title: Radiation efficiency of damped plates.
abstract: The radiation efficiency of damped plates is discussed in this letter. Below the critical frequency of a plate, numerical results show that the radiation efficiency is much influenced by damping. Some modifications of the classical formulas given by Cremer for an infinite plate and Leppington for a finite rectangular plate are proposed to include the influence of the damping on the radiation efficiency.
authors.affiliation: Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, 100190, Beijing, People's Republic of China.
authors.forename: Yiwei
authors.initials: Y
authors.lastname: Kou
authors.affiliation: Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, 100190, Beijing, People's Republic of China.
authors.forename: Bilong
authors.initials: B
authors.lastname: Liu
authors.affiliation: Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, 100190, Beijing, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Tian