Acoustic monitoring of a structure
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United States of America Patent
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Issued Date -
Jul 22, 2004
app pub date -
Nov 18, 2003
filing date -
May 23, 2001
priority date (Note) -
Abandoned
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Abstract
Discloses a method for monitoring acoustic wave propagation in a structure using a limited number of acoustic sensors. The transfer function of the structure is measured between each sensor and selected locations remote from the sensor using a known source of acoustic waves, such as a Schmidt hammer. Signals from the acoustic sensors are captured when a trigger event is detected; the signals received at the sensors are either compensated by the measured transfer function to estimate the nature of the signal at source, or are compared to characteristics of a compensated reference signal.
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