EP3234580A1 - Procédé de détermination non destructive de valeurs caractéristiques d'un matériau - Google Patents

Procédé de détermination non destructive de valeurs caractéristiques d'un matériau

Info

Publication number
EP3234580A1
EP3234580A1 EP15798419.6A EP15798419A EP3234580A1 EP 3234580 A1 EP3234580 A1 EP 3234580A1 EP 15798419 A EP15798419 A EP 15798419A EP 3234580 A1 EP3234580 A1 EP 3234580A1
Authority
EP
European Patent Office
Prior art keywords
cast
alloy
sample
crash
measurement
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
Application number
EP15798419.6A
Other languages
German (de)
English (en)
Inventor
Alexander AIGNER
Manuel Anasenzl
Franz-Josef Klinkenberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP3234580A1 publication Critical patent/EP3234580A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/204—Structure thereof, e.g. crystal structure
    • G01N33/2045—Defects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • 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
    • G01M5/0091—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by using electromagnetic excitation or detection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents

Definitions

  • the invention relates to a method for non-destructive determination of material characteristics of electrically conductive components by means of electromagnetic eddy current testing.
  • crash tests In the automotive industry, light metals are increasingly being used to save weight.
  • the structural components used in this case are regularly produced as aluminum castings. It is desirable to be able to easily and quickly assess these for their ductility / molding properties. So far, crash tests, bending angle tests, ductility testing by means of punch rivet tests and drop tower tests for test bodies have been used. All of these test methods have considerable disadvantages. Thus, the crash test is a destructive, extremely costly and time-consuming test method with often difficult statements and conclusions. The bending angle measurement is also destructive and does not allow a real examination of the material properties.
  • the eddy current test As a non-destructive testing method for determining mechanical material properties of electrically conductive materials, the eddy current test is known. Here, the effect is used that most impurities and damage in an electrically conductive material also have a different electrical conductivity or a different permeability than the actual material.
  • the object of the present invention is to replace the known destructive test methods in structural components made of cast iron.
  • the term sample does not only mean cast samples, but also finished cast components, in particular structural components for vehicle construction.
  • the development according to claim 3 increases the comparability of the measurement results.
  • the method according to the invention can be used particularly advantageously for structural components, such as side members in motor vehicles, of an AISiMg alloy.
  • Fig. 2 is a measurement display of a first alloy composition
  • Fig. 3 is a measurement display of a second alloy composition.
  • FIG. 1 shows a measurement display of a reference measurement on a measurement screen.
  • This cast sample is subjected to the eddy current test in a manner known per se, the measuring sensor used being a high-resolution measuring coil tuned to the cast-specific conductivity.
  • This measuring coil is moved with a variable distance, tilting back and forth over the casting sample, so that there is a changing magnetic field.
  • the measured values generated in this way are clustered piles of dots which, as shown in FIG. 1, form a straight line 1 rising from left to right. This forms the reference straight line for the subsequent measurements.
  • the gain of the measured values of the reference straight line 1 is set so that the straight line passes through the center 2 of the crosshairs of the display in FIG.
  • Point clusters are again generated which form a straight line 3 and 4 in FIG. 2.
  • it is a heat-treated alloy consisting of 0.2% by weight AISM OMnMg, with the cast sample on the basis of the measuring line 3 having a lower test temperature than that of the measuring line 4.
  • the casting sample producing the measuring line 3 had the same test temperature as the reference sample. from that It can be seen that the cast sample from this AISil OMn alloy with 0.2 wt.% Mg has a better crash behavior than the reference sample.
  • the result is the measuring straight line 4. From this, one could conclude that the ductility in the event of a crash has deteriorated compared with the sample generating the straight line 3, but this is actually due solely to the different test temperature of one and the same cast sample.
  • FIG. 3 two more measuring lines 5 and 6 are shown. These are one cast sample each of a heat treated AISM OMn alloy containing 0.4 wt% Mg, with the casting sample that gave the measurement line 5 the same test temperature as the reference sample and the casting sample assigned to measurement line 3. From this it can be seen that the casting sample according to the measuring line 5 shows almost the same crash behavior as the reference sample, but a deteriorated behavior compared to the cast sample of the AISiMg alloy with 0.2 wt .-% Mg.
  • An increased test temperature corresponding to the measuring line 6 does not change the material result, but rather the temperature-dependent measurement result in the direction of a deteriorated crash behavior.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electromagnetism (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

