WO2009065378A2 - Ensemble éprouvette pour l'essai d'un joint d'assemblage - Google Patents

Ensemble éprouvette pour l'essai d'un joint d'assemblage Download PDF

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Publication number
WO2009065378A2
WO2009065378A2 PCT/DE2008/001839 DE2008001839W WO2009065378A2 WO 2009065378 A2 WO2009065378 A2 WO 2009065378A2 DE 2008001839 W DE2008001839 W DE 2008001839W WO 2009065378 A2 WO2009065378 A2 WO 2009065378A2
Authority
WO
WIPO (PCT)
Prior art keywords
arrangement according
sample arrangement
joining
joint connection
joint
Prior art date
Application number
PCT/DE2008/001839
Other languages
German (de)
English (en)
Other versions
WO2009065378A3 (fr
Inventor
Thomas Bruder
Halvar Schmidt
Michael JÖCKEL
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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
Application filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Priority to EP08853096A priority Critical patent/EP2223076A2/fr
Publication of WO2009065378A2 publication Critical patent/WO2009065378A2/fr
Publication of WO2009065378A3 publication Critical patent/WO2009065378A3/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0296—Welds

Definitions

  • the invention relates to a sample arrangement for testing a joint connection under static and / or temporally variable loading, with at least two joining partners, which are connected to each other along at least one common contact area via the joint connection.
  • the aim is therefore to use as component-like samples, on the one hand allow a transferability of experimental knowledge of real components and on the other hand keep the constructive and financial costs for the realization of such samples within limits.
  • component-like samples a) comparable stiffness of the joining partners to the real component, b) similar stress state in the joining zone in comparison to real components, c) possibility of force redirection at the beginning and progress of the damage, d) possibility for Consideration of supporting effects between the at least two joining partners during sample damage.
  • KS-II sample A typical representative of detail samples is the so-called KS-II sample, which is illustrated in FIG. 2e and has two joining partners with a common overlap as the joining region.
  • KS-II sample is described in more detail in DE 195 22 247 B4 and is often used because of their low production costs and ease of testing in terms of strength and vibration resistance.
  • with an adhesive bond results in atypical homogeneous stress in the components in the Joining zone, for example, while it has only a very limited rigidity with a spot welded joint.
  • the KS-II sample is comparable to the properties of real components only with great reservations.
  • FIGS. 2a and b show such samples.
  • FIG. 2a shows a hat profile sample
  • FIG. 2b a double hat profile sample is shown.
  • Such hat profile samples have good accessibility to the joining plane for the metrological detection of damage events occurring during the load investigation and their temporal development with the continuation of the stress test.
  • Hutprofilproben are both by means of welding, adhesive and / or StanznietMISen available and have a mostly elongated joining region, only limited and very special stress conditions in the context of strength studies can be realized with these samples.
  • FIGS. 2c and 2d show a so-called H samples, which are shown in FIGS. 2c and 2d.
  • FIG. 2c shows a so-called H-shear tensile test
  • FIG. 2d shows a so-called H-lap tensile test sample.
  • the latter has, in contrast to the former, a common joining plane, along which the respectively joined joining partners are connected by means of the joining techniques mentioned above. If, for example, it is an adhesive seam, it may only have a predetermined line or a predetermined one due to geometry. Strip area between the two joining partners are applied, so that the adhesive seam beginning and the glued seam end each come to lie within the claimed sample area during the strength test. This can, however, areas for result in a damage initiation along the joint connection. Even with the H-samples known per se, only limited stress states which can be selected only in a very specific manner are possible, which are distinguished, for example, in the form of unrealistic, relatively uniform stress states within the joining zone.
  • the invention has for its object a sample arrangement for testing a joint under static and / or temporally varying load, with at least two joining partners, which are connected along at least one common contact area via the joint connection with each other, educate such that with the most cost-effective and structurally simple trainees Means a realistic as possible replica of the strength properties of joints on real components is possible.
  • a sample arrangement for testing a joint connection under static and / or temporally variable loading characterized by at least two joining partners, which are connected along at least one common contact area via the joint connection, characterized in that the joint connection is a continuous or discontinuous, linear or strip-like Form having a longitudinal extent, along which the joint connection is at least partially curved, and that at least one joining partner has a three-dimensional spatial form.
