Τίτλος:
Modelling acoustic and electric signals emitted during structural tests in terms of log-periodic power-law models
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
An alternative way to represent data regarding internal damage processes, specifically the data provided by the acoustic emission (AE) technique and the pressure stimulated currents (PSCs), is attempted in this study, in terms of log-periodic power-law models. Both monitoring techniques have been already successfully considered widely, either independently or in juxtaposition to each other, in case of standardized laboratory experiments with specimens of relatively simple geometry and moderate dimensions made of a single material. The innovation of the present study is that the AE and PSC data modelled were recorded during structural tests with specimens of complicated geometry made of three different materials, ie, marble, cement paste/mortar, and titanium. It was clearly concluded that both AE and PSC data can be quite successfully modelled in terms of log-periodic power-law models. Moreover, it was indicated that in case of complex experimental set-ups, log-periodic power-law models approach experimental data according to a more accurately manner than pure power-law models do, thus opening up new possibilities of studying the internal damage processes and detecting perhaps useful pre-failure indicators. © 2020 John Wiley & Sons, Ltd.
Συγγραφείς:
Mastrogiannis, D.
Andreopoulos, S.I.
Potirakis, S.M.
Stavrakas, I.
Triantis, D.
Pasiou, E.D.
Περιοδικό:
Material Design and Processing Communications
Εκδότης:
John Wiley and Sons Inc
Λέξεις-κλειδιά:
Damage detection, Acoustic emission techniques; Complicated geometry; Laboratory experiments; Log-periodic power law; Monitoring techniques; Pressure stimulated currents; Simple geometries; Structural tests, Acoustic emission testing
