Hostname: page-component-745bb68f8f-v2bm5 Total loading time: 0 Render date: 2025-02-04T15:03:59.020Z Has data issue: false hasContentIssue false
  • English
  • Français

Practical Optical Characterization Of Fretted Surfaces

Published online by Cambridge University Press:  10 February 2011

S. C. Gustafson ,
J. R. Mehta  and
G. N. Frantziskonis
S. C. Gustafson
Affiliation:
University of Dayton, Dayton, OH.
J. R. Mehta
Affiliation:
University of Arizona, Tucson, AZ.
G. N. Frantziskonis
Affiliation:
Visiting Scientists at the Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, when this work was performed.
Get access

Abstract

Nominally smooth surfaces subjected to repeated contact may develop characteristic fretted textures. An important example concerns fretted surfaces that may develop on disk dovetail joints that secure fan blades in turbine engines. These surfaces may form sites for crack nucleation and subsequent catastrophic disk and engine failure. Thus a practical and reliable method for the nondestructive evaluation of such fretted surfaces is critically needed. In this paper straightforward optical techniques are considered for identifying and quantifying fretted (and other surface damaged) regions. For example, digital images of candidate surfaces may be processed to separate fretted from unfretted regions and to evaluate the relative degree of fretting. Ideally, optical characterization should be rapid, convenient, inexpensive, reliable, and insensitive to details of lighting and image capture.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 503: Symposium JJ – Nondestructive Characterization of Materials in Aging Systems , 1997 , 25
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Szolwinski, M.P., Harish, G., McVeigh, P.A., and Farris, T.N., “The Role of Fretting Crack Nucleation in the Onset of Widespread Fatigue Damage: Analysis and Experiments”, Proc. FAA-NASA Symp. on Continued Airworthiness of Aircraft Structures, Atlanta, GA, 28–30 August 1996.Google Scholar
2. Gustafson, S.C., Mehta, J.R., and Frantziskonis, G.N., “Optical Nondestructive Evaluation of Fretting in Titanium Turbine Engine Fan Disks”, Fifth Tri-Service Titanium Contracts Review, Wright-Patterson AFB, OH, 7–9 October 1997.Google Scholar
3. Tiziani, H.J., “Optical Metrology of Engineering Surfaces-Scope and Trends” in Optical Measurement Techniques and Applications, P.K., Rastogi, ed., Artech House, 1997.Google Scholar
4. Duda, R.O. and Hart, P. E., Pattern Classification and Scene Analysis, Wiley, 1973.Google Scholar