EP3069116A1 - Verfahren zum überprüfen eines bauelements - Google Patents
Verfahren zum überprüfen eines bauelementsInfo
- Publication number
- EP3069116A1 EP3069116A1 EP14790578.0A EP14790578A EP3069116A1 EP 3069116 A1 EP3069116 A1 EP 3069116A1 EP 14790578 A EP14790578 A EP 14790578A EP 3069116 A1 EP3069116 A1 EP 3069116A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- damage
- component
- fiber composite
- deformation
- plastic
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0033—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining damage, crack or wear
Definitions
- the present invention relates to a method for checking a component.
- the method is for determining damage of the component.
- Hybrid structures are usually a combination of several materials, with one material usually completely obscuring the other material. Thus, a detection of damage to the hidden material is possible only with great effort.
- Visual inspection, ultrasonic testing or thermography and other non-destructive testing methods are usually used to check such hybrid structures. However, all these methods are very unsafe (in particular visual inspection) and / or require specialized personnel and expensive equipment (especially ultrasonic testing, thermography) and therefore do not provide a satisfactory solution.
- the object is achieved by a method for checking a component in which a plastic deformation is examined.
- the device under test is a hybrid structure comprising a first body and a second body.
- the plastic deformation of the second body is examined to determine a degree of deformation. If the degree of deformation exceeds a predefined reference value, damage to the first body is inferred.
- a stability of the hybrid structure is achieved in that in particular the first body and the second body are mutually supported.
- the invention provides that is inferred in a corresponding plastic deformation on a lack of support. If such a support is no longer or only limited kt be present, it is to close a damage to the hybrid structure, in particular the first body.
- the dependent claims have preferred developments of the invention to the content.
- the first body is surrounded by the second body.
- the first body is completely surrounded by the second body.
- according to the invention can be safely and reliably closed to damage the first body.
- the first body is a fiber composite material.
- Fiber composites are usually only plastically deformable to a small extent. Thus, from a certain elastic deformability of Component to assume that the fiber composite material is damaged.
- the fiber composite material is a fiber composite plastic.
- the fiber composite plastic is in particular a glass fiber composite plastic and / or a carbon fiber composite plastic. According to the invention, other fiber composites are possible, in particular aramid fiber composite plastic.
- the plastic deformation of a component is examined, the second body is made of a metallic material.
- Metallic materials are usually very good plastically deformable. This plastic deformability counteracts a supporting effect of the first body.
- a damage of the first body which is recognizable by the method according to the invention, is a fraction of the first body.
- the damage is a detachment of a bond of the first body with the second body.
- other types of damage are possible, which can be seen with the method according to the invention.
- the inventive method according to the particularly preferred embodiment therefore allows an extent of the damage and thus a scope of a possible repair to be estimated already on the basis of the plastic deformation of the second body.
- the predefined reference value according to the invention is advantageously to be determined on the basis of the aterial parameters of the first body and / or of the second body. Furthermore, the reference value depends in particular on a geometry of the component and on the dimensions of the first body and the second body. Such a reference value can be found in particular by the plastic deformation of a reference component.
- the invention relates to a use of the method that has been described above, for determining damage to components of a vehicle. Especially in workshops, it is often not possible to cope with the great effort that provides the state of the art for finding damage.
- the method described above offers surprising advantages in determining damage to components of a vehicle. Further details, features and advantages of the invention will become apparent from the following description and the accompanying figure. It shows;
- FIG. 1 is a schematic view of a component to which the inventive method is applied according to an embodiment.
- FIG. 1 shows a component 1 which comprises a first body 2 and a second body 3.
- the component 1 is a strut which is formed from a hollow profile.
- the first body 2 is a Faserverbundkun material, which is completely surrounded by a metallic material.
- the resulting component 1 is therefore a hybrid structure, which is often used in vehicles because of their high tensile strength with equally low weight.
- Figure 1 it is shown that the component 1 is damaged.
- the first body 2 has a damage 4, since the fiber composite plastic is broken in one place.
- a stability of the component 1 is no longer guaranteed.
- the first body 2 is completely surrounded by the second body 3 and the second body 3 has only plastic deformation 5, such damage 4 can not be detected by visual inspection.
- complex procedures would have to be used to identify the damage 4.
- the inventive method according to the embodiment provides a very simple solution. Due to the plastic deformation 5 of the second body 3, a conclusion on the damage 4 is allowed. Since the plastic deformation 5 of the second body 3 exceeds a reference value, the damage 4 of the first body 2 can be assumed. Should the plastic deformation 5 not exceed the reference value, then it can be assumed that the first body 2 is intact.
- the inventive method is therefore a simple and low-cost method to detect damage to components 1, which are used in particular in vehicles.
