A method for detecting the quality of a laser shock peening surface treatment

Abstract

This invention provides a quality inspection method for laser shock annealing (LSA) surface treatment, belonging to the field of LSA technology. The method includes: obtaining standard LSA parameters that enable a standard sample to meet preset process requirements; performing LSA treatment on a standard sample using the standard LSA parameters and obtaining the deformation range after LSA treatment; performing LSA treatment on a test sample and measuring the deformation of the test sample after LSA treatment; if the deformation is within the specified range, it is determined that the LSA parameters used on the test sample enable the sample to be processed to meet the preset process requirements after LSA treatment. This invention eliminates the need for additional equipment for detecting residual stress and other physical parameters when performing LSA treatment on the sample to be processed, allowing for indirect evaluation of the processed sample quality by utilizing the deformation of the test sample under LSA treatment.

Description

Technical Field

[0001] This invention relates to the field of laser shock peening technology, and in particular to a quality inspection method for laser shock peening surface treatment. Background Technology

[0002] Laser shock peening (LSP), as an excellent non-contact surface strengthening technology, has been widely used in key industrial fields such as aerospace, shipbuilding, energy equipment, and high-precision components. It is particularly suitable for strengthening components with stringent requirements for fatigue life and structural reliability. LSP uses short-pulse, high-peak-power-density lasers to irradiate the metal surface. A pre-coated absorbing protective layer on the metal surface absorbs the laser energy to generate high-temperature, high-pressure plasma. The generated plasma is confined by the constraint layer on the metal surface, forming a high-pressure shock wave that penetrates into the metal material. This causes plastic deformation of the metal surface and promotes changes in the internal microstructure, thereby creating residual compressive stress within a relatively deep thickness of the metal material. This significantly improves the metal's fatigue resistance, wear resistance, and stress corrosion resistance.

[0003] However, when performing laser shock peening on large batches of metal samples at the work site, even using pre-set laser shock peening parameters, the processed metal samples may still fail to meet process requirements due to differences in equipment, environment, and materials. Currently, the quality evaluation of shock-peening metal samples largely relies on direct measurement of residual stress, microstructure observation, or hardness testing. These testing processes are complex, time-consuming, and some methods are destructive to the processed samples, making it difficult to quickly evaluate sample quality on-site and to confirm and adjust laser shock peening parameters to ensure the processed samples meet standards.

[0004] Therefore, it is necessary to design a quality inspection method for laser shock peening surface treatment to improve the above-mentioned problems. Summary of the Invention

[0005] This invention provides a quality inspection method for laser shock annealing surface treatment, which improves upon the existing methods for inspecting laser shock annealed samples, which struggle to quickly and non-destructively evaluate the quality of processed samples on-site and cannot rapidly confirm and adjust the laser shock annealing parameters to ensure the processed samples meet the standards.

[0006] This invention provides a quality inspection method for laser shock peening surface treatment, the quality inspection method comprising: Obtain standard laser shock annealing parameters that make the standard sample meet the preset process requirements; A standard test piece is provided, and the standard test piece is subjected to laser shock strengthening treatment using the standard laser shock strengthening parameters. The deformation range of the standard test piece after laser shock strengthening is obtained. A test piece is provided, which is subjected to laser shock peening treatment, and the deformation of the test piece after laser shock peening is measured; wherein the test piece has the same material and thickness as the standard test piece. If the deformation is within the range of the deformation, then it is determined that the laser shock strengthening parameters used on the test piece can enable the test piece to meet the preset process requirements after laser shock strengthening.

[0007] In one example of the present invention, the quality inspection method further includes: if the deformation is not within the range of the deformation, adjusting the laser shock strengthening parameters of the test piece until the deformation of the test piece after laser shock strengthening is within the range of the deformation, and determining that the adjusted laser shock strengthening parameters enable the test piece to meet the preset process requirements after laser shock strengthening.

[0008] In one example of the present invention, obtaining the standard laser shock strengthening parameters that make the standard sample meet the preset process requirements includes: performing laser shock strengthening treatment on both sides of the standard sample with the preset laser shock strengthening parameters, and measuring the residual stress on the surface of the standard sample after processing; adjusting the preset laser shock strengthening parameters until the residual stress of the standard sample after laser shock strengthening meets the preset process requirements, and then using the adjusted preset laser shock strengthening parameters as the standard laser shock strengthening parameters.

