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Characterization of environmental and machinery induced vibration transmissivity

  • US 6,575,034 B2
  • Filed: 01/30/2001
  • Issued: 06/10/2003
  • Est. Priority Date: 01/30/2001
  • Status: Expired due to Fees
First Claim
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1. A method of identifying vibrations transmitted through ground soil between an environmental vibration site and a target site, comprising:

  • (a) simultaneously monitoring and capturing vibration accelerometer signals at said environmental vibration site and at said target site;

    (b) extracting amplitude and frequency data from the frequency representations of the domains of said signals;

    (c) quantifying displacement excitations from said data; and

    (d) providing transmissivity ratios by summing said displacement excitations at different frequencies at said environmental vibration site to produce a first sum and at said target site to produce a second sum and ratioing the first sum and the second sum, thereby indicating the relative vibrational stiffness between said environmental vibration site and said target site.

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