- the inventive method according to the embodiment shown is a surprisingly simple alternative to the methods known from the prior art.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013223262.4A DE102013223262A1 (de) | 2013-11-14 | 2013-11-14 | Verfahren zum Überprüfen eines Bauelements |
PCT/EP2014/073049 WO2015071083A1 (de) | 2013-11-14 | 2014-10-28 | Verfahren zum überprüfen eines bauelements |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3069116A1 true EP3069116A1 (de) | 2016-09-21 |
Family
ID=51842515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14790578.0A Ceased EP3069116A1 (de) | 2013-11-14 | 2014-10-28 | Verfahren zum überprüfen eines bauelements |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3069116A1 (de) |
CN (1) | CN105556273A (de) |
DE (1) | DE102013223262A1 (de) |
WO (1) | WO2015071083A1 (de) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6327921B1 (en) * | 2000-03-03 | 2001-12-11 | Iowa State University | Non-destructive inspections and the display of inspection results |
DE102005052644A1 (de) * | 2005-11-04 | 2007-05-24 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren und Vorrichtung zur Strukturüberwachung und Schadensfrüherkennung bei Fahrzeugen |
FR2913898B1 (fr) * | 2007-03-23 | 2009-05-08 | Alcan Rhenalu Sa | Element structural en alliage d'aluminium incluant un capteur optique. |
DE102009027807A1 (de) * | 2009-07-17 | 2011-03-10 | Airbus Operations Gmbh | Detektionsverfahren und Detektionsvorrichtung zum Detektieren von Kernschäden und Ablösungen in Sandwichstrukturen |
DE102009060735B4 (de) * | 2009-12-29 | 2012-10-31 | Airbus Operations Gmbh | Vorrichtung und Verfahren zur Detektion einer Fehlstelle in einem Bauteil |
DE102010026659A1 (de) * | 2010-07-09 | 2012-01-12 | Daimler Ag | Hybridbauteil sowie Verfahren zum Überprüfen eines solchen Hybridbauteils |
EP2595877B1 (de) * | 2010-07-20 | 2016-05-11 | Airbus Operations GmbH | Strukturbauteil mit zumindest einer hauptlast-tragenden beplankungsschale und einer trägerstruktur zur befestigung der hauptlast-tragenden beplankungsschale sowie strömungskörper mit einem solchen strukturbauteil |
CN103380057B (zh) * | 2010-09-29 | 2016-10-05 | 航空机器股份有限公司 | 飞机的无损检测的创新系统和方法 |
DE102010049564A1 (de) * | 2010-10-25 | 2012-04-26 | Daimler Ag | Vorrichtung zum Erfassen einer mechanischen Schädigung eines Bauteils |
US20120166102A1 (en) * | 2010-12-23 | 2012-06-28 | Edward James Nieters | Method and system for online creep monitoring |
DE102012000603A1 (de) * | 2012-01-14 | 2012-10-11 | Daimler Ag | Verfahren zum Delektieren einer möglichen Beschädigung eines Kraftwagenbauteils |
DE102012020015A1 (de) * | 2012-09-14 | 2013-03-21 | Daimler Ag | Verfahren zur beschädigenden Prüfung von Probegegenständen |
-
2013
- 2013-11-14 DE DE102013223262.4A patent/DE102013223262A1/de not_active Withdrawn
-
2014
- 2014-10-28 EP EP14790578.0A patent/EP3069116A1/de not_active Ceased
- 2014-10-28 WO PCT/EP2014/073049 patent/WO2015071083A1/de active Application Filing
- 2014-10-28 CN CN201480050901.XA patent/CN105556273A/zh active Pending
Non-Patent Citations (4)
Title |
---|
ABDULLAH M R ET AL: "The impact resistance of polypropylene-based fibre-metal laminates", COMPOSITES SCIENCE AND TECHNOLOGY, ELSEVIER, AMSTERDAM, NL, vol. 66, no. 11-12, 1 September 2006 (2006-09-01), pages 1682 - 1693, XP027988120, ISSN: 0266-3538, [retrieved on 20060901] * |
M KAWAI ET AL: "INELASTIC BEHAVIOR AND STRENGTH OF FIBER-METAL HYBRID COMPOSITE: GLARE t0 and K", INT. J. MECH. SCI, 1 January 1998 (1998-01-01), pages 183 - 198, XP055432438, Retrieved from the Internet <URL:https://ac.els-cdn.com/S0020740397000489/1-s2.0-S0020740397000489-main.pdf?_tid=59105c42-da7a-11e7-af88-00000aacb362&acdnat=1512560647_34f05f950bd4e869f48c4a29e58ab026> * |
SADIGHI M ET AL: "Impact resistance of fiber-metal laminates: A review", INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, PERGAMON, GB, vol. 49, 21 May 2012 (2012-05-21), pages 77 - 90, XP028409345, ISSN: 0734-743X, [retrieved on 20120601], DOI: 10.1016/J.IJIMPENG.2012.05.006 * |
See also references of WO2015071083A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102013223262A1 (de) | 2015-05-21 |
WO2015071083A1 (de) | 2015-05-21 |
CN105556273A (zh) | 2016-05-04 |
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