantly improves detection efficiency, reduces labor and operational costs, and ensures high sensitivity and accuracy, facilitating the mass industrial production of hemispherical resonators. Compared to existing technologies, this invention solves the technical problems of existing hemispherical resonator gyroscope flaw detection methods failing to meet performance and safety requirements. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are provided to further illustrate embodiments of the invention and, together with the textual description, explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0023] Figure 1 A flowchart illustrating a flaw detection method for a hemispherical resonant gyroscope resonator according to a specific embodiment of the present invention is shown. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0027] According to one aspect of the present invention, a water-based fluorescent penetrant testing agent for a hemispherical resonator gyroscope is provided, the testing agent being prepared from the following raw materials in parts by weight: 40-80 parts deionized water, 10-60 parts 1,2-propanediol, 5-10 parts sodium dodecyl sulfate (SDS), and 0.2-0.5 parts fluorescent dye.

[0028] This configuration provides a water-based fluorescent penetrant testing agent for hemispherical resonant gyroscopes. The agent is water-based and uses sodium dodecyl sulfate as a surfactant and 1,2-propanediol as an additive, which improves the performance of the agent and achieves high safety and low environmental hazard while meeting performance requirements.

[0029] Furthermore, the water-based fluorescent penetrant testing agent for the hemispherical resonant gyroscope in this invention is prepared from the following raw materials in parts by weight: 50-70 parts deionized water, 20-30 parts 1,2-propanediol, 7-8 parts sodium dodecyl sulfate (SDS), and 0.3-0.5 parts fluorescent dye.

[0030] As a specific embodiment of the present invention, a red fluorescent dye can be used for color development.

[0031] This invention uses water-based fluorescent dyes, avoiding environmental pollution and harm to operators caused by the use of organic solvents; at the same time, the viscosity and surface tension of the water-based fluorescent penetrant can be adjusted by changing the ratio of surfactant SDS and auxiliary agent 1,2-propanediol, which can meet the requirements of detection sensitivity and accuracy under different working conditions.

[0032] According to another aspect of the present invention, a method for detecting flaws in a hemispherical resonator gyroscope is provided, wherein the method employs a water-based fluorescent penetrant for detecting flaws in the surface of the hemispherical resonator gyroscope as described above.

[0033] The flaw detection method for hemispherical resonant gyroscopes of the present invention can improve flaw detection efficiency, reduce labor and practical costs, and at the same time have high safety and can reduce environmental hazards.

[0034] Specifically, such as Figure 1 As shown, the flaw detection method for a hemispherical resonant gyroscope oscillator of the present invention includes the following steps:

[0035] S1, equipped with a hemispherical resonant gyroscope resonator and water-based fluorescent penetrant testing agent:

[0036] S11, mix the following raw materials in the following weight ratio: 50-70 parts deionized water, 20-30 parts 1,2-propanediol, 7-8 parts sodium dodecyl sulfate (SDS), 0.3-0.5 parts fluorescent dye, and stir at room temperature for a certain period of time.

[0037] S12, filter the mixture obtained in step S11 to obtain a water-based fluorescent penetrant testing agent for a hemispherical resonant gyroscope.

[0038] S2, Surface flaw detection of the hemispherical resonant gyroscope resonator is performed using the configured water-based fluorescent penetrant for flaw detection:

[0039] S21, Stir the water-based fluorescent penetrant for the hemispherical resonant gyroscope until it is uniform and free of stratification;

[0040] S22, Immerse the hemispherical harmonic oscillator to be tested in water-based fluorescent penetrant for a certain period of time;

[0041] S23, remove the soaked hemispherical harmonic oscillator and clean and dry it;

[0042] S24, Irradiate the hemispherical harmonic oscillator under an ultraviolet lamp and determine the surface damage layer based on the fluorescence position;

[0043] S25, clean the hemispherical harmonic oscillator.

[0044] As a specific embodiment of the present invention, in step S23, after the hemispherical harmonic oscillator in step S22 is removed from the water-based fluorescent penetrant, it is rinsed with deionized water 3 times, each time for 1 to 3 minutes, and then dried.

[0045] In step S25, the hemispherical harmonic oscillator from step S24 is rinsed with clean water 6 to 8 times, acid-washed, rinsed with deionized water 6 to 8 times, and then dried.

[0046] After step S25, the water-based fluorescent penetrant in step S22 can also be recycled to reduce costs.

[0047] The present invention provides a flaw detection method for hemispherical resonator gyroscopes, which uses a novel water-based fluorescent penetrant to detect surface damage to the hemispherical resonator. Compared with traditional methods, this method significantly improves detection efficiency, reduces labor and practical costs, and ensures high sensitivity and accuracy of flaw detection, thus facilitating the mass industrial production of hemispherical resonators.

