[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

WO2008080602A1 - Procédé d'analyse de la surface d'une pièce, notamment d'une structure de fibres et/ou d'une bande de fibres - Google Patents

Procédé d'analyse de la surface d'une pièce, notamment d'une structure de fibres et/ou d'une bande de fibres Download PDF

Info

Publication number
WO2008080602A1
WO2008080602A1 PCT/EP2007/011423 EP2007011423W WO2008080602A1 WO 2008080602 A1 WO2008080602 A1 WO 2008080602A1 EP 2007011423 W EP2007011423 W EP 2007011423W WO 2008080602 A1 WO2008080602 A1 WO 2008080602A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
reflection
workpiece
structural element
determined
Prior art date
Application number
PCT/EP2007/011423
Other languages
German (de)
English (en)
Inventor
Volker Breuer
Original Assignee
Isam Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE200620019726 external-priority patent/DE202006019726U1/de
Priority claimed from DE200610062522 external-priority patent/DE102006062522B3/de
Application filed by Isam Aktiengesellschaft filed Critical Isam Aktiengesellschaft
Publication of WO2008080602A1 publication Critical patent/WO2008080602A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N2021/8444—Fibrous material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects

Definitions

  • the invention initially relates to a method for analyzing and / or detecting the surface of a workpiece, in particular a fiber fabric and / or a fiber fabric of a component, vzw. a preform, with a surface structure, wherein the surface at least partially by the course of at least one fiber-like structural element, vzw. a plurality of fiber-like structural elements, in particular by a plurality of individual fibers and / or fiber bundles is or is structured, wherein the surface at least partially illuminated with at least one light source and the incident on the surface incident light from the fiber-like structural element or of the fiber-like structural elements at least partially is reflected and using the reflected light, a measurement image of the surface structure is determined.
  • the invention relates to a device for analyzing and / or detecting the surface of a workpiece, in particular a fiber fabric and / or a fiber fabric of a component, vzw. a preform, in particular working according to the aforementioned method, wherein the workpiece has a surface structure, wherein the surface at least partially by the course of at least one fiber-like structural element, vzw. a plurality of fiber-like structural elements, in particular by a plurality of individual fibers and / or fiber bundles, is structured, and wherein a light source for at least partially illuminating the surface of the workpiece is provided.
  • Fiber composites are becoming increasingly important due to their low weight and high strength.
  • many components made of carbon fibers are already produced in series and installed at various points in the automobile or aircraft.
  • the mechanical properties of such carbon fiber components are of crucial importance.
  • the position of the fiber bundles relative to the forces occurring in the components of importance or crucial. forces acting in the pulling direction of the fibers are absorbed in such components, in particular by the fiber bundles lying in this direction of pull or fibers extending in this direction of pull. In the printing direction, such forces are also absorbed by the resin compounds provided between the individual fibers.
  • An important point in the production of such carbon fiber components is therefore also the verification of the quality of the resulting carbon fiber (Preforms), especially before infiltration. So before the "Preform-Bauteü", the corresponding layers of sewn together fibers is infiltrated with resin or a suitable material, the quality, in particular the position of the fiber bundles must be checked.
  • the fiber elements of a lower layer can be visually visible as light or dark areas due to the existing "gaps" from above.
  • body structures that are made entirely of carbon fiber.
  • carbon fibers, carbon powder and resin are pressed together under high pressure and baked at 1500 degrees by infiltration with silicon to ceramic.
  • the body structure can therefore consist entirely of a carbon fiber composite material, which is also quite known as "CFRP".
  • CFRP carbon fiber composite material
  • CFRP weighs about 50% less than steel and also offers 30% weight advantage over aluminum.
  • the decisive factor is that "CFRP" can absorb extremely much energy even in the event of a collision. In particular, this impact energy is absorbed by the corresponding carriers, with the carbon fibers / carbon fibers tearing from front to back according to a precisely calculated deformation behavior.
  • the invention is therefore based on the object, the above-mentioned method or the device mentioned in such a way and further that the aforementioned disadvantages are avoided, in particular punctual quality checks of such workpieces are possible and in particular the position and / or Course of fiber-like structural elements, vzw. a fiber bundle is easily and accurately determined.
  • the object indicated above is now achieved - for the method - in that the light source emits parallel collimated light, that the collimated light impinges on the surface of the workpiece, namely on a region of the fiber-like structural element, which is for imaging possible reflections and / or a reflection pattern at least one projection surface is provided, wherein the existence of a reflection on the projection surface and / or a specific reflection pattern is determined and / or from the respective image of the reflection or the respective reflection pattern of the orientation angle of the fiber-like structural element or the fiber-like structural elements is determined relative to a particular axis and / or in a particular plane of the workpiece or be.
