WO2007131482A1 - Dispositif et procédé pour vérifier la stabilité de mandrins de bobinage - Google Patents

Dispositif et procédé pour vérifier la stabilité de mandrins de bobinage Download PDF

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Publication number
WO2007131482A1
WO2007131482A1 PCT/DE2007/000860 DE2007000860W WO2007131482A1 WO 2007131482 A1 WO2007131482 A1 WO 2007131482A1 DE 2007000860 W DE2007000860 W DE 2007000860W WO 2007131482 A1 WO2007131482 A1 WO 2007131482A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
winding core
winding
deformation
pressure vessel
Prior art date
Application number
PCT/DE2007/000860
Other languages
German (de)
English (en)
Inventor
Manfred Kunert
Karl A. Zapf
Original Assignee
Paul & Co Gmbh & Co Kg
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 EP06010282A external-priority patent/EP1855097B1/fr
Application filed by Paul & Co Gmbh & Co Kg filed Critical Paul & Co Gmbh & Co Kg
Priority to DE112007001707T priority Critical patent/DE112007001707A5/de
Publication of WO2007131482A1 publication Critical patent/WO2007131482A1/fr

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
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
    • 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
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12—Pressure testing

Definitions

  • a receptacle for receiving a hub test specimen with a maximum outer diameter of 125 mm and a minimum inner diameter of 50 mm could be designed with a test specimen length of 250 mm and the second receptacle may be designed to receive a core test piece having a maximum outer diameter of 250 mm and a minimum inner diameter of 100 mm with a test piece length of 450 mm.
  • the modulus of elasticity of the specimen is included.
  • the modulus of elasticity of a plastic under pressure load is often unknown and sometimes deviates from the modulus of elasticity under uniaxial tension.
  • the modulus of elasticity is therefore not known in detail, in particular because it can be influenced by processing conditions (fiber orientation, melt flow).
  • plastics behave linearly elastic only in a small deformation range, as the formula requires. In many cases, the leaves Apply this area. In this respect, the stress-strain (or the force-deformation) curve of a specific test object would have to be determined in each case, and their values would have to be included in the formula.
  • the manner of increasing the surface applied relative external pressure is also basically arbitrary. It can be increased continuously, but also in discrete steps.
  • the pressure increase ends is basically arbitrary.
  • the pressure can be increased as long as no pressure drop has been detected in the interior of the pressure vessel and / or as long as the winding core is not damaged and / or as long as a defined pressure end value has not been reached.
  • Fig. 1 shows a peak pressure test according to the prior art on a winding core oil in cross section.
  • the winding core O l is disposed between the first plate 02 and the second plate 03.
  • the plates 02, 03 are each pressed in the direction of arrow on the winding core oil.
  • the pressure load is therefore at two nearly linear contact areas 04, 05.
  • the compressive load is not rotationally symmetrical and presses the winding core 01 therefore elliptical together. The greatest stress therefore takes place in the right and left area of the winding core 01.
  • the device 06 for stability testing of winding cores 01 is configured such that the right-hand region of the device 06 can be moved to the right via the carriage system 12. As a result, the winding core 01 is released and can be replaced.
  • the pressure vessel 08 opens thereby.
  • a winding core oil can be attached to the right and left receptacle 13 for testing. After attachment of the winding core oil to the receptacles 13, the right part of the device 06 is again moved to the left over the winding core oil. This also closes the pressure vessel 08 again.
  • the pressure vessel 08 is formed by the left and right movable part of the device and the outer region of the winding core oil.
  • the receptacles 13 can be exchangeable for accommodating the hubs in order to be able to ensure the reception of different hubs with different diameters. Replacing these shots 13 should be done by a skilled person in less than 300 seconds. A receptacle 13 should be able to compensate for an internal diameter tolerance of 2 mm and still be tight.
  • the device 06 may have a collecting trough, not shown here, under the device 06 for leaks. Furthermore, it should be ensured that leakages under test pressure do not generate a fluid jet on the operator.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

L'invention concerne un dispositif (06) et un procédé pour vérifier la stabilité de mandrins de bobinage (01), le dispositif présentant un réservoir sous pression (08) étanche à la pression, dans lequel (08) un agent peut être mis sous pression. Le dispositif (06) comprend une unité de mesure de pression (07) pour déterminer la pression interne du réservoir sous pression (08), au moins une partie du mandrin de bobinage (01) à vérifier pouvant être introduite dans le réservoir sous pression (08). Une certaine superficie de la zone externe du mandrin de bobinage (01) située dans le réservoir sous pression (08) peut être mise sous pression au moyen de l'agent de pression, par rapport à la partie interne du mandrin de bobinage (01). Le dispositif (06) comporte une unité de mesure de déformation (10) pour déterminer la déformation du mandrin de bobinage (01) à vérifier.
PCT/DE2007/000860 2006-05-12 2007-05-10 Dispositif et procédé pour vérifier la stabilité de mandrins de bobinage WO2007131482A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112007001707T DE112007001707A5 (de) 2006-05-12 2007-05-10 Vorrichtung und Verfahren zur Stabilitätsprüfung von Wickelkernen

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102006022725.5 2006-05-12
DE102006022725 2006-05-12
EP06010282.9 2006-05-18
EP06010282A EP1855097B1 (fr) 2006-05-12 2006-05-18 Dispositif et procédé destinés à la vérification de la stabilité de moyeux d'enroulement

Publications (1)

Publication Number Publication Date
WO2007131482A1 true WO2007131482A1 (fr) 2007-11-22

Family

ID=38441425

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/000860 WO2007131482A1 (fr) 2006-05-12 2007-05-10 Dispositif et procédé pour vérifier la stabilité de mandrins de bobinage

Country Status (1)

Country Link
WO (1) WO2007131482A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015201215A1 (de) * 2015-01-26 2016-07-28 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Prüfung von Kernen zur Herstellung faserverstärkter Hohlbauteile sowie Prüfvorrichtung zum Durchführen des Verfahrens

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754677A (en) * 1952-12-23 1956-07-17 John C New Nondestructive testing of thin shells by differential pressure
DE2027727A1 (de) * 1970-06-05 1972-01-20 Boenisch D Verfahren und Vorrichtung zum Messen der Druckfestigkeiten von ver formbaren Korpern
FR2641868A1 (fr) * 1989-01-16 1990-07-20 Elf Aquitaine Dispositif de mesure du comportement mecanique d'un echantillon de roche sous pression effective de confinement
EP0605109A1 (fr) * 1992-12-28 1994-07-06 Sonoco Products Company Dispositif et procédé de contrôle des éléments tubulaires

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754677A (en) * 1952-12-23 1956-07-17 John C New Nondestructive testing of thin shells by differential pressure
DE2027727A1 (de) * 1970-06-05 1972-01-20 Boenisch D Verfahren und Vorrichtung zum Messen der Druckfestigkeiten von ver formbaren Korpern
FR2641868A1 (fr) * 1989-01-16 1990-07-20 Elf Aquitaine Dispositif de mesure du comportement mecanique d'un echantillon de roche sous pression effective de confinement
EP0605109A1 (fr) * 1992-12-28 1994-07-06 Sonoco Products Company Dispositif et procédé de contrôle des éléments tubulaires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015201215A1 (de) * 2015-01-26 2016-07-28 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Prüfung von Kernen zur Herstellung faserverstärkter Hohlbauteile sowie Prüfvorrichtung zum Durchführen des Verfahrens

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