Ultrasonic guided wave detection method for bonding strength of coating
An ultrasonic guided wave and combined strength technology, which is applied in the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, material analysis using sound waves/ultrasonic waves/infrasonic waves, and measurement devices, can solve the problem of large additional influence of the matrix, large near-field blind areas, and detection Problems such as low resolution, to overcome the large near-field blind zone, low cost, and accurate evaluation
Active Publication Date: 2021-07-27
国能锅炉压力容器检验有限公司
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[0016] Aiming at the deficiencies in the existing detection methods, the present invention provides an ultrasonic guided wave detection method for the bonding strength of the coating. The existing ultrasonic longitudinal wave detection method has inherent shortcomings such as large near-field blind area, many clutter signals on the joint surface, low detection resolution, and large additional influence of the matrix, so as to improve the accuracy of the detection results
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[0074] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0075] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the d...
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The invention discloses an ultrasonic guided wave detection method for coating bonding strength, which comprises the following steps of manufacturing a ten-stage square bonding sample for ultrasonic guided wave detection, setting up a special ultrasonic guided wave coating bonding strength detection system, calculating the ultrasonic guided wave method bonding strength coefficient of the ten-stage square bonding sample, performing a coating strength tensile test on a ten-stage square bonding sample for ultrasonic guided wave detection, calculating equivalent bonding strength, performing ultrasonic guided wave detection on an actual detected piece, and calculating a coating bonding strength value. The method provided by the invention overcomes the inherent defects of large near-field blind area, many clutter signals of the bonding surface, low detection resolution, great influence on the sound transmission of the matrix and the like of the existing ultrasonic longitudinal wave detection method, and can perform numerical quantification on the tensile test detection result of the bonding coating strength, thereby realizing graded evaluation of the bonding strength of the coating and the matrix of the workpiece. The detection process is low in cost, destructive evaluation of auxiliary equipment or related materials is not needed, and the method has a very positive effect on evaluation of the coating combination quality monitoring of the detected piece.
Description
technical field [0001] The invention relates to the technical field of non-destructive testing of coating bonding strength, in particular to an ultrasonic guided wave testing method of coating bonding strength. Background technique [0002] Coating technology is an important technology in modern material surface strengthening treatment technology, which is widely used in the manufacture and repair of aerospace, weapons, power equipment, and engines of transportation equipment. [0003] A good bond (high bond strength) between the coating and the base material is the most important prerequisite for the function of the coating. Indentation method, swelling method, torsion method, stretching, bending and other mechanical methods are usually used to measure the bonding strength of the interface between the coating and the substrate, but it will cause certain damage to the material itself. Non-destructive testing methods for indestructible sampling and coating bonding strength o...
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IPC IPC(8): G01N29/11G01N29/04G01N19/04G01N29/24G01N1/28
CPCG01N29/11G01N29/041G01N29/04G01N19/04G01N29/2437G01N1/28G01N2291/015G01N2291/023G01N2291/02827G01N2291/102
Inventor 王强董勇军陶业成纳日苏张曰涛罗为民代小号郝晓军
Owner 国能锅炉压力容器检验有限公司
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