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  4. Analyse der Constraints dans les roues de chemin de fer par methode ultrasonore - Contribution an an concept de securite
 
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1995
Journal Article
Title

Analyse der Constraints dans les roues de chemin de fer par methode ultrasonore - Contribution an an concept de securite

Title Supplement
Kap.12.7
Abstract
In order to evaluate the stress states in rims of monoblock railroad wheels, automated ultrasonic set-ups (UER) have built. 19 of these set-ups are already underindustrial use; several thousands of wheels have been tested. The set-up takes advantage of an electromagentic ultrasonic transducer which generates the ultrasound in the material so that non coupling is needed. This transducer together with a set-up for the automated data acquisition and evaluation enables the determination of the principal stress difference along a radial trace with a spatial sampling distance of 1mm. The profile of the difference of the stresses along the circumferential (tan) and radial (rad) direction of the wheel along the height of the rim gives strong evidences concerning the stress state.
Author(s)
Schneider, E.
Herzer, H.-R.
Journal
Bulletin du cercle d'etudes des metaux  
Conference
Colloque International des Progres dans les Methodes d'Investigation des Metaux et des Nouveaux Materiaux 1995  
Language
French
Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP  
Keyword(s)
  • automated set-up

  • Eisenbahn

  • longitudinal wave

  • Longitudinalwelle

  • Qualitätsmanagement

  • quality management

  • railway wheel

  • Spannungsanalyse

  • Stress state

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