Ultrasonic Linear and Nonlinear Behavior of Fatigued Ti–6Al–4V

The change in ultrasonic nonlinear property of a titanium alloy subjected to cyclic loading has been studied, with an objective to develop a new characterization methodology for quantifying the level of damage in the material undergoing fatigue. In order to determine the degree of nonlinearity, the...

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Published inJournal of materials research Vol. 14; no. 4; pp. 1295 - 1298
Main Authors Frouin, Jerome, Sathish, Shamachary, Matikas, Theodore E., Na, Jeong K.
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 01.04.1999
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Summary:The change in ultrasonic nonlinear property of a titanium alloy subjected to cyclic loading has been studied, with an objective to develop a new characterization methodology for quantifying the level of damage in the material undergoing fatigue. In order to determine the degree of nonlinearity, the ultrasonic second harmonic generation technique has been used. The second harmonic signal was monitored during the fatigue process, and a substantial increase in the second harmonic amplitude (180% increase in nonlinear factor) was observed. This indicates that the second harmonic signal is very sensitive to the microstructural changes in the material caused by fatigue.
Bibliography:ArticleID:04878
istex:6B0BDE575719B7809A088C86CA130D6D9F93BDF0
PII:S0884291400048780
ark:/67375/6GQ-KN940VX0-V
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.1999.0176