Selon l'invention, pour déterminer rapidement et de manière peu onéreuse le comportement lors d'essais de choc de pièces structurales de fonderie constituées d'un alliage AlSi10MnMg, un contrôle par courants de Foucault est effectué à l'aide d'une bobine de mesure à haute résolution accordée sur la conductivité spécifique de la fonte.
EP15798419.6A 2014-12-18 2015-11-23 Procédé de détermination non destructive de valeurs caractéristiques d'un matériau Ceased EP3234580A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014226389.1A DE102014226389A1 (de) 2014-12-18 2014-12-18 Verfahren zum zerstörungsfreien Ermitteln von Werkstoffkennwerten
PCT/EP2015/077357 WO2016096325A1 (fr) 2014-12-18 2015-11-23 Procédé de détermination non destructive de valeurs caractéristiques d'un matériau

Publications (1)

Publication Number Publication Date
EP3234580A1 true EP3234580A1 (fr) 2017-10-25

Family

ID=54697573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15798419.6A Ceased EP3234580A1 (fr) 2014-12-18 2015-11-23 Procédé de détermination non destructive de valeurs caractéristiques d'un matériau

Country Status (5)

Country Link
US (1) US10458950B2 (fr)
EP (1) EP3234580A1 (fr)
CN (1) CN106796199B (fr)
DE (1) DE102014226389A1 (fr)
WO (1) WO2016096325A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114487337B (zh) * 2022-01-26 2022-12-09 小米汽车科技有限公司 用于验证压铸工艺性的试样件和压铸材料的试验方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0833150A2 (fr) * 1996-09-27 1998-04-01 Wilfried Dr.-Ing. Reimche Méthode et appareil pour la mesure des caractéristiques de matériaux semi-fini et des pièces des machines
EP2128276A1 (fr) * 2008-05-21 2009-12-02 BDW technologies GmbH Connecteur de soupape pour tuyaux médicaux
DE102009009027A1 (de) * 2009-02-16 2010-08-19 Audi Ag Verfahren und Vorrichtung zum Bestimmen einer Materialeigenschaft eines elektrisch leitfähigen Bauteils

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1032505C (zh) * 1993-11-22 1996-08-07 冶金工业部钢铁研究总院 高温连铸坯表面缺陷涡流检测装置
US6087830A (en) * 1994-07-07 2000-07-11 Hydroscope Canada Inc. Flexible device for remote field eddy current inspection of ferrous pipeline containing turns
US20040004475A1 (en) * 2002-04-22 2004-01-08 Jentek Sensors, Inc. High throughput absolute flaw imaging
US6978861B2 (en) * 2002-06-26 2005-12-27 A Wen Yu Connection of sound bowl of loudspeaker
DE102006002621A1 (de) * 2006-01-19 2007-07-26 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zur zerstörungsfreien Prüfung der Zylinderlauffläche eines Kurbelgehäuses
DE102009019269A1 (de) * 2009-04-28 2010-11-11 Audi Ag Aluminium-Silizium-Druckgusslegierung für dünnwändige Strukturbauteile
EP2471966B1 (fr) * 2010-12-17 2014-09-03 TRIMET Aluminium SE Alliage AISi ductile pouvant facilement être moulé et procédé de fabrication d'une pièce moulée en utilisant l'alliage de moulage AISi

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0833150A2 (fr) * 1996-09-27 1998-04-01 Wilfried Dr.-Ing. Reimche Méthode et appareil pour la mesure des caractéristiques de matériaux semi-fini et des pièces des machines
EP2128276A1 (fr) * 2008-05-21 2009-12-02 BDW technologies GmbH Connecteur de soupape pour tuyaux médicaux
DE102009009027A1 (de) * 2009-02-16 2010-08-19 Audi Ag Verfahren und Vorrichtung zum Bestimmen einer Materialeigenschaft eines elektrisch leitfähigen Bauteils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016096325A1 *

