Advertisement

A Sam Bearing Ball Inspection System

  • C-H. Chou
  • P. Parent
  • B. T. Khuri-Yakub
Chapter
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series

Abstract

Ceramic bearing balls have great potential for replacing steel bearing balls in most applications because of their lower weight, larger strength at high temperatures, and abundance of raw materials. However, ceramic materials are brittle, and the advantages of ceramic parts can be lost if small surface cracks and bulk defects are present in part. This work will report on a method we developed to detect small sub-micron surface cracks in ceramic bearing balls. We present a theory to calculate the scattering from these small “trenches” or cracks, and we will present an amplitude and phase measuring acoustic microscope capable of detecting these defects. We will present results of “line scans” across cracks in ceramics bearing balls where the balls are rolled under the stationary transducer.

Keywords

Phase Noise Acoustic Beam Acoustic Microscope Surface Depression Bulk Defect 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    P. C. D. Hobbs, “Heterodyne Interferometry with a Scanning Optical Microscope,” Chapter 6, Ph.D. Dissertation, Stanford University, Stanford, CA (August,1987).Google Scholar
  2. 2.
    G. S. Kino et al, “Confocal Microscopy of Trenches,” to be submitted to Applied Optics.Google Scholar
  3. 3.
    P. Parent, C-H. Chou, and B. T. Khuri-Yakub, “Ball Bearing Inspection with an Acoustic Microscope,” Proc. IEEE Ultrasonics Symposium (1988).Google Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • C-H. Chou
    • 1
  • P. Parent
    • 1
  • B. T. Khuri-Yakub
    • 1
  1. 1.Ginzton Laboratory, W. W. Hansen Laboratories of PhysicsStanford UniversityStanfordUSA

Personalised recommendations