[0009] In one example of the present invention, before performing laser shock peening on the standard sample, the method further includes: pre-treating the surface of the standard sample so that the surface roughness of the standard sample is within a preset range.

[0010] In one example of the present invention, the preset range of the surface roughness is 0.8~1.6 Ra.

[0011] In one example of the present invention, the step of performing laser shock strengthening treatment on the standard test piece using the standard laser shock strengthening parameters and obtaining the deformation range of the standard test piece after laser shock strengthening includes: performing laser shock strengthening treatment on the relative positions of one or both sides of multiple standard test pieces using the standard laser shock strengthening parameters; and measuring the deformation range of multiple standard test pieces after laser shock strengthening treatment.

[0012] In one example of the present invention, the deformation includes at least one of the changes in arc height, length, and width of the standard test piece and the calibration test piece after laser shock strengthening.

[0013] In one example of the present invention, the deformation of the standard test piece or the calibration test piece is measured using a three-dimensional topography instrument, a laser displacement sensor, an optical interferometer, a coordinate measuring machine, or an arc height measuring instrument.

[0014] In one example of the present invention, the standard test piece and the calibration test piece may be made of aluminum alloy, titanium alloy or spring steel.

[0015] In one example of the present invention, the laser shock enhancement parameters include the wavelength, energy, pulse width, and spot diameter of the output laser light incident on the surface.

[0016] The quality inspection method provided by this invention first obtains the laser shock strengthening parameters that enable the standard sample to meet the preset process requirements, and records the deformation range of the standard sample after processing under these laser shock strengthening parameters; then, while processing on-site, laser shock strengthening treatment is performed on both the sample to be processed and the test sample, and the recorded deformation range is used as a standard to compare with the deformation of the test sample after laser processing to evaluate the quality of the processed sample, and the laser shock strengthening parameters that enable the processed sample to meet the process requirements are confirmed and adjusted on-site.

[0017] This quality inspection method, when laser shock strengthening of the sample to be processed, does not require additional physical parameter testing equipment such as residual stress, hardness, fatigue, etc. It can indirectly, quickly, and non-destructively evaluate the laser shock strengthening quality of the processed sample by using the deformation of the calibration sample under the same laser shock strengthening parameters. This indirectly determines whether the mechanical properties such as residual stress, hardness, and fatigue of the processed sample after laser shock strengthening meet the process requirements, and confirms and adjusts the laser shock strengthening parameters to make the processed sample meet the process requirements. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other embodiments based on these drawings without inventive effort.

[0019] In the attached diagram: Figure 1 This is a schematic flowchart of a quality inspection method in one embodiment of the present invention; Figure 2This is a schematic diagram illustrating laser shock peening surface treatment of a standard test piece and a calibration standard test piece in one embodiment of the present invention; Figure 3 This is a schematic diagram of single-sided laser shock oscillation strengthening surface treatment of a standard test piece and a calibration standard test piece in one embodiment of the present invention; (the circular marked part in the figure is the laser processing area); Figure 4 This is a schematic diagram of double-sided laser shock osmosis strengthening surface treatment of a standard test piece and a calibration standard test piece in one embodiment of the present invention; (the circular marked part in the figure is the laser processing area); Figure 5 This is a schematic diagram of the deformation of a standard test piece and a calibration standard test piece after single-sided laser processing in one embodiment of the present invention.

[0020] The attached figures are labeled as follows: 10. Standard test piece; 20. Calibration test piece. Detailed Implementation

[0021] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. It should also be understood that the terminology used in the embodiments of the present invention is for describing specific implementation schemes and not for limiting the scope of protection of the present invention. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0022] For simplicity, this document only explicitly discloses some numerical ranges, and each point or individual value between the endpoints of the range is included within that range. Therefore, each point or individual value can be used as its own lower or upper limit, combined with any other point or individual value, or combined with other lower or upper limits to form a range not explicitly stated. It should be noted that, in this invention, the content of each component in the electrolyte represents the mass percentage of that component relative to the solvent or electrolyte.

