Laser ultrasonic automatic detection system and method for carbon fiber composite material blade

An automatic detection and laser ultrasonic technology, which is applied in the analysis of materials, material analysis by optical means, and analysis of solids using sonic/ultrasonic/infrasonic waves, etc., can solve the problems of low detection efficiency, large system size, and high cost. The effect of optimization, reduction of system volume, rapid and in-situ automatic detection

Active Publication Date: 2020-11-27
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0006] This application provides a laser ultrasonic automatic detection system and method for carbon fiber composite material blades, which are used to solve the problem of low detection efficiency, low resolution, high cost and relatively large system volume of carbon fiber composite material blades with large curvature in the prior art. big technical problem

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  • Laser ultrasonic automatic detection system and method for carbon fiber composite material blade
  • Laser ultrasonic automatic detection system and method for carbon fiber composite material blade
  • Laser ultrasonic automatic detection system and method for carbon fiber composite material blade

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Embodiment Construction

[0043] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0044] For ease of understanding, see figure 1 , a laser ultrasonic automatic detection system for carbon fiber composite blades provided by this application, including:

[0045] Pulse laser 1, optical fiber 2, two-dimensional laser vibrating mirror 3, field mirror 4, array air-coupled laser ultrasonic probe 6, multi-degree-of-freedom manipulator 7 and signal proc...

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Abstract

The invention discloses a laser ultrasonic automatic detection system and method for a carbon fiber composite material blade. Grid segmentation is carried out on the surface of a blade to form uniformgrid units; grid cells are scanned through a two-dimensional laser galvanometer; a laser ultrasonic signal is generated on the surface of the material corresponding to the corresponding grid unit; amulti-degree-of-freedom manipulator drives a pulse laser, the two-dimensional laser galvanometer, a field lens and an array type air coupling laser ultrasonic probe to move synchronously according toa preset movement track, so that the two-dimensional laser galvanometer can be used for sequentially scanning all the grid units, the array type air coupling laser ultrasonic probe correspondingly receives a laser ultrasonic signal generated by scanning of the array type air coupling laser ultrasonic probe; imaging is carried out according to laser ultrasonic signals, micron-scale high-precision detection of defects on the surface and inside the whole blade can be achieved, and the purposes of rapid and in-situ detection of the large-curvature curved surface of the carbon fiber composite material blade and miniaturization of the system are achieved.

Description

technical field [0001] The present application relates to the technical field of carbon fiber composite material detection, in particular to a laser ultrasonic automatic detection system for carbon fiber composite material and a corresponding method. Background technique [0002] At present, compared with blades made of metal materials, blades made of carbon fiber composite materials have great advantages, such as low density, high specific strength and specific stiffness. The weight of blades can not only save energy consumption and reduce costs, but also bring more possibilities for the progress of various technologies. For example, fan blades are one of the most important components of modern commercial aircraft engines. According to statistics, the mass of the fan section accounts for The total mass is about one-third, so it is a trend to develop larger and lighter carbon fiber composite blades, and it is also meaningful to study more detection methods for carbon fiber c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/265G01N29/28G01N21/17
CPCG01N29/041G01N29/265G01N29/28G01N21/1702G01N2291/023G01N2021/1706
Inventor 曾吕明何勇纪轩荣王宝定邓丽军
Owner GUANGDONG UNIV OF TECH
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