A NEES Geotechnical Centrifuge Facility at Davis
description
Transcript of A NEES Geotechnical Centrifuge Facility at Davis
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A NEES Geotechnical
Centrifuge Facility at Davishttp://cgm.engr.ucdavis.edu/NEES/nees.html
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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
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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
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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?
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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
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Solid model of UCD centrifuge
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Streamline room
SPEED UPGRADE
New Bearings
New Gear Box
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UC
D C
entr
ifuge
Rob
ot
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Geophysical Methodsin the Centrifuge:
At GaTechMaterial property characterization. High resolution ELM Needle probeSemi-reflective multiple layers for GPR-based monitoringS-wave imaging
At UC-DavisELM Needle probe implementation in centrifuge modelsP-waves/ultrasound: validation with medical devicesDevelopment of internal ELM sourcesInitial implementation of resistivity tomography
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Bia
xial
Sha
ker
ABAQUS analysis in progress
- safety issues
- performance
issues
NEESgrid support for analysis is appreciated.
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sensor manager
sensor
•Process•buffer•transmit
SDI 1010x
+/- 200g
0 – 2500 Hz
data concentrator
RESDAQ PCWireless
transceiver Wired
data concentrator
custom communicationserial
communication
PXI w/ A/D
conventional transducers
custom communication
All data synchronized
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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)