  • the solution according to the sample arrangement can realize a joint connection between two joining partners whose static and dynamic strength properties can be independently or largely independently of edge geometries of the joining partners themselves examined.
  • the sample arrangement designed in accordance with the solution has an at least sectionally curved linear or strip-shaped joint connection, along which the two joining partners enter into a material, force and / or positive connection with one another. Both joining partners arrive here via a common contact area in contact whose planar training with the line or strip-shaped region of the joint connection may be identical or surrounding this area.
  • the margins or marginal lines bordering the contact region of both joining partners have either straight-line or round contour shapes in a particularly advantageous manner, so that force or load maxima at acute-angled contour shapes which have a high damage potential are avoided.
  • a preferably curved or rectilinear edge contour of the contact area over which both joining partners come into contact with each other the possibility of a force diversion at the onset of damage or damage progress is given.
  • a check situation is created by a longitudinally extending at least partially curved joint connection between two joining partners in which possibly existing initial or end portions of the joint connection are not in the claimed sample area, which typically includes that area in which the curved configuration of the joint located.
  • the linear or strip-shaped joint connection is self-contained, for example in the form of a circular line, a circular ring or a ring-shaped form deviating from a circular shape.
  • the contact area between the two joining partners insofar as it is not identical in area with the joint connection itself, is formed in a form-retaining manner around the joint, i.
  • the contact region has, as it were, a circular ring or ring-shaped form whose edge regions have no corners or other acute-angled contours.
  • At least one joining partner formed three-dimensional, via which a targeted static and / or dynamic force entry takes place while the other joining partner is spatially fixed.
  • both joining partners are made of a flat material, such as e.g. from a sheet metal material, wherein the spatially formed joining partner, for example, by a forming thermoforming process a hollow mold open on one side as it were provided in the manner of a cup, which is at least partially surrounded by a flat trained collar portion which determines the area of contact with the other joining partner who in the
  • a flat material such as e.g. from a sheet metal material
  • the spatially formed joining partner for example, by a forming thermoforming process a hollow mold open on one side as it were provided in the manner of a cup, which is at least partially surrounded by a flat trained collar portion which determines the area of contact with the other joining partner who in the
  • the simplest case consists of a flat, sheet-shaped sheet metal.
  • the cup-shaped joining partner can have any desired shapes, such as in the manner of a round, oval-shaped, cuboid, truncated pyramid-shaped, pyramidal, frusto-conical or conical cup, which is in each case surrounded by a collar section adapted to the respective cross-sectional shape.
  • the cup-shaped joining partner is made of a uniform sheet material, however, it is advantageous to provide within the cup-shaped sheet metal recesses or material reinforcements in the form of Materialwandverdickitch or by providing more, the sheet material stiffening components in order to be able to make a desired inherent stiffness adaptation of the cup-shaped joining partner.
  • the provision of suitably positioned recesses within the spatial form of the cup-shaped joining partner makes it possible to introduce suitable sensors for metrological as well as visual monitoring of the joint during the performance of a strength test.
  • the cup shape concave peripherally surrounding collar portion which is flat and flat, the contact area for other joining partners, if the other joining partner is designed as a flat sheet.
  • the collar portion surrounds the cup shape completely, ie without interruption.
  • the ring-shaped contact area has at least partially interruptions. The shape and size of such interruptions may depend on the particular requirements after it is to be formed into a suitable sample arrangement designed in accordance with the solution.
  • FIG. 1 is a schematic diagram for a solution according to the embodiment of a sample arrangement
  • FIG. 3 longitudinal section through a solution designed in accordance with
  • FIG. 4 is a plan view of an embodiment shown in FIG. 3,
  • FIG. 5 alternative longitudinal sectional view of a solution according to the invention
  • FIG. 6a, b alternative embodiments for a sample arrangement.
  • FIG. 1 shows a highly schematized example for illustrating the sample arrangement designed in accordance with the solution, which provides a first joining partner 1, which has a three-dimensional spatial form, and a second joining partner 2, which is made of a flat material.
  • the over the plane of the joining partner 2 three-dimensional sublime joining partner 1 has a joining partner 1 at least partially surrounding Collar portion 3, which is also flat and flat as the joining partner 2.
