Design Alterations of a High Power Air Transducer

• For certain resonant high-power air transducers exists a radiating cone which is in some way connected to a forcing piezoelectric ceramic. This study focuses purely on the cone structure itself, and the form of excitation that gives desired results on the vibration modes of the cone. In the new design three different parameters are changed from existing devices. They are: 1) the change of the round piezoelectric disc center position to a piezoelectric ring shape, while making the cone center fixed, 2) the cutting of the cone into leaves, and 3) the radial thickness decreasing with radius. In simulations, the new design yields considerably higher vibration amplitudes.

• En högamplitudsändare för luft har utvecklats. Jämfört med existerande sändare har tre designändringar gjorts som innebär en väsentligt ökad vibrationsamplitud, och därmed ett större ljudtryck.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Teknisk mekanik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Applied Mechanics (hsv//eng)

Nyckelord

Ultrasonic transducer

Vibration response

Air-coupled transducer

Acoustic air transducer

High power air transducer

Publikations- och innehållstyp

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