  • the light source is designed as a collimated light emitting light source that for imaging possible reflections and / or a reflection pattern at least one projection surface is provided that the light source directly or indirectly so is aligned, so that the parallel collimated light impinges on the surface of the workpiece, namely on a region of the fiber-like structural element, wherein the existence of a reflection on the projection surface and / or a specific reflection pattern can be determined and / or from the respective figure of Reflection or the respective reflection pattern of the orientation angle of the fiber-like structural element or the fiber-like structural elements relative to a certain axis and / or in a particular plane of the workpiece can be determined and / or calculated.
  • FIG. 1a shows a schematic representation of a light incidence / the reflection of parallel bundled light on a fiber-like structural turelement, in particular on a carbon fiber, shown from the front and
  • 1b is a schematic representation of a light incidence / the reflection of parallel bundled light on a fiber-like structural turelement, in particular on a carbon fiber, shown from the side,
  • Fig. 2 is a schematic representation of incident light on a fiber-like structural element, here a carbon fiber or the Reflection on a schematically represented projection plane,
  • 3a to 3c are schematic representations of the device according to the invention, in particular the beam path and the representation on the projection plane or the representation of the positions / orientation of two fiber-like structural elements,
  • FIGS. 4a to 4c show diagrammatic views partially in section of the analysis of the surface of a workpiece with parallel fiber-like structural elements and the resulting part
  • FIGS. 5a to 5c show diagrammatic views partially in section of the analysis of the surface of a workpiece with parallel first fiber-like structural elements and otherwise extending second fiber-like structural elements as well as the resulting reflection pattern
  • FIGS. 6a to 6c are schematic views partly showing the analysis of the surface of a workpiece with parallel first fiber-like structural elements and otherwise extending second fiber-like structural elements, as well as the resulting reflection patterns, namely in particular the determination of a "gap".
  • FIG. 1 to 6 show - at least partially - a method and a device 1 for analyzing and / or detecting the surface of a workpiece 2, here a fiber fabric and / or a fiber fabric of a component, vzw. a preform 2a.
  • the workpiece 2 has a specific surface structure, the surface being at least partially covered by the course of at least one fiber-like structural element a vzw. a plurality of fiber-like structural elements a and b, in particular by a plurality of individual fibers and / or fiber bundles, in particular carbon fibers, is structured or is.
  • the surface of the workpiece 2 is irradiated with at least one light source 3, wherein the light incident on the surface of the fiber-like structure elements a and b is at least partially reflected and using the reflected light, a measurement image of the surface structure of the workpiece 2 is determined.
  • Fig. Ia shows a schematic representation of a fiber-like structural element a from the front
  • Fig. Ib shows a schematic representation of a fiber-like structural element a from the side
  • FIGS. 1a and 1b here show a carbon fiber.
  • FIG. 1b shows the incidence of light on a fiber-like structural element a in at least a partial axial direction, namely with the angle of incidence ⁇ . ⁇ ⁇
  • FIGS. 1a and 1b therefore show the reflection geometry for a fiber-like structural element a on the basis of two sectional planes, namely perpendicular and parallel to the fiber direction of the fiber-like structural element a.
  • FIGS. 1a and 1b show the reflection on only one fiber-like structural element a by way of example; corresponding reflections result multiple times and partly overlapping for an illuminated workpiece 2 which has a plurality of fiber-like structural elements a and b, which will be explained in more detail below becomes.
  • FIG. 2 now shows a schematic representation of a fiber-like structural element a illuminated in the space with parallel collimated light, irradiated with the angle of incidence ⁇ , and shown.
  • ⁇ is exactly 90 ° degrees, as shown in FIGS. 1a and 1b, it would be apparent and imaginable, ie, with a vertical incidence of the corresponding parallel collimated light, the resulting cone of light would degenerate to the plane.
  • FIG. 2 a projection plane, namely a projection surface 4, which correspondingly intersects the light cone and is shown schematically, is shown.
  • a projection plane namely a projection surface 4, which correspondingly intersects the light cone and is shown schematically.
  • the reflecting on the projection surface 4 reflection line A here shown as a curved line. Therefore, only the curved reflection line A is formed on the projection surface 4, that is to say not the dotted surfaces, which are drawn here only to illustrate the light cone.
  • the reflection line A on the projection surface 4 then a straight line is shown, as shown in Fig. 3b, otherwise shown on the projection surface 4, and shown here in Fig. 2, a curved line as a reflection line A.
  • FIG. 3 a shows, in a schematic representation, at least partially from above a device 1 according to the invention, with the aid of which the method according to the invention is realized.
  • the method according to the invention is explained on a light beam shown schematically here in FIG. 3a or on the basis of the further illustration in FIGS. 3b and 3c, which will be explained in more detail below:
  • Fig. 3a shows first, the light source 3, which as a parallel-bundled light-emitting light source 3, vzw vzw. is designed as a laser 3a. Good to see is still the projection surface 4, the vzw as a projection screen 4a. is designed as frosted glass.
  • a workpiece 2 vzw. a preform 2a are positioned and / or fixed so that substantially the planar surface of the preform 2a is arranged substantially parallel to the surface of the projection surface 4.
  • the workpiece 2 so the preform 2a is not shown here in Fig. 3a in detail. (In FIGS. 4a, 5a and 6a, the workpiece 2 or preform 2a can be seen).
  • FIG. 3 a Shown in FIG. 3 a are only two individual fiber-like structural elements a and b in order to be able to explain the method according to the invention in more detail here.