  • Both joining partners 1 and 2 thus reach over the area formed collar portion 3 in mutual surface contact.
  • a line-shaped joint 4 is provided in the contact area, ie in the region of the collar section 3, which has at least one curved section 5.
  • the manner of the joint 4 is arbitrary to choose, such as in the form of a material, force and / or a positive connection. Particularly suitable here prove to be continuous or punctured trained adhesive or weld joints. Likewise, it is possible, alternatively or in combination with the abovementioned joint connections, to provide a plurality of punched rivet connections arranged along the line 4. In the case of the formation of the joint connection 4 in the form of a hybrid compound, the joint connection is suitable in a particularly advantageous manner as a spot-welded adhesive connection or as a stamped-and-stick adhesive joint.
  • Both joining partners 1, 2 are preferably made of a flat material, for example of a metal sheet, wherein the joining partner 1 for forming the three-dimensional spatial form can preferably be produced by way of a molding process, such as thermoforming process.
  • the in the embodiment shown in Figure 1 internal edge contour 6 of the collar portion 3 also has as the course of the joint 4 a curvature 6 *, especially the force is applied in carrying out a strength test on the spatially formed joining partner 1, as in detail yet with reference is explained on the other embodiments.
  • the flat-shaped joining partner 2 is firmly fixed in a fixing frame, whereas corresponding static or dynamic forces or moments of force act on the joining partner 1.
  • FIG. 3 shows a longitudinal section through a particularly preferred sample arrangement.
  • the joining partner 1, which has a three-dimensional spatial form, is configured in the exemplary embodiment according to FIG. 3 in the form of a cup having an oval-shaped cup shape whose plan view is shown in FIG.
  • the joining partner 2 is the same as the embodiment shown in Figure 1 made of a flat and sheet-shaped sheet metal material, which is fixed on both sides at its edge region via clamping means 7 to a fixed abutment. It is further assumed that both joining partners 1, 2 are connected to one another via the collar section 3 completely encircling the cup shape of the joining partner 1 by means of an annularly oval deformed surface joining connection, for example by means of an adhesive or welded connection 4. In this case, the contact region 3 between two joining partners 1 and 2 and the areal expansion of the joint 4 identical.
  • a means 8 is provided in the bottom region of the joining partner 1, which is designed in the form of a design formed separately from the joining partner 1 and is attached to the joining partner 1 by means of suitable joining technology. or in the form of a material thickening of the generally consisting of sheet metal joining partner 1 is formed.
  • a correspondingly reinforcing means 8 ' can be provided.
  • both joining partners 1, 2 include an inner, gas-tight closed volume.
  • a gas-tight connection to the volume V for internal pressure control is required, which is not shown in the drawing.
  • FIG. 5 shows a further embodiment, in particular for the alternative embodiment of the joining partner 2, which likewise shows a longitudinal section through the sample arrangement in FIG.
  • a peripheral bead 9 is provided to increase the surface rigidity of the planar newly formed joining partner 2.
  • Such a measure can be introduced to increase the surface stiffness in other areas of the joining partner 2 as well as within the joining partner 1.
  • an alternative variant for increasing the surface stiffness of the joining partner 2 is provided, in which a surface stiffness increasing means 8 'in the way of at least two screw 10 is connected to the joining partner 2.
  • both joining partners 1, 2 are cup-shaped and in each case provide a circumferential collar portion 3, 3 '.
  • both joining partners 1, 2 configured in the shape of a cup enclose an internal volume, in that the collar sections of both joining partners touch each other in a constellation in which the concave sides of both joining partners face one another.
  • the joining partner 2 which is slightly smaller than the joining partner 1 and has a cup-shaped design, opens with its convex side into the concave shape of the joining partner 1.
  • both joining partners are firmly connected via their respective collar portion by means of a joint connection.
  • Optional oval-shaped cup shape enables realistic non-uniform loading in the area of the joint, so that it is also possible to localize a possible start of damage before the start of the test. In contrast, a realization of a uniform stress by means of a circular cup shape is possible as it were.
  • sample assemblies designed in accordance with the invention are suitable for use in vibration resistance tests, fatigue tests, tensile strength tests, quality assurance and static strength tests.
  • Joining partners Joining partners Contact area Joining connection Curved area of joint connection Edge contour 'Curved edge contour Lateral fastening means Means for increasing the strength of the joining partner 1' Means for increasing the strength of the joining partner 2 S ance 0 Screw connections

