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Underwater piezoelectric transducers
The Journal of the Acoustical Society of America, 1979A piezoelectric transducer comprising a piezoelectric cylinder whose axis is coincident with the electrical axis and placed between two rigid pistons perpendicular to the axis and of greater diameter than that of the cylinder. The pistons carry electrodes on their external faces.
Philippe Henry Maurice Cluzel +1 more
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Lead-Free Piezoelectric Transducers
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency ControlResearch activities on lead-free piezoelectric materials have been ongoing for over 20 years. Generally, the applicability of the main material families is less universal than that of lead-based compositions such as lead zirconate titanate, but in some cases, the corresponding applications have already been identified. Due to the extensive research, it
Ringgaard, Erling +4 more
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Piezoelectric composite transducers
The Journal of the Acoustical Society of America, 1994Piezoelectric ceramic/polymer composites have found increasing use in high resolution medical ultrasound systems and advanced Navy underwater acoustic applications. Composite transducers offer design versatility and performance advantages over monolithic piezoelectric ceramic and monolithic piezoelectric polymer devices under both sensing and actuating
Leslie Bowen +3 more
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Flexure mode piezoelectric transducers
IEEE Transactions on Audio and Electroacoustics, 1971Although flexurally responsive piezoelectric elements have been utilized for a few decades, interest in their utility remains high. This is a result of the ability of such structures to generate high output from sources of low mechanical impedance, or, conversely, to develop large displacement at low levels of electrical excitation. Typically a bending
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Piezoelectric slotted ring transducer
The Journal of the Acoustical Society of America, 2013Analytical treatment of a slotted piezoelectric ceramic ring transducer vibrating in flexure is presented. The mode shape of the slotted ring vibration is determined, and parameters of the equivalent electromechanical circuit of the transducer are calculated.
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Piezoelectric transducer for piezoelectric loudspeaker
The Journal of the Acoustical Society of America, 1987A piezoelectric transducer for use in a piezoelectric loud speaker includes a metallic plate and a piezoelectric wafer fixed to at least one face of the metallic plate, a first end of the piezoelectric transducer being adapted to be clamped to the frame of the loud speaker and a second end being adapted to be connected to a cone diaphragm in the loud ...
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Piezoelectric audio transducer
The Journal of the Acoustical Society of America, 1983A piezoelectric audio transducer adapted to produce a sound output when a vibrator which is formed by bonding a piezoelectric element to a metallic diaphragm is electrified, wherein the audio transducer is formed by securely supporting the outer periphery of the vibrator on an acoustic casing, and a fixing part to be fixed to a mounting body is ...
Nobuyuki Saito, Hiroshi Saito
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Piezoelectric transducer drive
The Journal of the Acoustical Society of America, 1981A stack of piezoelectric discs for driving the diaphragm of a transducer such as a loudspeaker. The discs are arranged in pairs with the outer edges of each pair supported by engagement with an O-ring against their planar faces. The pairs are connected by studs fixed at the centers of the discs.
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Piezoelectric audio transducer
The Journal of the Acoustical Society of America, 1999A piezoelectric transducer (100) may be achieved by mounting a piezoelectric bender (101) within a housing (102). Maximum resonation may be obtained by mounting the piezoelectric bender (101) on a single post (103). The housing (102) is constructed to have essentially the same geometry as the piezoelectric bender (101) and is separated by a ...
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Piezoelectric transducer apparatus
The Journal of the Acoustical Society of America, 1985An electroacoustic loudspeaker apparatus is provided including a piezoelectric driver element, the opposed major surfaces of which are acoustically coupled into first and second resonant structures. The first resonant structure exhibits a resonant frequency less than the resonant frequency of the driver and the second resonant structure exhibits a ...
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