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Vibro-Acoustic Modulation Based Damage Identification in a Composite Skin-Stiffener Structure
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.
Cited literature [19 references]
https://hal.inria.fr/hal-01020394
Contributor : Anne Jaigu <>
Submitted on : Tuesday, July 8, 2014 - 10:04:55 AM
Last modification on : Wednesday, October 18, 2017 - 9:54:29 AM
Long-term archiving on: : Wednesday, October 8, 2014 - 11:55:29 AM
Contributor : Anne Jaigu <>
Submitted on : Tuesday, July 8, 2014 - 10:04:55 AM
Last modification on : Wednesday, October 18, 2017 - 9:54:29 AM
Long-term archiving on: : Wednesday, October 8, 2014 - 11:55:29 AM
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