DE9106058U1 - Measuring arrangement, in particular for determining the residual wall thickness of corroded metal parts - Google Patents
Measuring arrangement, in particular for determining the residual wall thickness of corroded metal partsInfo
- Publication number
- DE9106058U1 DE9106058U1 DE9106058U DE9106058U DE9106058U1 DE 9106058 U1 DE9106058 U1 DE 9106058U1 DE 9106058 U DE9106058 U DE 9106058U DE 9106058 U DE9106058 U DE 9106058U DE 9106058 U1 DE9106058 U1 DE 9106058U1
- Authority
- DE
- Germany
- Prior art keywords
- measuring arrangement
- wall thickness
- metal parts
- determining
- corroded metal
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 title claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
- 1 - AG 03/91 Geb- 1 - AG 03/91 Geb
Rev. 1 BESCHREIBUNGRev. 1 DESCRIPTION
Meßanordnung, insbesondere zur Bestimmung der Restwandstärke korrodierter Metallteile.Measuring arrangement, in particular for determining the remaining wall thickness of corroded metal parts.
Stand der TechnikState of the art
Die Restwandstärke korrodierter Metallteile, z.B. an Gitterbrücken und -masten, wird im mobilen Einsatz mittels Ultraschall gemessen (mündliche Auskünfte der Bundesanstalt für Materialforschung und -prüfung; Fa. Krautkrämer, Bad Dürkheim; Fa. ABB- Leitungsbau, Hannover). Dazu muß die Korrossionsschicht auf einer Seite bis auf die intakte Restwand entfernt werden, da diese Schicht mit ihrer amorphen Struktur ansonsten die Ultraschallwellen zu stark streuen würde.The remaining wall thickness of corroded metal parts, e.g. on lattice bridges and masts, is measured in mobile use using ultrasound (oral information from the Federal Institute for Materials Research and Testing; Krautkrämer, Bad Dürkheim; ABB-Leitungsbau, Hanover). To do this, the corrosion layer on one side must be removed down to the intact remaining wall, since this layer with its amorphous structure would otherwise scatter the ultrasound waves too strongly.
Problemproblem
Der in Anspruch 1 bis 3 angegebenen Erfindung liegt das Problem zugrunde, eine Meßanordnung zu entwickeln, welche es ermöglicht, die Restwandstärke korrodierter Metallteile ohne die Entfernung der Korrossionsschichten zu bestimmen.The invention specified in claims 1 to 3 is based on the problem of developing a measuring arrangement which makes it possible to determine the remaining wall thickness of corroded metal parts without removing the corrosion layers.
Erfindunginvention
Dieses Problem wird mit einer Meßanordnung gem. Anspruch 1 bis 3 gelöst.This problem is solved with a measuring arrangement according to claims 1 to 3.
- 2 - AG 03/91 Geb- 2 - AG 03/91 Geb
Rev. 1 Vorteilhafte Wirkungen der ErfindungRev. 1 Advantageous effects of the invention
Mit der Erfindung wird erreicht, daß die Messung der Restwandstärke korrodierter Metallteile wesentlich beschleunigt wird. Darüberhinaus wird durch den Wegfall des Entfernens der Korrossionsschicht die Unfallgefahr für das Meßpersonal verringert.The invention makes it possible to significantly accelerate the measurement of the remaining wall thickness of corroded metal parts. Furthermore, the elimination of the need to remove the corrosion layer reduces the risk of accidents for the measuring personnel.
Darstellung der ErfindungDescription of the invention
Ein Ausführungsbeispiel der Erfindung wird im folgenden dargestellt:An embodiment of the invention is presented below:
An den beiden Meßschnäbeln eines Meßschiebers mit Datenausgang werden zwei Sensoren (z.B. magnetinduktive Sonden) angebracht.Two sensors (e.g. magnetic inductive probes) are attached to the two measuring jaws of a caliper with data output.
Der Datenausgang des Meßschiebers und die Datenausgänge der Meß Verstärker der Sonden werden an einen Datenlogger mit Meßdatenverarbeitung angeschlossen .The data output of the caliper and the data outputs of the measuring amplifiers of the probes are connected to a data logger with measurement data processing .
Die hier beschriebene Meßanordnung wird in gleicher Weise gehandhabt wie ein herkömmlicher Meßschieber, wobei Kontakte in den Sonden den Meßvorgang starten sobald die Sonden korrekt am Meßobjekt anliegen. In der Meßdatenverarbeitung wird der Wert für die Restwandstärke gebildet, indem vom Wert des Sensorabstandes die beiden Korrossionsschichtstärken subtrahiert und je nach Bedarf angezeigt oder im Datenlogger gespeichert werden.The measuring arrangement described here is handled in the same way as a conventional caliper, whereby contacts in the probes start the measuring process as soon as the probes are correctly positioned on the measuring object. In the measurement data processing, the value for the remaining wall thickness is calculated by subtracting the two corrosion layer thicknesses from the value of the sensor distance and displaying them as required or saving them in the data logger.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9106058U DE9106058U1 (en) | 1991-05-16 | 1991-05-16 | Measuring arrangement, in particular for determining the residual wall thickness of corroded metal parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9106058U DE9106058U1 (en) | 1991-05-16 | 1991-05-16 | Measuring arrangement, in particular for determining the residual wall thickness of corroded metal parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9106058U1 true DE9106058U1 (en) | 1991-09-12 |
Family
ID=6867380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE9106058U Expired - Lifetime DE9106058U1 (en) | 1991-05-16 | 1991-05-16 | Measuring arrangement, in particular for determining the residual wall thickness of corroded metal parts |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE9106058U1 (en) |
-
1991
- 1991-05-16 DE DE9106058U patent/DE9106058U1/en not_active Expired - Lifetime
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