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Real-Time Monitoring of Acoustic Linear and Nonlinear Behavior of Titanium Alloys During Cyclic Loading

Published online by Cambridge University Press:  10 February 2011

J. Frouin ,
J. Maurer ,
S. Sathish ,
D. Eylon ,
J.K. Na  and
T.E. Matikas
J. Frouin
Affiliation:
Center for Materials Diagnostics, University of Dayton
J. Maurer
Affiliation:
Center for Materials Diagnostics, University of Dayton
S. Sathish
Affiliation:
Center for Materials Diagnostics, University of Dayton
D. Eylon
Affiliation:
Center for Materials Diagnostics, University of Dayton
J.K. Na
Affiliation:
102 Bugle Ct, Yorktown VA 23693
T.E. Matikas
Affiliation:
Former Director of the Center for Materials Diagnostics, University of Dayton
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Abstract

Variation in acoustic nonlinearity has been monitored in real time during fatigue, on four dogbone specimens of Ti-6A1-4V, under low cycle fatigue conditions, from the virgin state all the way to fracture. The results of these experiments show that the acoustic nonlinearity undergoes large changes during the fatigue and follows a similar trend for the material under given fatigue test conditions. Transmission electron microscopic (TEM) examination of the samples with similar composition fatigued to different stages indicates a gradual change in the microstructure and dislocation density, which correlates with the changes in acoustic nonlinearity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 591 , 1999 , 79
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

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