14471 vibration test apparatus: systems design review team lead: brett billings lead engineer:...
DESCRIPTION
Engineering Requirements: The Design DriversTRANSCRIPT
14471 Vibration Test Apparatus:Systems Design Review
Team Lead: Brett BillingsLead Engineer: Nicholas G
Scribe: Ashley WEDGE: Claire Kobal
Team Members: JacobRyan
Ronald
Problem Statement
Engineering Requirements:The Design Drivers
Benchmarking
Functional Decomposition
Risk Assessment ID Risk Effect Cause Severe Likely Score Action Items
1 Displacement is not equal to 1/32" Apparatus doesn't meet UL844 Mechanical Failure 3 2 6 Make it adjustable
2 Vibration is not 2000 cycles per min apparatus doesn't meet UL844 crankshaft slipping 3 2 6 Evaluate previous teams design
7 Pinch points exist Operator injury could occur Existance of pinch points 2 3 6 Design guarding, enclosure,
and/or warning labels
14 Project deadline is not met
Customer is dissatisfied, students receive poor course grade, RIT's
reputation is negatively impactedCorrection of mistakes 3 2 6 Participatein milestone design
reviews
2 Vibration is not 200 cycles per min Apparatus doesn't meet UL844 Speed reducer slipping 2 2 4 Splash guard / maintenance
8Apparatus is not
ergonomically safe to set up
Operator injury could occur Set up requires awkward positioning 2 2 4 Evaluate setup with ergonomic
lifting equations
9 Can't mount all configuration types
Customer is not going to be able to test some configurations Project scope 2 2 4 Use current fixtures
12 Over budget Customer is dissatisfied, engineering requirements must be sacrificed
Unforeseeable expenses 2 2 4 Proper budgeting/compare
prices/buy standard sizes
14 Project deadline is not met
Customer is dissatisfied, students receive poor course grade, RIT's
reputation is negatively impacted
Materials are delivered late 2 2 4 Order before Winter break
Delay in Tool Shop 2 2 4 Schedule machine time 1 week in advance with Tool Shop
Morph Chart Overview
Alternatives Considered: Pugh Chart individual components
• Need individual pugh charts for– Vibration displacement– Vibration frequency– Connect to motor– Time – Display Feedback– Connect to machine
Morph Chart (Datum)
Morph Chart (Option 2)Morph Chart
Morph Chart (Option 3)Morph Chart
Pugh Chart Overall Systems
Selected Concept
• NEED SKETCH OF THIS!
Architecture
Central System
Power supplyMotor system
Sensors
Display/user interface
Luminaire connection
Crankshaft connection
Safety features
Risk Assessment of Selected Concept
Display & Control System
• Cycles per minute directly proportional to RPM• Three core components required for control:– RPM Sensor– RPM Adjustor– RPM Display
• Laser tachometer used as a sensor• Variable-Frequency Drive (VFD) to adjust speed• Digital display for reading back speed
Engineering Analysis: Motor
Engineering Analysis: Frame Analysis
Engineering Analysis: Control Systems
Engineering Analysis: Costs
Engineering Analysis: Sound
Test Plan (First Revision)
• Test Displacement– Validate the 1/32” total displacement
• Test Vibration Cycles– Validate 2000 cycles/min
• Test life– Accelerated life test on belt and motor
• Test fittings– Do they fit the frame?
• MORE??????
Schedule for Next Phase
Questions?
Appendix /Reference Information
• Space for reference info for potential questions
• If not used please remove this slide