Turbine blade coating thickness optical scanning holographic measurement method

A technology of coating thickness and measurement method, which is applied in the field of turbine blade cooling design, can solve the problems of poor measurement accuracy of turbine blades and difficulty in realizing all-round measurement

A technology of coating thickness and measurement method, which is applied in the field of turbine blade cooling design, can solve the problems of poor measurement accuracy of turbine blades and difficulty in realizing all-round measurement

CN114754686APending Publication Date: 2022-07-15AECC SHENYANG ENGINE RES INST
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  • Turbine blade coating thickness optical scanning holographic measurement method
  • Turbine blade coating thickness optical scanning holographic measurement method
  • Turbine blade coating thickness optical scanning holographic measurement method

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Experimental program
Comparison scheme
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specific Embodiment approach

[0030] As a specific embodiment, it also includes a control method of the optical scanning device, specifically:

[0031] Register the initial position and initial angle of the structured light projector and the camera imaging system in the main controller;

[0032] The light scanning device is in trial operation. The structured light projector transmits the speed of light to an area of ​​the blade and then transmits the image to the camera imaging system to form a set of images and transmit the image to the main controller;

[0033] Control the projector moving mechanism to drive the structured light projector to move to the next position, the imaging system moving mechanism drives the camera imaging system to move to the next position, the structured light projector and the camera imaging system work and scan the image of another position of the blade, and at the same time Position information, angle information, and image information are transmitted to the main controller; ...

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Abstract

The invention belongs to the field of turbine blade cooling design, and relates to a turbine blade coating thickness optical scanning holographic measurement method, when the coating thickness of a blade is measured, the blade sprayed with a coating is firstly installed on an optical scanning device through an optical scanning technology, the blade is comprehensively scanned through the optical scanning device, and three-dimensional parameters are recorded; forming a first model; the blade is taken down and then subjected to coating spraying, the blade subjected to coating spraying is installed on the optical scanning device again to be subjected to comprehensive scanning, three-dimensional parameters are recorded, a second model is formed, the first model and the second model are imported into the same software to be compared and analyzed, and a coating three-dimensional model is obtained; and the thickness of each position of the coating can be accurately and quickly obtained. The device is simple in structure, convenient to operate, high in measurement precision and capable of effectively avoiding the problem that the thermal barrier coating is damaged in the measurement process, meanwhile, full-automatic measurement can be achieved, and the quality stability and consistency of the thermal barrier coating are guaranteed.

Description

technical field [0001] The application belongs to the field of turbine blade cooling design, and in particular relates to a method for measuring the thickness of a turbine blade coating thickness by optical scanning holography. Background technique [0002] Thermal barrier coating is an important technology for thermal protection of high-pressure turbine guide vanes. The thickness of thermal barrier coating directly affects the thermal insulation effect of thermal barrier coating and the temperature bearing capacity of high guide vanes. Ensuring the thickness uniformity, quality stability and consistency of the thermal barrier coating in manufacturing is one of the key factors to ensure that the turbine cooling blades can achieve the design goals. [0003] At present, there are two main methods for measuring the thickness of thermal barrier coatings on turbine blades: eddy current testing technology based on ultrasound and measuring the thickness of thermal barrier coatings ...

Claims

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Application Information

Patent Timeline
15 Jul 2022
Publication
CN114754686A
IPC
G01B11/06
CPC
G01B11/06
Inventors
陈泽; 程荣辉