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Measurements of wave propagation characteristics of sandwich structures damped by viscoelastic core materials
- Park, Junhong;
- Parc, Jeongwon;
- Lee, Jepil;
- Park, Buhm;
- Yoo, Seungyeop;
- 외 1명
Citations
SCOPUS
0초록
Experimental methods to measure frequency-dependent dynamic properties of sandwich structures are proposed. Flexural wave propagations are analyzed using the compressional beam theory. Using the assumed wave functions, the wavenumbers are measured through the transfer function method requiring small number of vibration measurements. Different types of core materials such as lightweight foam and rubber material were used in the experiments and their capabilities in reducing the vibration and consequently sound radiation was investigated. Using the proposed method, the mechanism of vibration damping of the core is analyzed.
키워드
Dynamic property; Sandwich structure; Transfer function method; Wavenumber; Beam theories; Compressional; Core material; Dynamic property; Experimental methods; Frequency-dependent; Rubber material; Sound radiations; Transfer function method; Vibration-damping; Viscoelastic cores; Wave numbers; Wave propagation characteristics; Acoustic wave propagation; Coremaking; Transfer functions; Sandwich structures
- 제목
- Measurements of wave propagation characteristics of sandwich structures damped by viscoelastic core materials
- 저자
- Park, Junhong; Parc, Jeongwon; Lee, Jepil; Park, Buhm; Yoo, Seungyeop; Jeon, Jin Yong
- 발행일
- 2010-06
- 유형
- Conference Paper
- 저널명
- 39th International Congress on Noise Control Engineering 2010, INTER-NOISE 2010
- 권
- 2
- 페이지
- 1171 ~ 1175