  • FIGS. 3 a and 3 b or also FIGS. 4 to 6 show in the overall context or with reference to the respective coordinate systems (x, y, z axes) shown there, it can be clearly seen that the two fiber-like structural elements a and b, although essentially the same orientation, ie the same Alignment angle ß in the x- / y-plane, but the fiber-like structure element a lies exactly in the x- / y-plane, the fiber-like structure element b, however, with respect to this x- / y-plane slightly oblique or pierces, as shown by the Fig. 3a and 3c respectively shown here.
  • the light beam emitted by the laser 3a has vzw. a certain cross-sectional shape, vzw. a circular shape with a certain adjustable diameter, which is even more clearly seen in Figs. 4 to 6 and here in Figs. 3b and 3c more or less indicated by the point here recognizable.
  • the workpiece 2, so vzw. the preform 2a can now be arranged in a specific position relative to the projection surface 4, in particular at a distance r, whereby all positions and / or distances of the individual components of the system are substantially known or adjustable.
  • an image acquisition system 5 is provided, which in particular has at least one camera 5a. With the aid of this image acquisition system 5, the reflections and / or reflection patterns displayed on the projection surface 4, ie on the projection screen 4a, can then be detected as a measurement image.
  • the angle of incidence of the light beam of the laser 3a is now here in the illustrated embodiment of the device 1 indirectly passed through a non-descript mirror element on the surface of the workpiece 2, as shown.
  • the angle of incidence of the light beam of the laser 3 a on the workpiece 2 is known or can accordingly, vzw. can be set variably with the unspecified mirror element, or the laser 3a can be arranged so that it can act on the surface of the workpiece 2 in a direct manner with a light beam, this depends on the particular application.
  • the light source 3 in this case the laser 3a emits parallel bundled light, that the light bundled in parallel is directed onto the surface of the workpiece 2, namely onto a surface.
  • a projection screen 4a rich of the fiber-like structural element a or b incident that for imaging possible reflections and / or a reflection pattern at least one projection surface 4, here a projection screen 4a is provided, wherein the e- xistenz a on the projection surface 4 representing reflection and / or a specific Reflection pattern is determined and / or from the respective image of the reflection or the respective reflection pattern of the orientation angle ß of the fiber-like structure elements a and b relative to a particular axis, here the x-axis and / or in a particular plane of the workpiece, here in the x- / y-level is or will be determined.
  • FIGS. 4 to 6 How this is realized in a workpiece 2 with a plurality of fiber-like structural elements a and b respectively which reflection lines or reflection patterns arise here is shown in FIGS. 4 to 6, the beam path for two schematically illustrated fiber-like is first to be explained Structural elements a and b with reference to FIGS. 3a to 3c:
  • the image acquisition system 5, the light source 3 and the projection 4 form vzw. a kind of assembly within which the positioning of the individual components and their relative position to each other are known and / or can be adjusted. Also, the position of the workpiece 2, its position and fixation and the distance vzw. Here, the distance r to the screen 4 known accordingly.
  • the workpiece 2 vzw. positioned so that the surface to be examined of the workpiece 2 is substantially parallel to the projection surface 4, so the projection screen 4a is spaced.
  • the laser 3a emits parallel collimated light and throws it indirectly over the unspecified mirror element on the surface of the workpiece 2.
  • the light beam strikes the differently extending fiber-like structural elements a and b. Since the first fiber-like structure element a lies exactly in the x- / y-plane or extends here, the light beam strikes the first fiber-like structure element a at a 90 ° angle and is reflected accordingly from here, so that on the Projection screen 4a a projection line A images, which is formed as a straight line but slightly obliquely to the right, as shown in Fig. 3b.
  • This projection line A is due to the fact that the first fiber-like structural element a in the x- / y-plane likewise runs obliquely around this corresponding angle ⁇ , as shown in FIG. 3c. If the first fiber-like structural element a run parallel to the x-axis, the projection line A in FIG. 3b would run exactly vertically. Because of the corresponding image on the projection screen 4a, the corresponding angle ⁇ , as shown in FIG. 3b, can now be calculated accordingly.
  • the measurement image that is to say the projection line A
  • the angle ⁇ can be correspondingly calculated or determined with the aid of an evaluation unit.
  • the orientation angle corresponding to the above-determined angle ⁇ that is, the position of the first fiber-like structure element a in the x- / y-plane can thus be calculated or determined accordingly.
  • the beam path may now be explained as follows:
  • the laser 3a emits the parallel-collimated light beam, which then indirectly impinges on the second fiber-like structure element b via the mirror element (not further described), as shown in FIG. 3a. Since the second fiber-like structure element b just does not lie exactly in the x- / y-plane, but slightly oblique to this and pierces it, as shown in Fig. 3a, the light beam is correspondingly reflected at the angle ⁇ , as in Fig. 3a shown. On the basis of the explanations already given with regard to FIG. 2, a reflection also forms on the projection screen 4a, namely the reflection line B, but this appears curved here, as shown in FIG. 3b.
  • This reflection line B can also be detected by the image acquisition system 5 and evaluated accordingly, for which purpose a separate evaluation unit, not shown here, is provided.
