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Method for non-destructive testing of blade preforms

A preformed, non-destructive technology, used in jet engine testing, gas turbine engine testing, image analysis, etc., to solve problems such as unreliability, unsuitability for fan blade preforms, long inspection times, etc., to improve accuracy Effect

Active Publication Date: 2017-04-05
SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this technique requires lengthy detection times and has proven unreliable as it depends on laser aiming performed manually by the operator
In addition, it does not make it possible to measure the position of the intersection point except in a plane substantially parallel to the plane of movement of the laser, it does not make it possible to take into account the position of the intersection point along the axis of the laser, and is therefore not suitable for woven fan blades Preforms that are not flat and are highly curved in three dimensions

Method used

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  • Method for non-destructive testing of blade preforms
  • Method for non-destructive testing of blade preforms
  • Method for non-destructive testing of blade preforms

Examples

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Embodiment Construction

[0037] figure 1 Schematically showing a device for carrying out the method proposed in the context of the present invention for performing non-destructive testing of preforms of woven fan blades, this device 10 comprises a frame 12 and a plate 16, wherein said frame 12 carries a Parallelepiped-shaped chamber 14, said plate 16 is movable along a horizontal direction 18 between a first position in which it is outside the chamber 14 and a second position in which it is inside the chamber 14 ( image 3 ). The movable plate 16 carries a support 20 on which the blade preform 22 is placed in a predetermined position. The chamber 14 includes a panel 24 that is translatable in a direction 26 perpendicular to the horizontal direction 18 and exposes an opening through which the plate 16 moves to enter the chamber 14 ( figure 1 ).

[0038] figure 2 The support 20 of the woven blade preform is shown. This support comprises several protrusions 28 sized and distributed to position the ...

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Abstract

An automated method for the non-destructive testing of a woven preform for the manufacture of a turbine engine part and including a plurality of first marker threads intertwined with second marker threads, the first and second threads having light-reflecting properties that are different from those of the threads of the preform and being woven with the threads of the preform so as to form a surface grid on a given area of the preform. The method includes determining, with a plurality of consecutive steps, the spatial coordinates of the intersections between the first and second marker threads.

Description

technical field [0001] The present invention relates to a method for non-destructive testing of woven preforms, such as turboengine fan blade preforms. Background technique [0002] Currently, fan blades are manufactured by weaving a preform, followed by injecting resin into the preform. Before resin injection, it is important to check certain parameters of the woven preform, such as fiber density and fiber orientation. [0003] For this purpose, it is known to produce a grid on the outer surface of the blade, for example the pressure side or the suction side of the blade, this grid being made with first and second marking lines intertwined. [0004] To determine the location of the mesh intersections, the woven preform is placed opposite an arm supporting the laser, said arm being movable in a plane parallel to the horizontal plane facing the preform. The operator continuously moves the laser at different intersections of the grid so that the laser illuminates the interse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00
CPCG06T7/0008G06T7/001G06T2207/10152G06T2207/20164G06T2207/30108G01M15/14
Inventor 飞利浦·马普尔伯特兰·皮埃尔·马丁·勒瑞尔克劳德·雷尼蒂
Owner SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A