Circular sensing networks for guided waves based structural health monitoring
P.H. Malinowski , Wiesław Ostachowicz , T. Wandowski
AbstractIn this paper, results of damage localization performed for four sensing network configurations are compared. Process of damage localization is based on guided waves propagation phenomenon. Guided waves are excited using piezoelectric transducer and received by scanning laser vibrometer. Different excitation frequencies are also investigated. In experimental investigations two types of piezoelectric transducers are used as guided waves exciters. Frequency–magnitude characteristics of symmetric and antisymmetric modes are created for both types of transducers. These characteristics allow a choice of an excitation frequency for efficient generation of selected wave mode. The amplitude of second mode in this case has negligibly small value. Finally, sensing networks in the form of circle with three different diameters are realized based on piezoelectric transducers. Damage localization algorithm is prepared in MATLAB® environment as well as in C++.
|Journal series||Mechanical Systems and Signal Processing, ISSN 0888-3270|
|Publication size in sheets||0.95|
|Keywords in English||Guided waves; Structural health monitoring; Damage localisation; Laser vibrometry; Piezoelectric transducers|
|Score|| = 45.0, 29-11-2017, ArticleFromJournal|
= 45.0, 29-11-2017, ArticleFromJournal
|Publication indicators||: 2016 = 4.116 (2) - 2016=4.874 (5)|
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