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