  • the main fiber direction may be over the angle ⁇ be determined for this workpiece, so far as the orientation angle ß of the corresponding fiber-like structural elements a are calculated, which corresponds to the angle ß.
  • the respective reflection line or the respective reflection pattern a certain course and / or a specific orientation, which is determined via the image acquisition system 5.
  • the orientation angle ⁇ of a fiber-like structural element a within the plane of the surface of the workpiece, in this case the x / y plane can be determined and / or a fiber-like structural element running outside this plane, here the fiber-like structural element b as such.
  • FIG. 4 a shows a schematic representation of a workpiece 2 having a plurality of parallel, fiber-like structural elements a, which lie substantially in the corresponding x- / y-plane, not shown here.
  • the workpiece 2 is vzw. as a preform 2a, namely formed as a carbon fiber fabric.
  • 4b now shows the corresponding beam path, which is emitted by the laser 3a, not shown here, and is thrown over the mirror element 6 on the workpiece 2 accordingly.
  • FIGS. 1 shows a schematic representation of a workpiece 2 having a plurality of parallel, fiber-like structural elements a, which lie substantially in the corresponding x- / y-plane, not shown here.
  • the workpiece 2 is vzw. as a preform 2a, namely formed as a carbon fiber fabric.
  • 4b now shows the corresponding beam path, which is emitted by the laser 3a, not shown here, and is thrown over the mirror element 6 on the workpiece 2 accordingly
  • the reflection lines overlap, so that here a certain reflection pattern, namely a type of reflection pattern Reflection strip A is formed, which is imaged on the projection surface 4 and the projection screen 4a.
  • the orientation that is to say the angle ⁇ , as described in FIGS. 3 a to 3 c can now be ascertained or calculated via the evaluation unit via the corresponding image acquisition system 5. This is based on the reflection pattern, here of the reflection strip A of the main orientation angle, namely the orientation angle ß of the correspondingly extending fiber-like structure elements a is detected or detected.
  • FIGS. 5a to 5c now show that it is also possible to detect fiber-like structural elements b which extend outside the xy / y plane.
  • the essential difference of FIGS. 5a to 5c with respect to FIGS. 4a to 4c is that, in turn, a workpiece 2, that is to say a preform 2a, is examined here, and this in particular at a specific distance r, not shown here, to the projection surface 4 is arranged, but here run the majority of the fiber-like structure elements a substantially parallel and in the corresponding x- / y-plane, but one or more second fiber-like structure elements b just as similar as shown in Fig. 3a and 3c shown, ie just outside the x- / y-plane run.
  • FIG. 5b again shows the corresponding beam path
  • FIG. 5c showing the corresponding projection patterns A and B imaged on the projection screen 4a, namely here the corresponding reflection strip A due to the reflections from a plurality of first fiber-like structure elements a and the curved reflection strips B due to the projection of a plurality of second fiber-like structural elements b, which pierce the x- / y-plane, wherein here in FIG. 5a, for the sake of clarity, only one fiber-like structural element b is shown.
  • FIG. 5a for the sake of clarity, only one fiber-like structural element b is shown.
  • the orientation angle ⁇ ie the main orientation of the plurality of fiber-like structural elements a
  • further fiber-like structural elements b exist , which run outside of this XY plane, shown and recognizable by the Reflexxonsst Shape B in Fig. 5c.
  • the distribution of the fiber direction in the measuring range can be determined so that - in the end - not only the orientation angle ß is determined as such, but also on the distribution of the fibers in the measuring range a quality statement with respect to Workpiece 2 can be taken.
  • FIG. 6a to 6c initially show in FIG. 6a a properly arranged, positioned and formed workpiece 2, namely a preform 2a with a plurality of fiber-like structural elements a, which run substantially all parallel and properly in the x- / y-plane. Furthermore, however, in a lower plane than the plane in which the fiber-like structural elements a extend further structural elements b are shown, which extend substantially perpendicularly offset from the structural elements a.
  • this gap is detected during the scanning with the light beam by the fact that both within the corresponding diameter of the light beam Fiber directions can be detected, it is thus a reflection pattern imaged on the projection screen 4a, which is shown in Fig. 6c accordingly. It is therefore also possible that corresponding "gaps" in the surfaces of preforms 2a, in particular of carbon fiber fabrics, can also be determined with the aid of this method.
  • the device 1 according to the invention or the method according to the invention can therefore not only be used for preforms and for the investigation of carbon fiber preforms or carbon fiber components, but it is also conceivable that this method is used in glass fiber components or for the determination of Grinding marks on a ground surface and / or scratches on painted surfaces in order to determine the corresponding grinding marks etc.
  • the method or the device 1 can thus be applied where corresponding fiber-like structural elements 4 reflect light accordingly.
  • the corresponding reflection pattern is detected on the projection screen 4a and with the aid of an evaluation unit the orientation angle ⁇ is determined accordingly, so that the examined components correspondingly and / or sorted out, namely can be qualitatively examined / analyzed.
  • the orientation angle ß of the main fiber direction can be determined, but also fibers which extend outside this main orientation can be determined, wherein the surface of the workpiece 2 can be scanned point by point, which was previously not possible in the prior art.
  • the entire surface of the workpiece 2 can be analyzed if the surface is sampled selectively with the aid of the laser 3a.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

