TY  - JOUR
AU  - Kouzoudis, Dimitris
AU  - Samourgkanidis, Georgios
AU  - Tapeinos, Christos I.
PY  - 2021
DA  - 2021/04/06
TI  - Contactless Detection of Natural Bending Frequencies using Embedded Metallic-Glass Ribbons inside Plastic Beams made of 3-D Printing
JO  - Recent Progress in Materials
SP  - 010
VL  - 03
IS  - 02
AB  - In the current work, 30 micron thin magnetoelastic ribbons made of metallic glass are embedded inside 6 mm thick PLA plastic cantilever beams made by 3-D printing, in order to detect the beams harmonics during bending excitation. This is possible because the   ribbons are of magnetoelastic nature and thus changes in their mechanical state induce a corresponding change in their magnetic state. The ribbons are placed at four different depths, starting with zero depth at the beam’s external surface all the away inside to the beam mid-plane. The technique is able to detect 7 harmonics and remarkably, these frequencies remain the same, within a marginal error of 1%, to all depths. The amplitude of the modes drops as the depth increases, but is still strong enough except at the mid-plane, to be used as a sensing signal. This is a proof of concept that the embedded ribbons provide useful information in a contactless fashion, about the mechanical health of a structure, as the harmonics spectrum is a unique signature of the structure’s state.
SN  - 2689-5846
UR  - https://doi.org/10.21926/rpm.2102010
DO  - 10.21926/rpm.2102010
ID  - Kouzoudis2021
ER  -