Damage assessment with nonlinear vibro-acoustic modulation technique

Dimitri Donskoy, Andrei Zagrai, Alexander Chudnovsky, Eduard Golovin, Vinod Agarwala

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

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. There is an increasing need for technologies that could allow for monitoring material degradation at the micro/meso scale before the onset of the macro-scale fracture. In this contribution, we report results of the real-time monitoring of the material micro/meso scale degradation using the nonlinear acoustic vibro-modulation technique. 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). The correlation of Dl measured for hundreds of test coupons with material degradation was confirmed using traditional ultrasonic and SEM examinations.

Original languageEnglish
Title of host publication2007 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC2007
Pages1949-1956
Number of pages8
DOIs
StatePublished - 2008
Event21st Biennial Conference on Mechanical Vibration and Noise, presented at - 2007 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2007 - Las Vegas, NV, United States
Duration: 4 Sep 20077 Sep 2007

Publication series

Name2007 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC2007
Volume1 PART C

Conference

Conference21st Biennial Conference on Mechanical Vibration and Noise, presented at - 2007 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2007
Country/TerritoryUnited States
CityLas Vegas, NV
Period4/09/077/09/07

Fingerprint

Dive into the research topics of 'Damage assessment with nonlinear vibro-acoustic modulation technique'. Together they form a unique fingerprint.

Cite this