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un ensemble éprouvette pour l'essai d'un joint d'assemblage sous charge statique et/ou variable dans le temps, lequel ensemble comprend au moins deux partenaires d'assemblage, reliés l'un à l'autre au moyen du joint d'assemblage le long d'au moins une zone de contact commune. L'invention se caractérise en ce que le joint d'assemblage se présente sous la forme d'une ligne ou d'une bande continue ou discontinue s'étendant longitudinalement et au moins partiellement courbée, et au moins un partenaire d'assemblage présente une forme tridimensionnelle.
PCT/DE2008/001839 2007-11-19 2008-11-07 Ensemble éprouvette pour l'essai d'un joint d'assemblage WO2009065378A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08853096A EP2223076A2 (fr) 2007-11-19 2008-11-07 Ensemble éprouvette pour l'essai d'un joint d'assemblage

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007055213.2 2007-11-19
DE102007055213 2007-11-19
DE102007061547A DE102007061547A1 (de) 2007-11-19 2007-12-20 Probenanordnung zur Prüfung einer Fügeverbindung
DE102007061547.9 2007-12-20

Publications (2)

Publication Number Publication Date
WO2009065378A2 true WO2009065378A2 (fr) 2009-05-28
WO2009065378A3 WO2009065378A3 (fr) 2009-07-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/001839 WO2009065378A2 (fr) 2007-11-19 2008-11-07 Ensemble éprouvette pour l'essai d'un joint d'assemblage

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EP (1) EP2223076A2 (fr)
DE (1) DE102007061547A1 (fr)
WO (1) WO2009065378A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010017348B4 (de) * 2010-06-14 2012-12-27 Ortwin Hahn Probenträger und Verfahren zur Prüfung von Verbindungen zwischen flächigen Materialzuschnitten unter definierten Belastungsrichtungen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757562A (en) * 1971-10-20 1973-09-11 Budd Co Method of impact testing a metallic structure
DE3317782A1 (de) * 1983-05-16 1984-11-22 Michail Alekseevic Zolotov Verfahren zur pruefung von blechen auf zweiachsigen zug durch einen hydrostatischen fluessigkeitsdruck bei verschiedenen temperaturen und vorrichtung fuer dessen durchfuehrung
US5033309A (en) * 1988-11-18 1991-07-23 The Commonwealth Of Australia Apparatus for measuring shear stress and strain characteristics of adhesives
DE19510366C1 (de) * 1995-03-22 1996-08-22 Hahn Ortwin Probe und Probenspannvorrichtung zum Einsatz in Zugprüfmaschinen
DE19522247B4 (de) 1995-03-22 2004-04-15 Hahn, Ortwin Verfahren zur Herstellung von Proben und Probenspannvorrichtung
FR2799997B1 (fr) * 1999-10-26 2001-12-07 Lorraine Laminage Tole composite destinee a l'emboutissage, comprenant une tole principale et au moins un flan de tole de doublage colle en sur-epaisseur
US7155958B2 (en) * 2004-11-10 2007-01-02 The Boeing Company Hole diameter measurement
DE102004055431A1 (de) * 2004-11-15 2006-05-24 Universität Kassel Verfahren zur Ermittlung mechanischer Eigenschaften eines Bauwerk-Bauteils
DE102005006786A1 (de) * 2005-02-14 2006-06-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Probe zur Belastungsuntersuchung einer Fügeverbindung sowie diesbezügliches Prüfverfahren
DE102005044505A1 (de) * 2005-09-16 2007-03-22 Zf Friedrichshafen Ag Verfahren und Anordnung zur Prüfung von Materialverbundsystemen
DE502006001325D1 (de) * 2006-02-08 2008-09-25 Siemens Ag Verfahren zum Herstellen einer Beschichtungsprobe
BRPI0621840A2 (pt) * 2006-06-30 2011-12-20 Airbus Espa A S L processo de controle de qualidade para uma junta ligada estrutural

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
WO2009065378A3 (fr) 2009-07-16
DE102007061547A1 (de) 2009-06-04
EP2223076A2 (fr) 2010-09-01

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