L'invention concerne un procédé et un dispositif d'analyse et/ou de détection de la surface d'une pièce (2), notamment d'une structure de fibres et/ou d'une bande de fibres. L'analyse est améliorée du fait que la source lumineuse (3) émet de la lumière mise en faisceaux parallèles, que la lumière mise en faisceaux parallèles est incidente sur la surface de la pièce (2), notamment sur une zone d'un élément structurel fibreux (a ou b), et qu'au moins une surface de projection (4) est prévue pour la reproduction de réflexions possibles et/ou d'un motif de réflexion (A ou B). L'existence d'une réflexion reproduite sur la surface de projection (4) et/ou d'un motif de réflexion spécifique (A ou B) est déterminée et/ou l'angle d'orientation (ß) du ou des éléments structurels fibreux par rapport à un axe défini et/ou un plan défini de la pièce est déterminé à partir de la reproduction respective de la réflexion ou du motif de réflexion respectif (A ou B).
PCT/EP2007/011423 2006-12-29 2007-12-27 Procédé d'analyse de la surface d'une pièce, notamment d'une structure de fibres et/ou d'une bande de fibres WO2008080602A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102006062522.6 2006-12-29
DE200620019726 DE202006019726U1 (de) 2006-12-29 2006-12-29 Vorrichtung zur Analyse und/oder Detektion der Oberfläche des eingangs genannten Werkstückes
DE202006019726.5 2006-12-29
DE200610062522 DE102006062522B3 (de) 2006-12-29 2006-12-29 Verfahren zur Analyse und/oder Detektion der Oberfläche eines Werkstückes, insbesondere eines Fasergeleges und/oder eines Fasergewebes eines Bauteiles, insbesondere eines Preforms und Vorrichtung zur Analyse und/oder Detektion der Oberfläche des eingangs genannten Werkstückes

