A NEW METHOD OF DETECTING FATIGUE CRACK PROPAGATION IN FERROMAGNETIC SPECIMENS

This paper describes a new method for detecting fatigue crack growth in ferromagnetic specimens. This method is similar to the Barkhausen effect type of measurement, where discontinuous voltage pulses are induced in a pickup coil surrounding a specimen when the specimen is magnetized slowly. As a fatigue crack grows, similar voltage pulses are generated. Simultaneous display of the Bakhausen-type magnetic signals and the acoustic emission signals during fatigue crack propagation show that they are correlected. /Author/

  • Corporate Authors:

    American Society for Testing and Materials

    100 Barr Harbor Drive, P.O. Box C700
    West Conshohocken, PA  United States  19428-2957
  • Authors:
    • Bhattacharya, S
    • Schroeder, K
  • Publication Date: 1975-7

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Filing Info

  • Accession Number: 00126141
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM