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Brandon RobinsonDanut TabacaruVictor Ho
Autonomous Spacecraft Impact Monitoring
Preliminary design presentation
Autonomous Spacecraft Impact Monitoring
Preliminary design presentation
Project overviewProject overview
Test plate set up with strain gauges and transducers
Phase 1: Impact force magnitude and direction detection
Phase 2: Damage detection and analysis
Phase 3: Damage repair
Budget updateBudget update
*Denotes total cost including items purchased using OCE and in-house funding.
Items to be Purchased Expected Costs
Transducers $200Project Demo Poster $100
Total $300
Items Purchased Initial Cost Estimate
Actual Cost
Aluminium Plate $10 $12Frame - $9.03
Strain Gauges and Bond $400 $224.70Data Acquisition Equipment $800 $4,289.35
Sandpaper - $3Electronic Circuit Equipment - $94.48
Tektronix 2024b Oscilloscope
- in-kind
Total* $1,210 $4,632.56Total $410 $343.21
Hardware update (1)Hardware update (1)Test Plate
14.5” x 14.5” dimensions1/16” thicknessIndustrial grade 6061
aluminum
FrameAluminum pieces cut
from dry-wall framesFrame attached to edges
of plate so that a 12” x 12” area of the plate is left unsupported
Test Plate and Frame
Hardware update (2) Hardware update (2)
Strain GaugesVishay 240UZLow Cost0.24” gauge length4 per side layout –
16 in total
Data Acquisition NI cDAQ-9174 chassisNI 9235 8-channel
quarter-bridge strain gauge modules Vishay 240UZ
Hardware update (3) Hardware update (3) Transducers
Pulsing CircuitAmplification
555 TimerTransformer CoilVoltage Ladder
Pulse555 TimerClass C AmpClass A Amp
Amplified Pulse
Pulsing Circuit
Hardware update (3) Hardware update (3)
software update software update Software
MATLABLabViewMeasurement Studio
NI Measurement StudioIncluded driversGUI, Analysis, etc.Visual C++
Modular
CalibrationForce and Position Block Diagrams
Modeling updateModeling update
ANSYS 10.0Analytical model using
FEMModeled using Aluminum
6061 propertiesShell 8node93Provide a baseline for
physical model
Test plate modeled in ANSYS
Risk managementRisk management
Project is spaced out into phases
Phase I – EssentialPhase II – PossiblePhase III – If time permits
Accuracy can be reducedBudget remaining
Milestone updateMilestone update
Task Expected Completion DateTesting of force detection using strain gauges
08-Feb-10
Complete circuit to drive transducers 12-Jan-10Obtain transducers 19-Jan-10Secure transducers on test plate 02-Feb-10Complete software to analyze transducer data
February 10,2010
Testing of damage detection using ultrasonic transducers
03-Mar-10
Thank youThank you