title: Efficiency of some voice coil transducers in low frequency reciprocal operations.
abstract: The feasibility of using different voice coil transducers in applications with reciprocal transducers of mechanical waves is investigated. It was speculated that voice coil transducers could be a more efficient alternative to piezoelectric transducers in low frequency ranges. Five different voice coil transducers, originally constructed for either transmission or reception, were characterized in both modes of operation. A piezoelectric ceramic disk was used for comparison between the transducer types. The results show that voice coils indeed can function as reciprocal transducers and that the most sensitive of the evaluated transducers is more efficient than the piezoelectric disk for low frequencies.
authors.affiliation: Department of Engineering Geology, Faculty of Engineering, Lund University, John Ericssons väg 1, SE-22100 Lund, Sweden patrik.frojd@tg.lth.se, peter.ulriksen@tg.lth.se.
authors.forename: Patrik
authors.initials: P
authors.lastname: Fröjd
authors.affiliation: Department of Engineering Geology, Faculty of Engineering, Lund University, John Ericssons väg 1, SE-22100 Lund, Sweden patrik.frojd@tg.lth.se, peter.ulriksen@tg.lth.se.
authors.forename: Peter
authors.initials: P
authors.lastname: Ulriksen