[0048] To gain a further understanding of the present invention, the flaw detection method for hemispherical resonant gyroscopes of the present invention will be described in detail below with reference to specific embodiments.

[0049] Example 1:

[0050] A flaw detection method for a hemispherical resonant gyroscope resonator includes the following steps:

[0051] S1, equipped with a hemispherical resonant gyroscope resonator and water-based fluorescent penetrant testing agent:

[0052] S11, mix the raw materials according to the following weight ratio: 60 parts deionized water, 25 parts 1,2-propylene glycol, 8 parts SDS, and 0.3 parts fluorescent red dye. Put them into a beaker in sequence, seal the mouth of the beaker, and stir at room temperature for 2 hours using a magnetic stirrer.

[0053] S12, the mixture obtained in step S11 is filtered through a 200-mesh sieve to obtain a water-based fluorescent penetrant testing agent; the water-based fluorescent penetrant testing agent is poured into a storage tank and sealed for storage;

[0054] S2, Surface flaw detection of the hemispherical resonant gyroscope resonator is performed using the configured water-based fluorescent penetrant for flaw detection:

[0055] S21. When using, pour the water-based fluorescent penetrant testing agent prepared in step S12 into a container and stir with a stirrer until the solution is uniform in color and without layering.

[0056] S22, Immerse the hemispherical harmonic oscillator to be tested in the water-based fluorescent penetrant for at least 30 minutes;

[0057] S23, Remove the hemispherical harmonic oscillator from the water-based fluorescent penetrant in step S22, rinse it with deionized water 3 times for 1 minute each time, and dry it;

[0058] S24. Place the hemispherical harmonic oscillator from step S23 under ultraviolet light and observe it with a microscope. The surface damage layer can be determined based on the position of the red fluorescence.

[0059] S25. After observation, the hemispherical harmonic oscillator from step S24 is rinsed with clean water 8 times, acid-washed, rinsed with deionized water 8 times, and dried.

[0060] S26, the water-based fluorescent penetrant testing agent from step S22 is recovered.

[0061] Example 2

[0062] A flaw detection method for a hemispherical resonant gyroscope resonator includes the following steps:

[0063] S1, equipped with a hemispherical resonant gyroscope resonator and water-based fluorescent penetrant testing agent:

[0064] S11, mix the raw materials according to the following weight ratio: 50 parts deionized water, 30 parts 1,2-propylene glycol, 8 parts SDS, and 0.4 parts fluorescent red dye. Put them into a beaker in sequence, seal the mouth of the beaker, and stir at room temperature for 2 hours using a magnetic stirrer.

[0065] S12, the mixture obtained in step S11 is filtered through a 200-mesh sieve to obtain a water-based fluorescent penetrant testing agent; the water-based fluorescent penetrant testing agent is poured into a storage tank and sealed for storage;

[0066] S2, Surface flaw detection of the hemispherical resonant gyroscope resonator is performed using the configured water-based fluorescent penetrant for flaw detection:

[0067] S21. When using, pour the water-based fluorescent penetrant testing agent prepared in step S12 into a container and stir with a stirrer until the solution is uniform in color and without layering.

[0068] S22, Immerse the hemispherical harmonic oscillator to be tested in the water-based fluorescent penetrant for at least 30 minutes;

[0069] S23, Remove the hemispherical harmonic oscillator from the water-based fluorescent penetrant in step S22, rinse it with deionized water 3 times for 2 minutes each time, and dry it;

[0070] S24. Place the hemispherical harmonic oscillator from step S23 under ultraviolet light and observe it with a microscope. The surface damage layer can be determined based on the position of the red fluorescence.

[0071] S25. After observation, the hemispherical harmonic oscillator from step S24 is rinsed with clean water 7 times, acid-washed, rinsed with deionized water 7 times, and dried.

[0072] S26, the water-based fluorescent penetrant testing agent from step S22 is recovered.

[0073] Example 3

[0074] A flaw detection method for a hemispherical resonant gyroscope resonator includes the following steps:

[0075] S1, equipped with a hemispherical resonant gyroscope resonator and water-based fluorescent penetrant testing agent:

[0076] S11, mix the raw materials according to the following weight ratio: 70 parts deionized water, 20 parts 1,2-propylene glycol, 7 parts SDS, and 0.5 parts fluorescent red dye are placed into a beaker in sequence, the mouth of the beaker is sealed, and the mixture is stirred at room temperature for 2 hours using a magnetic stirrer.

[0077] S12, the mixture obtained in step S11 is filtered through a 200-mesh sieve to obtain a water-based fluorescent penetrant testing agent; the water-based fluorescent penetrant testing agent is poured into a storage tank and sealed for storage;

[0078] S2, Surface flaw detection of the hemispherical resonant gyroscope resonator is performed using the configured water-based fluorescent penetrant for flaw detection:

[0079] S21. When using, pour the water-based fluorescent penetrant testing agent prepared in step S12 into a container and stir with a stirrer until the solution is uniform in color and without layering.