Publications (1)

Publication Number Publication Date
WO2008080602A1 true WO2008080602A1 (fr) 2008-07-10

Family

ID=39387385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/011423 WO2008080602A1 (fr) 2006-12-29 2007-12-27 Procédé d'analyse de la surface d'une pièce, notamment d'une structure de fibres et/ou d'une bande de fibres

Country Status (1)

Country Link
WO (1) WO2008080602A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2952889A1 (fr) * 2014-06-06 2015-12-09 Hamilton Sundstrand Corporation Procédé et appareil de vérification de rayure
DE102021121442A1 (de) 2021-08-18 2023-02-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zur Prüfung eines nicht ausgehärteten Faserhalbzeugs auf Fehlerstellen und Vorrichtung zur Durchführung des Verfahrens

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UST932008I4 (en) * 1974-07-11 1975-03-04 Apparatus for determining fiber directionality in moving web structures
DD119314A1 (fr) * 1974-10-02 1976-04-12
US4606645A (en) * 1984-10-29 1986-08-19 Weyerhaeuser Company Method for determining localized fiber angle in a three dimensional fibrous material
US5241369A (en) * 1990-10-01 1993-08-31 Mcneil John R Two-dimensional optical scatterometer apparatus and process
US5640244A (en) * 1995-11-02 1997-06-17 Abb Industrial Systems, Inc. Method and apparatus for on-line determination of fiber orientation and anisotropy in a non-woven web
JPH11269789A (ja) * 1998-03-20 1999-10-05 Nippon Paper Industries Co Ltd 繊維配向計の信号正規化装置
RU2199739C2 (ru) * 2001-02-21 2003-02-27 Санкт-Петербургский государственный университет технологии и дизайна Дифракционный способ определения ряда основных характеристик ткани и тканеподобных материалов
DE202006019726U1 (de) * 2006-12-29 2007-03-22 Isam Ag Vorrichtung zur Analyse und/oder Detektion der Oberfläche des eingangs genannten Werkstückes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UST932008I4 (en) * 1974-07-11 1975-03-04 Apparatus for determining fiber directionality in moving web structures
DD119314A1 (fr) * 1974-10-02 1976-04-12
US4606645A (en) * 1984-10-29 1986-08-19 Weyerhaeuser Company Method for determining localized fiber angle in a three dimensional fibrous material
US5241369A (en) * 1990-10-01 1993-08-31 Mcneil John R Two-dimensional optical scatterometer apparatus and process
US5640244A (en) * 1995-11-02 1997-06-17 Abb Industrial Systems, Inc. Method and apparatus for on-line determination of fiber orientation and anisotropy in a non-woven web
JPH11269789A (ja) * 1998-03-20 1999-10-05 Nippon Paper Industries Co Ltd 繊維配向計の信号正規化装置
RU2199739C2 (ru) * 2001-02-21 2003-02-27 Санкт-Петербургский государственный университет технологии и дизайна Дифракционный способ определения ряда основных характеристик ткани и тканеподобных материалов
DE202006019726U1 (de) * 2006-12-29 2007-03-22 Isam Ag Vorrichtung zur Analyse und/oder Detektion der Oberfläche des eingangs genannten Werkstückes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
19000101, 1 January 1900 (1900-01-01), XP009100585 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2952889A1 (fr) * 2014-06-06 2015-12-09 Hamilton Sundstrand Corporation Procédé et appareil de vérification de rayure
DE102021121442A1 (de) 2021-08-18 2023-02-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zur Prüfung eines nicht ausgehärteten Faserhalbzeugs auf Fehlerstellen und Vorrichtung zur Durchführung des Verfahrens

