The placement and number of sensors is a crucial issue in experimental modal analysis. This is particularly true when large structures such as civil structures are under investigation, resulting in difficult and uncomfortable experimental set-up, large number of sensors, long cables and expensive equipment for data acquisition. In this work we present a methodology for time–space superposition of data acquired during dynamical tests of large structures. The technique allows the correlation of measurements collected at different times and in different spatial configurations, requiring that only one single acquisition point is kept spatially fixed. This makes possible to perform modal testing using undersized equipment and to include new test-data collected at different times and spatial distributions at a later stage. A case study, concerning experimental tests performed on an ancient building, is shown. The results have been validated experimentally and numerically using finite element analysis.

COUPLED IMPEDANCE FOR POWER TRANSMISSION CHARACTERISATION IN MULTI-POINT-CONNECTED STRUCTURES / Raffella Di, Sante; Manconi, Elisabetta; Vanali, Marcello. - (2015), pp. 1-9. ((Intervento presentato al convegno ICSV22, 22nd International Congress on Sound and Vibration ICSV22, Firenze, Italy tenutosi a Florence, Italy nel 12-16 Luglio 2015.

COUPLED IMPEDANCE FOR POWER TRANSMISSION CHARACTERISATION IN MULTI-POINT-CONNECTED STRUCTURES

MANCONI, Elisabetta;VANALI, Marcello
2015

Abstract

The placement and number of sensors is a crucial issue in experimental modal analysis. This is particularly true when large structures such as civil structures are under investigation, resulting in difficult and uncomfortable experimental set-up, large number of sensors, long cables and expensive equipment for data acquisition. In this work we present a methodology for time–space superposition of data acquired during dynamical tests of large structures. The technique allows the correlation of measurements collected at different times and in different spatial configurations, requiring that only one single acquisition point is kept spatially fixed. This makes possible to perform modal testing using undersized equipment and to include new test-data collected at different times and spatial distributions at a later stage. A case study, concerning experimental tests performed on an ancient building, is shown. The results have been validated experimentally and numerically using finite element analysis.
9788888942483
COUPLED IMPEDANCE FOR POWER TRANSMISSION CHARACTERISATION IN MULTI-POINT-CONNECTED STRUCTURES / Raffella Di, Sante; Manconi, Elisabetta; Vanali, Marcello. - (2015), pp. 1-9. ((Intervento presentato al convegno ICSV22, 22nd International Congress on Sound and Vibration ICSV22, Firenze, Italy tenutosi a Florence, Italy nel 12-16 Luglio 2015.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2797804
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 0
social impact