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Methods and apparatus for generating a mask

一种掩模、模板的技术，应用在生成用来检查物体的掩模领域，能够解决没有夹具、避开物体等问题

Inactive Publication Date: 2007-05-02
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the typical duct tape mask is attached to the light source in a geometric pattern, which is not effective in keeping the fixture away from the object.

Method used

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  • Methods and apparatus for generating a mask
  • Methods and apparatus for generating a mask
  • Methods and apparatus for generating a mask

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0011] FIG. 1 is a block diagram of an exemplary embodiment of a structured light measurement system 10 designed to measure a plurality of surface features of an object 12 . For example, system 10 may be designed to inspect and determine the surface of an object, where the surface may include features such as slopes, bends, twists, and / or warps when compared to a model representing object 12 . FIG. 2 is a perspective view of a portion of the system 10 shown in FIG. 1 .

[0012] In the exemplary embodiment, object 12 is a rotating blade such as, but not limited to, a compressor or turbine blade used in a gas turbine engine. Accordingly, in the exemplary embodiment, object 12 includes airfoil 14 extending from platform 16 . While the following description is directed to inspecting blades of gas turbine engines, one of ordinary skill in the art will appreciate that system 10 can be used to enhance structured light imaging for any object.

[0013] The system 10 also includes a s...

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PUM

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Abstract

A method (100) for producing a mask (52) for use in a light measurement system (10) comprising a light source (22) for projecting light onto a surface of an object (12), and An imaging system for receiving light reflected from the surface of the object. The method includes determining (102) a contour of an object to be inspected, and generating (104) a mask based on the determined contour, wherein the mask includes an opening (172) extending therein, the contour of the opening as viewed from a light source corresponding to The contours of the objects are substantially matched.

Description

technical field [0001] The present invention relates generally to inspecting objects, and more particularly to methods and apparatus for generating masks for inspecting objects. Background technique [0002] Objects are sometimes inspected, for example, to determine the size and / or shape of all or a portion of the object, and / or to inspect the object for defects. For example, gas turbine engine components, such as turbine or compressor blades, are inspected for fatigue cracks that can be caused by engine-induced vibration, mechanical and / or thermal stress. Also, for example, some gas turbine engine blades are examined for deformation conditions such as platform orientation, profile cross-section, bow and twist along the stack axis, thickness, and / or chord length at a given cross-section. Continued operation of an object having one or more defects may degrade the performance of the object and / or result in damage to the object over time, such as when a crack propagates throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/00G01N21/95G01N21/41G01B11/00G01B11/02G01B11/24G01M15/00G01M15/02
CPCG01B11/2513
Inventor K·G·哈丁X·钱R·S·德穆思
Owner GENERAL ELECTRIC CO
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