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Development of a scanning laser crack detection technique for corrosion fatigue testing of fine wire

Published online by Cambridge University Press:  03 March 2011

Paul A. Schmidt  and
James C. Earthman
Paul A. Schmidt
Affiliation:
Edwards CVS Division, Baxter Healthcare, 17221 Red Hill Avenue, Irvine, California 92714
James C. Earthman
Affiliation:
Department of Mechanical and Aerospace Engineering, University of California at Irvine, Irvine, California 92717
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Abstract

A scanning laser crack detection technique has been developed for use in corrosion fatigue testing of fine metallic wires. The technique has been integrated into a computerized data acquisition and control system allowing the unattended operation of extended fatigue tests. The system is capable of detecting cracks with surface lengths as small as 100 μm, with crack opening displacements as low as 1 μm. Detection schemes of light loss and light scattering have been successfully used to monitor crack initiation in air and in 0.9% sodium chloride solution. The present scanning laser system has been used for crack initiation detection in over 50 fatigue experiments and has the potential for use in crack growth monitoring. The method can provide information concerning other surface phenomena in addition to the study of cracks. The technique has potential applications beyond metallic wires, including fibers used in optics and ceramic reinforcement fibers used in structural composites.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 2 , February 1995 , pp. 372 - 380
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1ASTM E 466–82, “Standard Practice for Constant Amplitude Axial Fatigue Tests of Metallic Materials” (American Society for Testing and Materials, Philadelphia, PA, 1982).Google Scholar
2ASTM E 647–93, “Standard Test Method for Measurement of Fatigue Crack Growth Rates” (American Society for Testing and Materials, Philadelphia, PA, 1993).Google Scholar
3Krams, B. and Raymond, L., Report to Baxter Healthcare No. BXT 90295-2e, part 5 (1990), pp. 69–88.Google Scholar
4Vosikovsky, O., Canadian Metall. Quarterly 19, 87–97 (1980).CrossRefGoogle Scholar
5Bogar, F. D. and Crooker, T. W., NRL Report 8253, Naval Research Laboratory, Washington, DC, October 7 (1977).Google Scholar
6Shigley, J. E. and Mischke, C. R., Mechanical Engineering Design (McGraw-Hill, New York, 1989), pp. 65–70.Google Scholar
7Buerkle, J., Dunn-Rankin, D., Bowo, K., and Earthman, J. C., Materials Evaluation, June, 670–677 (1992).Google Scholar
8Buerkle, J., Dunn-Rankin, D., Bowo, K., and Earthman, J. C., in Proc. American Society of Nondestructive Testing Annual Conference, Oakland, CA, March 18–22 (1991), pp. 156–158.Google Scholar