Damage localization using transient non-linear elastic wave spectroscopy on composite structures

G Zumpano, Michele Meo

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

To reduce the costs related to maintenance of aircraft structures, there is the need to develop new robust, accurate and reliable damage detection methods. A possible answer to this problem is offered by newly developed non-linear acoustic/ultrasonic techniques, which monitor the non-linear elastic wave propagation behaviour introduced by damage, to detect its presence and location. In this paper, a new transient non-linear elastic wave spectroscopy (TNEWS) is presented for the detection and localization of a scattered zone (damage) in a composite plate. The TNEWS analyses the uncorrelations between two structural dynamic responses generated by two different pulse excitation amplitudes by using a time-frequency coherence function. A numerical validation of the proposed method is presented. Damage was introduced and modelled using a multi-scale material constitutive model (Preisach-Mayergoyz space). The developed technique identified in a clear manner the faulted zone, showing its robustness to locate and characterize non-linear sources in composite materials
Original languageEnglish
Pages (from-to)217-230
Number of pages14
JournalInternational Journal of Non-Linear Mechanics
Volume43
Issue number3
DOIs
Publication statusPublished - Apr 2008
Event11th International Workshop on Nonlinear Elasticity in Materials - Sorrento, Italy
Duration: 1 Apr 2008 → …

Fingerprint Dive into the research topics of 'Damage localization using transient non-linear elastic wave spectroscopy on composite structures'. Together they form a unique fingerprint.

Cite this