TABLE I.
List of the ME material properties that can be experimentally controlled and optimized.
| Name | Notation | Descriptions | Values | Controlled factors |
|---|---|---|---|---|
| Interface coupling factor | k | Mechanical coupling of Metglas and PZT interface | 0.42–0.70 | - Interface adhesion |
| Mechanical quality factor | Q M | Strain amplification in ME receiver | 43.2–75.9 | - Interface adhesion - Clamping |
| Magnetostrictive material thickness | t m | Thickness of the Metglas | 25 (μm) | - Number of Metglas layers |
| Piezoelectric material thickness | t p | Thickness of the PZT | 127, 267 (μm) | - Thickness selection of PZT |
| Total thickness | t total | Thickness of ME receivers (tm + tp) | 152–317 (μm) | - Number of Metglas layers - Thickness selection of PZT |
| Thickness ratio | η | PZT thickness divided by total thickness (tp/ttotal) | 0.72–0.91 | - Number of Metglas layers - Thickness selection of PZT |