An otoacoustic emission (OAE) is a sound that is generated from within the inner ear.Having been predicted by Austrian astrophysicist Thomas Gold in 1948, its existence was first demonstrated experimentally by British physicist David Kemp in 1978, and otoacoustic emissions have since been shown to arise through a number of different cellular and mechanical causes within the …

acoustic emission (plural acoustic emissions) (uncountable, engineering, acoustics) A phenomenon wherein external stimuli such as mechanical loading generate physical vibrations. (countable, engineering) A physical vibration caused by sudden movement within a material subjected to physical stress, often symptomatic of a defect.

アコースティック・エミッション（Acoustic Emission, AE）とは､材料が変形あるいは破壊する際に、内部に蓄えていた弾性エネルギーを音波（弾性波、AE波）として放出する現象である。 AE波は主に超音波領域(数10kHz～数MHz)の高い周波数成分を持つ。. このAE波を材料表面に設置したAEセンサ（圧電 ...

声发射（英語： Acoustic emission ） ：由于材料内部结构发生变化而引起材料内应力突然重新分布；使机械能转变为声能；产生弹性波，称为声发射 。 声发射的频率一般在1KHz-1MHz之间。 材料内部结构发生变化的原因有如下几种可能： 体内的裂缝开始长大；开裂；

Acoustic emission is the term given to the transient elastic mechanical waves that release energy suddenly within a material as a result of a stress condition. This energy release caused by the stress condition is due to the application of a load in the form of pressure, temperature, or due to physical or chemical changes affecting the internal ...

Acoustic emission (AE) is defined as ‘transient elastic stress waves produced by a release of energy from a localized source’ (Weng et al., 1982 ). An AE sensor composed of a thick piezoelectric element shown in Fig. 4.15a converts the mechanical energy caused by elastic waves into an electrical signal.

Journal of Acoustic Emission is published annually in CD-ROM by Acoustic Emission Group, PMB 409, 4924 Balboa Blvd, Encino, California 91316 (USA). It may also be reached at 2121H, Engr. V, University of California, Los Angeles, California 90095-1595 (USA). Tel. +1 (310) 825-5233.