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Methods for forewarning of critical condition changes in monitoring civil structures

United States Patent

8,410,952
April 2, 2013
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
Sensor modules (12) including accelerometers (20) are placed on a physical structure (10) and tri-axial accelerometer data is converted to mechanical power (P) data (41) which then processed to provide a forewarning (57) of a critical event concerning the physical structure (10). The forewarning is based on a number of occurrences of a composite measure of dissimilarity (C.sub.i) exceeding a forewarning threshold over a defined sampling time; and a forewarning signal (58) is provided to a human observer through a visual, audible or tangible signal. A forewarning of a structural failure can also be provided based on a number of occurrences of (C.sub.i) above a failure value threshold.
Abercrombie; Robert K. (Knoxville, TN), Hively; Lee M. (Philadelphia, TN)
UT-Battelle, LLC (Oak Ridge, TN)
12/ 962,787
20120146802
December 8, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with assistance under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The Government has certain rights in this invention.