Characterization of progressive damage in concrete using impact non-linear reverberation spectroscopy
Författare
Summary, in English
as concrete. Commonly, these methods evaluate relative nonlinearity parameters from multiple resonance tests at
different amplitudes. We demonstrate a recently developed alternative method, Impact Nonlinear Reverberation
Spectroscopy (INRS), where quantitative nonlinearity parameters are evaluated from a single impact resonance
test. The recorded reverberation of the measured signal is matched to a synthetic nonlinear damped signal. The
proposed model allows instantaneous true physical amplitude, frequency, and damping of each mode to be
characterized as a function of time, allowing for quantitative information of the nonlinear parameters. The
hysteretic material nonlinearity can be quantitatively characterized over a notably wider dynamic range compared
to conventional methods. Two examples from the application to concrete and stabilized soil are presented.
Avdelning/ar
- Teknisk geologi
- Matematisk statistik
- Statistical Signal Processing Group
- Spatio-Temporal Stochastic Modelling Group
- Biomedical Modelling and Computation
Publiceringsår
2015
Språk
Engelska
Publikation/Tidskrift/Serie
International Symposium Non-Destructive Testing in Civil Engineering (NDT-CE 2015), Proceedings of
Länkar
Dokumenttyp
Konferensbidrag
Ämne
- Signal Processing
Nyckelord
- Impact resonance test
- Nonlinear
- Reverberation spectroscopy
Conference name
International Symposium Non-Destructive Testing in Civil Engineering (NDT-CE 2015)
Conference date
2015-09-15 - 2015-09-17
Status
Published
Forskningsgrupp
- Statistical Signal Processing Group
- Spatio-Temporal Stochastic Modelling Group
- Biomedical Modelling and Computation