Model
Digital Document
Publisher
Florida Atlantic University Digital Library
Description
A common problem surrounding piezoelectric transducers is matching the highimpedance
active piezoelectric element with a low-impedance load, typically water
or skin. This is a common problem with medical devices [Ali00]. Matching layers
are added in an attempt to gradually decrease the impedance of the active piezoelectric
element down to the impedance of water. If the impedance is not gradually
decreased, acoustic waves are reflected at the boundaries that are proportional to
the impedance mismatch of the two materials. A dual-matching layer transducer is
analyzed, and we attempt to optimize the impedances and thicknesses of the two
matching layers using statistical design of experiments.
active piezoelectric element with a low-impedance load, typically water
or skin. This is a common problem with medical devices [Ali00]. Matching layers
are added in an attempt to gradually decrease the impedance of the active piezoelectric
element down to the impedance of water. If the impedance is not gradually
decreased, acoustic waves are reflected at the boundaries that are proportional to
the impedance mismatch of the two materials. A dual-matching layer transducer is
analyzed, and we attempt to optimize the impedances and thicknesses of the two
matching layers using statistical design of experiments.
Member of