Also Published As

Publication number Publication date
CN106796199B (zh) 2020-07-14
US10458950B2 (en) 2019-10-29
WO2016096325A1 (fr) 2016-06-23
US20170284967A1 (en) 2017-10-05
DE102014226389A1 (de) 2016-06-23
CN106796199A (zh) 2017-05-31

Similar Documents

Publication Publication Date Title
DE102008002484A1 (de) Verfahren zum Prüfen eines Schwingungsdämpfers eines Kraftfahrzeugs im eingebauten Zustand sowie Schwingungsdämpfer-Prüfsystem für ein Kraftfahrzeug
DE102013204694B4 (de) Verfahren zum Ermitteln eines Wiederherstellungszustands einer Metalllegierung
DE102010052814B4 (de) Vorrichtung und Verfahren zur Vermeidung von Instabilitäten belasteter Strukturen
EP3234580A1 (fr) Procédé de détermination non destructive de valeurs caractéristiques d'un matériau
EP2647989B1 (fr) Procédé de détermination quantitative non destructive de la microcontrainte résiduelle de type II et/ou III.
DE102007001464A1 (de) Verfahren zur Bestimmung der Restlebensdauer und/oder des Ermüdungszustandes von Bauteilen
DE102009009027A1 (de) Verfahren und Vorrichtung zum Bestimmen einer Materialeigenschaft eines elektrisch leitfähigen Bauteils
DE10002344B4 (de) Auf Ultraschallfehlererfassung basierendes Verfahren zum Bestimmen des Reinheitsgrades von Metallmaterialien
DE102009004607A1 (de) Verfahren zur Analyse von Windgeräuschen an einem Fahrzeug
DE3825541C2 (de) Verfahren zur Bewertung der Reststandzeit von wärmebeständigem Stahl
EP3535560B1 (fr) Procédé de test
DE102019205770A1 (de) Verfahren zur Ermittlung und/oder Bewertung von Werkstoffeigenschaften an metallischen Proben von Rohren
WO2020074417A1 (fr) Procédé de détermination de la valence de valeurs de mesure radar pour déterminer un état d'occupation d'un emplacement de stationnement
DE102014222386A1 (de) Diagnose- und Prüfungsverfahren von Krafteinleitungspunkten an Faserverbundbauteilen
DE102016208597A1 (de) Zerstörungsfreies Verfahren zur Bestimmung der Faserorientierung von elektrisch leitenden Wirrfasermaterialien
DE102015011193A1 (de) Prüfstand für Faserhalbzeuge
Schnitzer et al. Mikrostrukturelle Charakterisierung von PH 13-8 Mo Maraging-Stählen
DE504657C (de) Verfahren zum Messen schneller periodischer mechanischer Schwingungen
DE102014222497A1 (de) Verfahren und Vorrichtung zur bildlichen Darstellung des Makrogefüges eines metallurgischen Produktes mittels Ultraschall
EP2743866B1 (fr) Procédé de détermination du comportement d'usure d'un matériau
DE102006051573B4 (de) Einrichtung zur Überprüfung von durch Anodisierung, insbesondere durch TSA-Anodisierung beschichteten Leichtmetallteilen, insbesondere Aluminiumbauteilen
DE102016225532A1 (de) Vorrichtung und Verfahren zur Prüfung des Umformvermögens von Proben aus plastisch umformbaren Werkstoffen
Christ et al. Prediction of Size and Position of Fracture Relevant Defects of Samples Fatigued in the VHCF Area on the Basis of Metallographic Examinations: Dedicated to Prof. Günter Petzow on the occasion of his 90th birthday
Kral et al. Implications of EBSD-based Grain Size Measurement on Structure-Property Correlations
DE102021107330A1 (de) Beschichtetes Stahlflachprodukt und Verfahren zu seiner Herstellung

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20170503

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210730

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230503

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20240307