[0023] like Figure 1 As shown, this application provides a quality inspection method for laser shock peening surface treatment, which includes the following steps: S1. Obtain the standard laser shock strengthening parameters that make the standard sample meet the preset process requirements after laser shock strengthening; S2. Provide a standard test piece 10, perform laser shock strengthening treatment on the standard test piece 10 using the standard laser shock strengthening parameters, and obtain the deformation range of the standard test piece 10 after laser shock strengthening. S3. Before processing the sample, a calibration test piece 20 is provided, the calibration test piece 20 is subjected to laser shock strengthening treatment, and the deformation of the calibration test piece 20 after laser shock strengthening treatment is measured; wherein, the calibration test piece 20 has the same material and thickness as the standard test piece 10. S4. If the deformation is within the range of the deformation, then it is determined that the laser shock strengthening parameters used on the test piece 20 can make the test piece meet the preset process requirements after laser shock strengthening.

[0024] In step S1, a standard sample can be placed in the processing equipment beforehand and subjected to laser shock peening treatment on both sides. Then, the mechanical properties (such as hardness and residual stress) of the standard sample after laser shock peening are measured. Based on the test results, the laser shock peening parameters are adjusted until the mechanical properties of the standard sample meet the process standards. Finally, the laser shock peening parameters that make the mechanical properties of the standard sample meet the process standards are used as the standard laser shock peening parameters.

[0025] In some embodiments, step S1 includes the following steps: S11. Provide a standard sample; set an absorption protective layer and a constraint layer on the surface of the standard sample, perform laser shock strengthening surface treatment on the preset areas on both sides of the standard sample with preset laser shock strengthening parameters, and measure the residual stress of the standard sample after laser processing; wherein, the absorption protective layer can be, for example, black tape, and the constraint layer can be, for example, deionized water.

[0026] S12. If the residual stress on the surface of the pre-processed standard sample meets the preset process requirements, then record the preset laser shock strengthening parameters as the standard laser shock strengthening parameters. S13. If the residual stress on the surface of the pre-processed standard sample does not meet the preset process requirements, the preset laser shock strengthening parameters shall be adjusted and the standard sample shall be subjected to laser shock strengthening surface treatment again until the residual stress of the standard sample after laser processing meets the preset process requirements. Then the adjusted preset laser shock strengthening parameters shall be used as the standard laser shock strengthening parameters.

[0027] In some embodiments, before laser shock peening the standard sample, step S11 further includes pre-treating the surface of the standard sample to ensure that the surface roughness of the standard sample is within a preset range, thereby ensuring the smoothness and flatness of the standard sample surface. For example, in one embodiment, after pre-treatment, the surface roughness of the standard sample can be any value within the range of 0.8 to 1.6 Ra, such as 0.8 Ra, 0.9 Ra, 1 Ra, 1.1 Ra, 1.2 Ra, 1.3 Ra, 1.4 Ra, 1.5 Ra, or 1.6 Ra.

[0028] like Figures 2 to 5 As shown, in step S2, a standard metal specimen 10 is provided. The standard specimen 10 is subjected to laser shock strengthening treatment using the standard laser shock strengthening parameters recorded in step S1, causing deformation of the standard specimen 10 under laser processing. The deformation range of multiple standard specimens 10 after laser processing is recorded. The deformation range recorded in step S2 can be used as a reference standard for subsequent on-site testing to determine whether the processed samples meet the preset process requirements.

[0029] like Figures 2 to 5 As shown, in some embodiments, step S2 includes the following steps: S21. Cleaning pretreatment is performed on the surface of standard test piece 10, and an absorption protective layer and a constraint layer are sequentially set on the surface of standard test piece 10; then, laser shock strengthening treatment is performed on the single or double relative positions of multiple standard test pieces 10 using standard laser shock strengthening parameters. S22. Measure the deformation of multiple standard test pieces 10 after laser shock strengthening treatment, remove obviously excessive or excessively low deformation from the records, and obtain the stable deformation range of multiple standard test pieces 10 after laser shock strengthening treatment.

[0030] like Figure 2 , Figure 3 and Figure 5 As shown, in one embodiment, in step S21, when performing laser shock peening on one side of the standard specimen 10, the strengthening laser can be continuously focused onto the standard specimen 10 along the outer edge of its long side to induce arc height deformation, thereby completing the single-sided laser shock peening of the standard specimen 10. In step S22, the arc height change value of the standard specimen 10 is measured as the deformation of the standard specimen 10 after single-sided laser shock peening.

