Micro-damage evaluation and remaining fatigue life assessment with nonlinear vibro-modulation technique

Dimitri Donskoy, Alexander Chudnovsky, Andrei Zagrai, Edward Golovin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Assessment of structural deterioration due to in-service and environmental loads is an essential element in ensuring safety, operability and long life of various structures and structural components. We applied vibro-acoustic modulation technique to monitor material degradation at the micro/meso scale before the onset of the macro-scale fracture. The technique explores nonlinear acoustic interaction of high frequency ultrasound and low frequency structural vibration at the site of the incipient damage. It is shown that micro/meso scale degradation increases the material nonlinearity leading to modulation of the high frequency ultrasonic signal by low frequency vibration, quantified by the nonlinear acoustic Damage Index (DI). Numerous tests with hundreds of test coupons proved high sensitivity of the developed technique to micro/meso scale fatigue damage accumulation. The study further demonstrated that the remaining life of the fatigued material can be predicted using phenomenological damage accumulation rule expressed through measured Damage Index.

Original languageEnglish (US)
Title of host publicationNonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics
Pages509-512
Number of pages4
DOIs
StatePublished - Aug 15 2008
Event18th International Symposium on Nonlinear Acoustics, ISNA18 - Stockholm, Sweden
Duration: Jul 7 2008Jul 10 2008

Publication series

NameAIP Conference Proceedings
Volume1022

Other

Other18th International Symposium on Nonlinear Acoustics, ISNA18
CountrySweden
CityStockholm
Period7/7/087/10/08

Fingerprint

fatigue life
damage
modulation
evaluation
acoustics
degradation
low frequencies
structural vibration
deterioration
safety
ultrasonics
nonlinearity
vibration
sensitivity
interactions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Donskoy, D., Chudnovsky, A., Zagrai, A., & Golovin, E. (2008). Micro-damage evaluation and remaining fatigue life assessment with nonlinear vibro-modulation technique. In Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics (pp. 509-512). (AIP Conference Proceedings; Vol. 1022). https://doi.org/10.1063/1.2956269
Donskoy, Dimitri ; Chudnovsky, Alexander ; Zagrai, Andrei ; Golovin, Edward. / Micro-damage evaluation and remaining fatigue life assessment with nonlinear vibro-modulation technique. Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. 2008. pp. 509-512 (AIP Conference Proceedings).
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Donskoy, D, Chudnovsky, A, Zagrai, A & Golovin, E 2008, Micro-damage evaluation and remaining fatigue life assessment with nonlinear vibro-modulation technique. in Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. AIP Conference Proceedings, vol. 1022, pp. 509-512, 18th International Symposium on Nonlinear Acoustics, ISNA18, Stockholm, Sweden, 7/7/08. https://doi.org/10.1063/1.2956269

Micro-damage evaluation and remaining fatigue life assessment with nonlinear vibro-modulation technique. / Donskoy, Dimitri; Chudnovsky, Alexander; Zagrai, Andrei; Golovin, Edward.

Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. 2008. p. 509-512 (AIP Conference Proceedings; Vol. 1022).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Donskoy D, Chudnovsky A, Zagrai A, Golovin E. Micro-damage evaluation and remaining fatigue life assessment with nonlinear vibro-modulation technique. In Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. 2008. p. 509-512. (AIP Conference Proceedings). https://doi.org/10.1063/1.2956269