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