[0031] like Figure 2 and Figure 4As shown, in another embodiment, in step S21, when performing laser shock peening on both sides of the standard specimen 10, laser shock peening can be performed at relative positions on both sides of the standard specimen 10. For example, the strengthening laser can be focused on the outer edge of the same long side on both sides of the standard specimen 10 to cause tensile deformation of the long and wide sides of the standard specimen 10, thereby completing the double-sided laser shock peening of the standard specimen 10. In step S22, the length change and width change values ​​of the standard specimen 10 in the laser-strengthened area are measured as the deformation of the standard specimen 10 after double-sided laser shock peening.

[0032] In step S3, i.e., at the work site, when processing the sample to be processed, a verification sample 20 with the same thickness and material as the standard sample 10 in step S2 can be provided first. Then, an absorption protective layer and a constraint layer are sequentially set on the surface of the verification sample 20. The verification sample 20 is then subjected to laser shock strengthening treatment with the set laser shock strengthening parameters and the same laser strengthening method, and the deformation of the standard sample 10 after laser shock strengthening is measured.

[0033] If, in step S2, the standard test piece 10 is subjected to single-sided impact strengthening treatment, then in step S3, the same method is used to perform single-sided impact strengthening on the same location on the test piece 20, and the change in arc height of the test piece 20 is measured as the deformation. Alternatively, if, in step S2, the standard test piece 10 is subjected to double-sided impact strengthening treatment, then in step S3, the same method is used to perform double-sided impact strengthening on the same location on the test piece 20, and the changes in length and width of the test piece 20 are measured as the deformation.

[0034] In step S4, if the deformation of the test piece 20 is within the deformation range determined in step S2, it is determined that the currently set laser shock strengthening parameters can make the sample to be processed meet the preset process requirements after laser shock strengthening, so that no additional testing equipment is needed to test the processed sample.

[0035] In step S4, if the deformation of the test piece 20 is not within the deformation range determined in step S2, it is determined that the currently set laser shock strengthening parameters cannot ensure that the sample to be processed meets the preset process requirements after laser shock strengthening. Then, the laser shock strengthening parameters can be adjusted to continue laser shock strengthening surface treatment of the test piece 20 until the deformation of the test piece 20 after laser shock strengthening is within the deformation range. It can then be determined that the adjusted laser shock strengthening parameters can ensure that the sample to be processed meets the preset process requirements after laser shock strengthening. Thus, laser shock strengthening parameters that are suitable for the field equipment and meet the process requirements can be indirectly obtained by testing the test piece 20 at the work site.

[0036] In some embodiments, the laser shock enhancement parameters recorded and adjusted in the quality testing method of this application include the wavelength, energy, pulse width, and spot diameter of the output laser incident on the sample surface.

[0037] In some embodiments, in steps S2 to S4, the standard test piece 10 and the calibration test piece 20 used may be made of aluminum alloy, titanium alloy, stainless steel or spring steel.

[0038] In some embodiments, the recorded deformation in steps S2 and S4 may include at least one of the changes in arc height, length, and width of the standard specimen 10 and the calibration specimen 20 after laser shock strengthening. The aforementioned deformation can be measured using a three-dimensional topology instrument, a laser displacement sensor, an optical interferometer, a coordinate measuring machine, or an arc height measuring instrument.

[0039] like Figure 2 , Figure 3 and Figure 5 As shown, the planar deflection h of the standard test piece 10 or the verification test piece 20 after laser shock strengthening surface treatment is used as the recorded deformation. The planar deflection h is the amount of deformation generated by the standard test piece 10 or the verification test piece 20 in the direction perpendicular to its plane. By measuring the flatness H1 and the planar deflection H2 of the standard test piece 10 or the verification test piece 20, the arc height change value h of the standard test piece 10 or the verification test piece 20 can be determined as H2-H1.

[0040] The technical solution of the present invention will be described in detail below through several specific embodiments and comparative examples. Unless otherwise stated, the raw materials and reagents used in the following embodiments are commercially available products or can be prepared by conventional methods in the art.

[0041] Example 1 This embodiment provides a laser shock strengthening quality inspection method for titanium alloy samples to be processed, which includes the following steps: (1) A standard titanium alloy sample with dimensions of 20mm × 20mm × 2mm was provided. The surface of the standard sample was pretreated to ensure a surface roughness between 0.8 and 1.6 Ra. A black adhesive tape was placed on the surface of the standard sample as an absorption and protective layer, and the sample was then immersed in water. Laser shock peening was then applied to both sides of the standard sample using standard laser shock peening parameters. The standard laser shock peening parameters were: laser wavelength 1064nm, laser energy 5J, laser pulse width 20ns, overlap rate 50%, and a spot diameter of 3mm on the incident surface. After laser processing, the residual compressive stress on the surface of the sample exceeded 600MPa, and the residual stress influence layer depth exceeded 1mm, thus meeting the process requirements.

