Nondestructive Determination of Hardening Depths with Ultrasonic Surface Waves

  • J. Rivenez
  • A. Lambert
  • C. Flambard


Surface treatments are standard practice in mechanical engineering for producing metal parts subjected to operating stresses (such as fatigue, shocks, wear, abrasion...). Their penetration inside the materials varies from several hundreths of millimeters to several millimeters, depending on process implementation, but also on specific process-related features, such as:
  • the type of heating means used in surface hardening processes, i.e. induction, torch, electron bombardment, laser, etc.

  • the type of element that is diffused in case hardening to modify chemical composition of surface layers and provide them with superior resistance through thermo-chemical treatment, i.e. carbon, nitrogen, sulfur, boron, etc.


Residual Stress Surface Wave Rayleigh Wave Untreated Material Harden Depth 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    A. Lambert “Recherche théorique et expérimentale en vue du développement d’une méthode non-destructive de mesure de la variation de dureté dans les couches superficielles des métaux”. Rapport DGRST 72–7–0666 (1975).Google Scholar
  2. 2.
    A. Lambert, G. Bourse, M. Frémiot et al “Contribution des mesures de vitesse des ondes de Rayleigh par traitement numérique du signal à l’étude de l’état superficiel des métaux” 3rd European Conference on NDT (1984).Google Scholar
  3. 3.
    P.J. Noronha, J.R. Chapman and J.J. Wert “Residual Stress Measurement and analysis using ultrasonic testing” Journal of Testing and Evaluation, pp. 209–214.Google Scholar
  4. 4.
    D.R. Allen, W.H.B. Cooper “A Fourier transform technique that measures phase delays between ultrasonic impulses with sufficient accuracy to determine residual stresses in metals” NDT International, Vol. 16 No. 4, (1983).Google Scholar
  5. 5.
    D. Husson, S.D. Bennett and G.S. Kino “Measurements of stress with surface waves” Materials Evaluation, 43, pp. 92–100 (1985).Google Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • J. Rivenez
    • 1
  • A. Lambert
    • 1
  • C. Flambard
    • 1
  1. 1.Centre Technique des Industries MécaniquesSenlisFrance

Personalised recommendations