Proof-of-Concept Shear Wave Velocity Measurements Using an Unmanned Autonomous Aerial Vehicle

The feasibility of using an unmanned autonomous aerial vehicle (UAAV) for the performance of shear wave velocity measurements is investigated. Proof-of-concept tests using an UAAV developed at the University of Michigan were performed at two sites, and the results are presented. Tests were performed first at an indoor sand pit facility at the University of Michigan that was filled with Ottawa sand to a depth of 3.7 m (12 ft). A second test was performed outdoors, at a stiffer soil site near campus. The multichannel analysis of surface waves method (MASW) was implemented using an array of 16 geophones. Conventional testing was performed using a hammer as a source. Additional testing was performed using as a source a 0.18 kgr (0.4 lb) mass that was dropped by the UAAV from an elevation of approximately 3 m (9.5 ft). Comparison of the results is made on the basis of the measured dispersion curves and the interpreted shear wave velocity profiles. The results from the two techniques were very similar, indicating that this technology has promise as a site characterization tool. A wireless sensor was also placed adjacent to a wired sensor to evaluate the feasibility of using a wireless sensor network for the performance of these tests. It is shown that the signals of the two sensors were essentially identical.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 953-962
  • Monograph Title: Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability

Subject/Index Terms

Filing Info

  • Accession Number: 01522417
  • Record Type: Publication
  • ISBN: 9780784413272
  • Files: TRIS, ASCE
  • Created Date: Mar 25 2014 3:04PM