acoustic emission

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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, 17th edition, →ISBN, page 287:
      Acoustic emissions are only generated when some abrupt and permanent change takes place somewhere in the material.

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