[0080] S22, Immerse the hemispherical harmonic oscillator to be tested in the water-based fluorescent penetrant for at least 30 minutes;

[0081] S23, Remove the hemispherical harmonic oscillator from the water-based fluorescent penetrant in step S22, rinse it with deionized water 3 times for 1 minute each time, and dry it;

[0082] S24. Place the hemispherical harmonic oscillator from step S23 under ultraviolet light and observe it with a microscope. The surface damage layer can be determined based on the position of the red fluorescence.

[0083] S25. After observation, the hemispherical harmonic oscillator from step S24 is rinsed with clean water 6 times, acid-washed, rinsed with deionized water 6 times, and dried.

[0084] S26, the water-based fluorescent penetrant testing agent from step S22 is recovered.

[0085] In summary, this invention provides a water-based fluorescent penetrant testing agent and method for detecting flaws in hemispherical resonator gyroscopes. The use of water-based fluorescent dyes avoids environmental pollution and operator hazards associated with organic solvents. Furthermore, the viscosity and surface tension of the solution can be adjusted by modifying the ratio of surfactant SDS and auxiliary agent 1,2-propanediol, thus meeting the sensitivity and accuracy requirements under different operating conditions. Compared to traditional methods, this invention's method for detecting flaws in hemispherical resonator gyroscopes significantly improves detection efficiency, reduces labor and operational costs, and ensures high sensitivity and accuracy, facilitating the mass industrial production of hemispherical resonators.

[0086] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A water-based fluorescent penetrant inspection agent for a hemispherical resonator gyro resonator, characterized by, The hemispherical resonator gyroscope resonator water-based fluorescent penetrant is prepared from the following raw materials in parts by weight: deionized water 40-80 parts, 1,2-propanediol 10-60 parts, sodium dodecyl sulfate 5-10 parts, and fluorescent dye 0.2-0.5 parts.

2. The hemispherical resonator gyroscope resonator water-based fluorescent penetrant inspection agent of claim 1, wherein, The hemispherical resonator gyroscope resonator water-based fluorescent penetrant is prepared from the following raw materials in parts by weight: deionized water 50-70 parts, 1,2-propanediol 20-30 parts, sodium dodecyl sulfate 7-8 parts, and fluorescent dye 0.3-0.5 parts.

3. A method of inspecting a resonator of a hemispherical resonator gyro, characterized by, The hemispherical resonator gyroscope resonator surface detection method uses the hemispherical resonator gyroscope resonator water-based fluorescent penetrant of claim 1 or 2 to detect the surface of the hemispherical resonator gyroscope resonator.

4. The hemispherical resonator gyroscope resonator flaw detection method according to claim 3, characterized in that, The hemispherical resonator gyroscope resonator surface detection method comprises the following steps: S1, preparing the hemispherical resonator gyroscope resonator water-based fluorescent penetrant; S11, mixing the following raw materials in parts by weight: deionized water 50-70 parts, 1,2-propanediol 20-30 parts, sodium dodecyl sulfate 7-8 parts, and fluorescent dye 0.3-0.5 parts, and stirring at room temperature for a certain period of time; S12, filtering the mixture obtained in step S11 to obtain the hemispherical resonator gyroscope resonator water-based fluorescent penetrant; S2, using the prepared hemispherical resonator gyroscope resonator water-based fluorescent penetrant to detect the surface of the hemispherical resonator gyroscope resonator: S21, stirring the hemispherical resonator gyroscope resonator water-based fluorescent penetrant until it is uniform and has no stratification; S22, immersing the hemispherical resonator gyroscope resonator to be detected in the water-based fluorescent penetrant for a certain period of time; S23, taking out the immersed hemispherical resonator gyroscope resonator and cleaning and drying it; S24, placing the hemispherical resonator gyroscope resonator under an ultraviolet lamp for irradiation, and determining the surface damage layer according to the fluorescent position; S25, cleaning the hemispherical resonator gyroscope resonator.

5. The hemispherical resonator gyroscope resonator flaw detection method according to claim 4, characterized in that, In step S23, after the hemispherical resonator gyroscope resonator in S22 is taken out of the water-based fluorescent penetrant, it is rinsed with deionized water 3 times, each time for 1-3 minutes, and dried.

6. The hemispherical resonator gyroscope resonator flaw detection method according to claim 4, characterized in that, In step S25, the hemispherical resonator gyroscope resonator in S24 is rinsed with water 6-8 times, pickled, rinsed with deionized water 6-8 times, and dried.

7. The hemispherical resonator gyroscope resonator flaw detection method according to claim 4, characterized in that, After step S25, step S26 is performed to recycle the water-based fluorescent penetrant in S22.

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