링형 압전 변환기의 면내 진동 특성In-plane Vibration Characteristics of Piezoelectric Ring Transducers
- Other Titles
- In-plane Vibration Characteristics of Piezoelectric Ring Transducers
- Authors
- 박춘광; 김진오
- Issue Date
- Oct-2014
- Publisher
- 한국소음진동공학회
- Keywords
- Piezoelectric Transducer(압전 변환기); In-plane Vibration(면내 진동); Impedance Curve(임피던스 곡선); Resonance(공진); Mode Shape(모드형상); Piezoelectric Transducer; In-plane Vibration; Impedance Curve; Resonance; Mode Shape
- Citation
- 한국소음진동공학회논문집, v.24, no.10, pp.780 - 787
- Journal Title
- 한국소음진동공학회논문집
- Volume
- 24
- Number
- 10
- Start Page
- 780
- End Page
- 787
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/10807
- DOI
- 10.5050/KSNVE.2014.24.10.780
- ISSN
- 1598-2785
- Abstract
- This paper experimentally deals with the vibration characteristics of flat ring transducers used for ultrasonic sensors and actuators. Radial vibration mode, which is the fundamental mode of a thin piezoelectric transducer, was measured by a laser in-plane vibrometer. An impedance analyzer was used to measure natural frequencies. The results measured by experiments verified theoretical predictions. The vibration characteristics of ring transducers were identified according to the outer diameter size. The shape of the fundamental mode is almost uniform but slightly decreases from the inner to the outer circumferential surfaces. The natural frequency of the fundamental mode decreases as the outer diameter increases. It appears that the ring type transducer is suitable to excite uniformly distributed vibration on a flat surface.
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