A method of ultrasonic detection and tensile calibration test of bonding strength grade
A technology of bonding strength and test method, applied in measuring devices, instruments, mechanical devices, etc., can solve the problems of complex models, many influencing factors, and inconvenient measurement of bonding strength of parts
Active Publication Date: 2021-09-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
However, since the bonding strength of the coating is a structural parameter, not a physical property of the material, there are many influencing factors and the model is complex, so it is very inconvenient to measure the bonding strength of parts in service
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Embodiment Construction
[0035] The present invention is a graded ultrasonic detection and tensile calibration test method of bonding strength, which uses nine grades of bonding strength to bond the matrix block, detects the bonding strength between the substrate block and the bonding layer of nine grades, and uses The detected bonding strength of these nine grades is used as a standard to evaluate the bonding strength of other bonding layers of the same material.
[0036] The present invention designs and manufactures upper and lower matrix blocks with different bonding strengths. After research and test verification, it is found that the method has a correct theoretical basis, a feasible technical solution, an effective implementation method and reliable and repeatable detection results, and solves the problem of Ultrasonic testing and strength level calibration requirements for the bonding strength of coatings and other adhesive parts.
[0037] The bonding strength grade ultrasonic detection and te...
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An ultrasonic detection and tensile calibration test method of the bonding strength level of the present invention includes: bonding the upper and lower substrate blocks to form a theoretical bonding area s lv , apply a downward actual tensile force to the lower matrix block; obtain the actual bonding area s of the theoretical bonding area sj ; With the actual tensile force in step 2 and the actual bonding area s in step 3 sj Calculate the first actual bond strength σ sj1 , with the first actual bond strength σ sj1 and the second actual bond strength σ calculated by the formula sj2 In comparison, verify the correctness of the method of using the theoretical bonding area as the calibrated bonding strength; repeat steps 2 to 4 to form a one-to-one correspondence between the theoretical bonding area, the actual bonding area and the first actual bonding strength. Bonding strength table; use the actual bonding area of the workpiece to find out the actual bonding strength corresponding to the actual bonding area from the bonding area bonding strength table. With this method, the actual bonding strength of the workpiece can be obtained without additional tensile experiments.
Description
technical field [0001] The invention belongs to the field of ultrasonic non-destructive testing, in particular to an ultrasonic testing and tensile calibration test method of bonding strength level. Background technique [0002] Surface coating technology is based on understanding the failure mechanism of the surface of various metal parts and the characteristics of various metal materials, and endows the parts with the required properties such as high temperature resistance, wear resistance, corrosion resistance, oxidation resistance and fatigue resistance to improve the matrix For the purpose of improving the performance of materials, improving the reliability of parts and prolonging the service life, the surface coating technology of surface metallurgical strengthening or surface coating strengthening is used to protect or repair damaged parts. [0003] The development and application of various coatings and surface coating technologies have put forward higher and higher ...
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IPC IPC(8): G01N19/04
CPCG01N19/04G01N29/0645G01N29/07G01N29/09G01N2291/0237G01N2291/02827G01N2291/044G01N2291/048G01N2291/102G01N29/34
Inventor 徐春广贺蕾肖定国王秋涛
Owner BEIJING INSTITUTE OF TECHNOLOGYGY