Abstract
The vibro-acoustic modulation method is applied to a composite skin-stiffener structure to investigate the possibilities to utilise this method for damage identification in terms of detection, localisation and damage quantification. The research comprises a theoretical part and an experimental part. An impact load is applied to the skin-stiffener structure, resulting in a delamination underneath the stiffener. The structure is interrogated with a low frequency pump excitation and a high frequency carrier excitation. The analysis of the response in a frequency band around the carrier frequency is employed to assess the damage identification capabilities and to gain a better understanding of the modulations occurring and the underlying physical phenomena. Though vibro-acoustic is shown to be a sensitive method for damage identification, the complexity of the damage, combined with a high modal density, complicate the understanding of the relation between the physical phenomena and the modulations occurring.
Original language | English |
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Title of host publication | 7th European Workshop on Structural Health Monitoring |
Editors | V. Le Cam, L. Mevel, F. Schoefs |
Place of Publication | Nantes (F) |
Pages | 544-551 |
Publication status | Published - 8 Jul 2014 |
Event | 7th European Workshop on Structural Health Monitoring, EWSHM 2014 - Nantes, France Duration: 8 Jul 2014 → 11 Aug 2014 Conference number: 7 |
Conference
Conference | 7th European Workshop on Structural Health Monitoring, EWSHM 2014 |
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Abbreviated title | EWSHM |
Country/Territory | France |
City | Nantes |
Period | 8/07/14 → 11/08/14 |
Keywords
- METIS-304224
- IR-91387