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A NEES Geotechnical Centrifuge Facility at Davis

A NEES Geotechnical Centrifuge Facility at Davis. http://cgm.engr.ucdavis.edu/NEES/nees.html. Components of project. Speed upgrade - to 80 g Advanced Instrumentation - subcontracts to develop 8-channel sensor managers and to investigate feasibility of wireless communication underground.

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A NEES Geotechnical Centrifuge Facility at Davis

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  1. A NEES Geotechnical Centrifuge Facility at Davis http://cgm.engr.ucdavis.edu/NEES/nees.html UC Davis

  2. Components of project • Speed upgrade - to 80 g • Advanced Instrumentation - subcontracts to develop 8-channel sensor managers and to investigate feasibility of wireless communication underground. • Robot - in flight testing, construction and inspection • New building - 4200 ft2 of new space • Shaker upgrades - biaxial shaker • Geophysical testing • Display wall/numerical simulation UC Davis

  3. UCD NEES Advisory Board • Tarek Abdoun, Abbas Abghari, JP Bardet, Po Lam, Dave McCallen, Jack Moehle, Paul Van Laak • First meeting September 13, 2001 • Three board members attended physically • Two members attended by polycom • Project status and other presentations from EAB meeting are posted at: • http://cgm.engr.ucdavis.edu/NEES/eab/eab.html UC Davis

  4. Questions for SI, CD, NSF • NEESpop • Where does it fit in our LAN? • Who pays for it? • What are the specs? • Clarification of responsibilities of • NSF, Equipment sites, SI, and CD • Who is responsible to make sure that the SI system fits with the equipment sites and the whole NEES works together? UC Davis

  5. Question for Equipment Sites • Can we share hardware and software design, development and maintenance costs? • Data Acquisition Systems • LAN hardware and software • NEES Software (visualization, telepresence) • Expertise of people at certain sites may be helpful to other sites UC Davis

  6. Solid model of UCD centrifuge UC Davis

  7. New Bearings New Gear Box Streamline room SPEED UPGRADE UC Davis

  8. UCD Centrifuge Robot UC Davis

  9. Geophysical Methodsin the Centrifuge: At GaTech Material property characterization. High resolution ELM Needle probe Semi-reflective multiple layers for GPR-based monitoring S-wave imaging At UC-Davis ELM Needle probe implementation in centrifuge models P-waves/ultrasound: validation with medical devices Development of internal ELM sources Initial implementation of resistivity tomography UC Davis

  10. ABAQUS analysis in progress - safety issues - performance issues NEESgrid support for analysis is appreciated. Biaxial Shaker UC Davis

  11. Process • buffer • transmit data concentrator data concentrator custom communication serial communication Wireless transceiver Wired RESDAQ PC custom communication PXI w/ A/D sensor manager conventional transducers SDI 1010x +/- 200g 0 – 2500 Hz All data synchronized sensor UC Davis

  12. Wireless concepts (Now focussing on A and B, C seems not optimal due to transmitter/battery size, D is more related to Geophysical Testing component of our NEES project) UC Davis

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