acoustic emission

English

Noun

acoustic emission (plural acoustic emissions)

1. (uncountable, engineering, acoustics) A phenomenon wherein external stimuli such as mechanical loading generate physical vibrations.
2. (countable, engineering) A physical vibration caused by sudden movement within a material subjected to physical stress, often symptomatic of a defect.
   • 1990, Adrian A. Pollock, “Acoustic Emission Inspection”, in ASM Handbook‎^[1], 17th edition, →ISBN, page 287:

     Acoustic emissions are only generated when some abrupt and permanent change takes place somewhere in the material.

See also

• acoustic emission on Wikipedia.Wikipedia