[0042] (2) 1070 spring steel Almen C was provided as a standard test piece. The standard test piece has a length, width and height of 76.1mm×18.95mm×2.385mm. The flatness H1 of the standard test piece was measured using an arc height measuring instrument. Then, black tape was placed on the surface of the standard test piece as an absorption protective layer and placed in water. The standard laser shock strengthening parameters were used to perform laser shock strengthening treatment on the 50mm×18.95mm area of ​​the center of the single side of the standard test piece. After treatment, the plane deflection H2 of the standard test piece was measured to obtain the deformation h=H2-H1 of the standard test piece after laser processing.

[0043] (3) Repeat step (2) to measure the deformation of multiple standard test pieces after strengthening, and obtain a stable deformation range of 0.25~0.35mm.

[0044] (4) When processing the titanium alloy test specimens, the calibration specimens are first subjected to single-sided laser shock peening surface treatment using standard laser shock peening parameters at the work site, and the deformation h of the calibration specimens after laser processing is measured. If the deformation h is within the range of 0.25~0.35mm, it is determined that processing the test specimens with these laser shock peening parameters will ensure that the test specimens meet the process requirements. The calibration specimens are the same as the standard specimens.

[0045] Example 2 This embodiment provides a laser shock strengthening quality inspection method for titanium alloy samples to be processed, which includes the following steps: (1) A standard titanium alloy sample with dimensions of 20mm × 20mm × 2mm was provided. The surface of the standard sample was pretreated to ensure a surface roughness between 0.8 and 1.6 Ra. A black adhesive tape was placed on the surface of the standard sample as an absorption and protective layer, and the sample was then immersed in water. Laser shock peening was then applied to both sides of the standard sample using standard laser shock peening parameters. The standard laser shock peening parameters were: laser wavelength 1064nm, laser energy 5J, laser pulse width 20ns, overlap rate 50%, and a spot diameter of 3mm on the incident surface. After laser processing, the residual compressive stress on the surface of the sample exceeded 600MPa, and the residual stress influence layer depth exceeded 1mm, thus meeting the process requirements.

[0046] (2) A 7075 aluminum alloy test piece is provided as a standard test piece. The standard test piece has a length, width and height of 76.1mm×18.95mm×4mm. The flatness H1 of the standard test piece is measured using an arc height measuring instrument. Then, black tape is placed on the surface of the standard test piece as an absorption protective layer and it is placed in water. The standard laser shock strengthening parameters are used to perform laser shock strengthening treatment on the 50mm×18.95mm area of ​​the center of the single side of the standard test piece. After treatment, the plane deflection H2 of the standard test piece is measured to obtain the deformation h=H2-H1 of the standard test piece after laser processing.

[0047] (3) Repeat step (2) to measure the deformation of multiple standard test pieces after strengthening, and obtain a stable deformation range of 0.45~0.55mm.

[0048] (4) When processing the titanium alloy test specimens, the calibration specimens are first subjected to single-sided laser shock peening surface treatment using standard laser shock peening parameters at the work site, and the deformation h of the calibration specimens after laser processing is measured. If the deformation h is within the range of 0.45~0.55mm, it is determined that processing the test specimens with these laser shock peening parameters will ensure that the test specimens meet the process requirements. The calibration specimens are the same as the standard specimens.

[0049] Example 3 This embodiment provides a laser shock strengthening quality inspection method for titanium alloy samples to be processed, which includes the following steps: (1) A standard titanium alloy sample with dimensions of 20mm × 20mm × 2mm was provided. The surface of the standard sample was pretreated to ensure a surface roughness between 0.8 and 1.6 Ra. A black adhesive tape was placed on the surface of the standard sample as an absorption and protective layer, and the sample was then immersed in water. Laser shock peening was then applied to both sides of the standard sample using standard laser shock peening parameters. The standard laser shock peening parameters were: laser wavelength 1064nm, laser energy 5J, laser pulse width 20ns, overlap rate 50%, and a spot diameter of 3mm on the incident surface. After laser processing, the residual compressive stress on the surface of the sample exceeded 600MPa, and the residual stress influence layer depth exceeded 1mm, thus meeting the process requirements.

