A technique for detecting and locating structural damages is presented in this paper. It is based on the analysis of experimentally evaluated Frequency Response Functions (FRFs) and consists of a comparison of the FRFs of the healthy structure which are assumed as reference and the FRFs collected at different times. A Damage Detection Index (DDI) interprets the differences between the FRFs. The results obtained by this technique when tested on a partial frame of a commercial aircraft were very interesting. It was possible to detect and locate all damages which were simulated/induced and also gave an indication of the extent of the damage. Moreover, the technique has the basic features required of a new NDE technique such as being non-model related and having the possibility of performing real-time monitoring
Damage identification and location on a typical aeronautical structure / Napolitano, L; Fedele, P; Viscardi, Massimo; Lecce, Leonardo. - STAMPA. - 3397(1998), pp. 100-106.
Damage identification and location on a typical aeronautical structure
VISCARDI, MASSIMO;LECCE, LEONARDO
1998
Abstract
A technique for detecting and locating structural damages is presented in this paper. It is based on the analysis of experimentally evaluated Frequency Response Functions (FRFs) and consists of a comparison of the FRFs of the healthy structure which are assumed as reference and the FRFs collected at different times. A Damage Detection Index (DDI) interprets the differences between the FRFs. The results obtained by this technique when tested on a partial frame of a commercial aircraft were very interesting. It was possible to detect and locate all damages which were simulated/induced and also gave an indication of the extent of the damage. Moreover, the technique has the basic features required of a new NDE technique such as being non-model related and having the possibility of performing real-time monitoringI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.