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Method for detecting defect of blade, and method for maintaining defect of blade

A defect detection and blade technology, which is applied to optical testing of defects/defects, measuring devices, and material analysis by optical means, etc., can solve problems such as false detection, and achieve the effect of arranging maintenance time, high detection accuracy, and reasonable maintenance time.

Active Publication Date: 2019-08-27
中新红外科技(武汉)有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

At present, manual visual inspection is generally used on the market. Visual inspection can only see surface defects, and can only rely on experience for subsurface defects, which often leads to false detection. In addition, this detection method is often only to grasp the current state of the blade.

Method used

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  • Method for detecting defect of blade, and method for maintaining defect of blade

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Embodiment Construction

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0031] Such as figure 1 As shown, a blade defect detection method includes the following steps:

[0032] S100a. Acquiring an overall target image of the blade;

[0033] S200a. Detecting the surface of the blade based on an optical detection method and detecting defects under the skin of the blade by an active infrared detection method;

[0034] S300a. Mark the detected defects on the target image.

[0035] If the step S100a cannot be completed at one time when acquiring the target image of the whole blade, multiple images of the blade can be collected, and then these multiple photos are spliced ​​to obtain the target image of the whole blade.

[0036] The step S300a is specifically as follows:

[0037] S310a, ex...

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Abstract

The invention relates to a method for detecting a defect of a blade, which comprises the following steps: S100a, acquiring a target image of the whole blade; S200a, detecting a defect of the surface of the blade based on an optical detection method and detecting a defect under the skin of the blade by an active infrared detection method; and S300a, marking the detected defects on the target image.The method of the invention has the advantages that: the defects of the surface of the blade and the detects under the skin of the blade can be detected through optical and infrared detection, and the defects are marked in the whole image of the blade, so that the condition of the blade can be checked in the later period conveniently; in addition, when the blade is detected subsequently, the marked defects can be focused; and compared with manual detection, the method has high detection precision and small error, and can detect the internal defects which cannot be observed by naked eyes.

Description

technical field [0001] The invention relates to the technical field of fan blade detection, in particular to a blade defect detection method and maintenance method. Background technique [0002] During the long-term working process, the fan blades are vulnerable to the impact of wind, sand and rocks, and the surface and interior of the blades will have defects of varying degrees. At present, manual visual inspection is generally used on the market. Visual inspection can only see surface defects, and can only rely on experience for subsurface defects. This often leads to misdiagnosis. In addition, this inspection method is often only to grasp the current state of the blade. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a blade defect detection method and maintenance method to overcome the above-mentioned deficiencies in the prior art. [0004] The technical scheme that the present invention solves the problems ...

Claims

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Application Information

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IPC IPC(8): G01N21/95
CPCG01N21/9515
Inventor 李建明郑燕曾强雁赵龙
Owner 中新红外科技(武汉)有限公司
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