[0050] (2) A TC4 titanium alloy specimen was provided as a standard specimen. The standard specimen has a length, width and height of 76.1mm×18.95mm×4mm. The flatness H1 of the standard specimen was measured using an arc height measuring instrument. Then, a black tape was placed on the surface of the standard specimen as an absorption protective layer and placed in water. The standard laser shock strengthening parameters were used to perform laser shock strengthening treatment on the 50mm×18.95mm area of ​​the center of the single side of the standard specimen. After treatment, the plane deflection H2 of the standard specimen was measured to obtain the deformation h=H2-H1 of the standard specimen after laser processing.

[0051] (3) Repeat step (2) to measure the deformation of multiple standard test pieces after strengthening, and obtain a stable deformation range of 0.3~0.5mm.

[0052] (4) When processing the titanium alloy test specimens, the calibration specimens are first subjected to single-sided laser shock peening surface treatment using standard laser shock peening parameters at the work site, and the deformation h of the calibration specimens after laser processing is measured. If the deformation h is within the range of 0.3~0.5mm, it is determined that processing the test specimens with these laser shock peening parameters will ensure that the test specimens meet the process requirements. The calibration specimens are the same as the standard specimens.

[0053] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A method for quality inspection of laser shock annealing surface treatment, characterized in that, include: Obtain standard laser shock annealing parameters that make the standard sample meet the preset process requirements; A standard test piece is provided, and the standard test piece is subjected to laser shock strengthening treatment using the standard laser shock strengthening parameters. The deformation range of the standard test piece after laser shock strengthening is obtained. A test piece is provided, which is subjected to laser shock peening treatment, and the deformation of the test piece after laser shock peening is measured; wherein the test piece has the same material and thickness as the standard test piece. If the deformation is within the range of the deformation, then it is determined that the laser shock strengthening parameters used on the test piece can enable the test piece to meet the preset process requirements after laser shock strengthening.

2. The quality inspection method according to claim 1, characterized in that, The quality testing method further includes: If the deformation is not within the range of the deformation, the laser shock strengthening parameters of the test specimen are adjusted until the deformation of the test specimen after laser shock strengthening is within the range of the deformation, and it is determined that the adjusted laser shock strengthening parameters can make the test specimen meet the preset process requirements after laser shock strengthening.

3. The quality inspection method according to claim 1, characterized in that, The acquisition of standard laser shock peening parameters that make the standard sample meet the preset process requirements includes: The standard sample was subjected to laser shock strengthening treatment on both sides using preset laser shock strengthening parameters, and the residual stress on the surface of the standard sample after processing was measured. The preset laser shock strengthening parameters are adjusted until the residual stress of the standard sample after laser shock strengthening meets the preset process requirements. Then, the adjusted preset laser shock strengthening parameters are used as the standard laser shock strengthening parameters.

4. The quality inspection method according to claim 3, characterized in that, Before performing laser shock peening on the standard sample, the process also includes: The surface of the standard sample is pretreated to ensure that the surface roughness of the standard sample is within a preset range.

5. The quality inspection method according to claim 4, characterized in that, The preset range for the surface roughness is 0.8~1.6 Ra.

6. The quality inspection method according to claim 1, characterized in that, The step of performing laser shock strengthening treatment on the standard specimen using the standard laser shock strengthening parameters, and obtaining the deformation range of the standard specimen after laser shock strengthening, includes: Laser shock strengthening treatment is performed on the relative positions of one or both sides of multiple standard specimens using the standard laser shock strengthening parameters. The range of deformation of multiple standard test pieces after laser shock peening treatment was measured.

7. The quality inspection method according to claim 1, characterized in that, The deformation includes at least one of the changes in arc height, length, and width of the standard test piece and the calibration test piece after laser shock strengthening.

8. The quality inspection method according to claim 7, characterized in that, The deformation of the standard test piece or the calibration test piece is measured using a three-dimensional topology instrument, a laser displacement sensor, an optical interferometer, a coordinate measuring machine, or an arc height measuring instrument.

9. The quality inspection method according to claim 1, characterized in that, The standard test piece and the calibration test piece can be made of aluminum alloy, titanium alloy or spring steel.

10. The quality inspection method according to claim 1, characterized in that, The laser shock enhancement parameters include the wavelength, energy, pulse width, and diameter of the laser spot incident on the surface.

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