Similar Documents

Publication Publication Date Title
DE102013112260B4 (de) Verfahren und Vorrichtung zum Erkennen von Fehlstellen von abgelegten Faserhalbzeugen
DE69627328T2 (de) Verfahren und vorrichtungen zur prüfung von beschichtungen
EP0947802B1 (fr) Dispositif de détection des dimensions de pièces d' essai,de préférence de corps creux,en particulier des alésages dans des pièces à usiner,ainsi que procédé de mesure de telles dimensions
EP2131145B1 (fr) Dispositif de surveillance optique
DE102012220923B4 (de) Messung einer faserrichtung eines kohlefaserwerkstoffes und herstellung eines objekts in kohlefaserverbundbauweise
DE102009058215B4 (de) Verfahren und Vorrichtung zur Oberflächenprüfung eines Lagerbauteils
EP3432266A1 (fr) Procédé et dispositif de détection de défauts
DE2602001A1 (de) Pruefverfahren zum getrennten erfassen von unterschiedlichen werkstueckoberflaechenfehlern und anordnung zur durchfuehrung des verfahrens
WO2007121953A1 (fr) Dispositif pour appliquer ou créer automatiquement et surveiller automatiquement une structure appliquée sur un support avec détermination de dimensions géométriques, procédé associé
DE102004007828A1 (de) Verfahren und System zur Inspektion von Oberflächen
DE102009009272A1 (de) Qualitätsprüfung für Rotorblätter einer Windenergieanlage
DE102014100594A1 (de) Vorrichtung zur Inspektion eines mit einer beschichteten Oberfläche versehenen Materials und entsprechendes Verfahren
EP1112555B1 (fr) Procédé et dispositif pour contrôler l'état des papiers de valeur utilisant de mesure fond noir et fond clair.
DE2827704B2 (de) Optische Vorrichtung zur Bestimmung der Lichtaustrittswinkel
DE102018119697A1 (de) Messvorrichtung mit optischer Messanordnung und Verfahren zum Durchführen einer optischen Abstandsmessung mit einer solchen Messanordnung
EP3736557A1 (fr) Procédé et dispositif de détection tridimensionnelle d'une surface de matière fibreuse
EP4151948A1 (fr) Procédé et dispositif de contrôle de la qualité d'un bord d'une pièce à usiner en forme de plaque
EP1544605A2 (fr) Méthode et dispositif de vérification de dommages sur le filetage d'un élément de connexion
EP2144052A1 (fr) Procédé et dispositif de détection et de classification de défauts
DE202006019726U1 (de) Vorrichtung zur Analyse und/oder Detektion der Oberfläche des eingangs genannten Werkstückes
WO2008080602A1 (fr) Procédé d'analyse de la surface d'une pièce, notamment d'une structure de fibres et/ou d'une bande de fibres
DE102011056415A1 (de) Verfahren zur Herstellung eines Faserverbundbauteils mit integrierter Qualitätskontrollfunktion sowie Fasermatte mit Qualitätskontrollfunktion
DE102006062522B3 (de) Verfahren zur Analyse und/oder Detektion der Oberfläche eines Werkstückes, insbesondere eines Fasergeleges und/oder eines Fasergewebes eines Bauteiles, insbesondere eines Preforms und Vorrichtung zur Analyse und/oder Detektion der Oberfläche des eingangs genannten Werkstückes
WO2001023869A1 (fr) Procede et dispositif pour inspecter la surface d'un feuillard circulant en continu
WO1998048243A1 (fr) Dispositif et procede pour le controle d'une surface d'un objet

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07866267

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07866267

Country of ref document: EP

Kind code of ref document: A1