project management jan 27, 2006 james r. matt technical fellow general motors corp
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Project ManagementJan 27, 2006
James R. MattTechnical Fellow
General Motors Corp
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“I think there is a world market for maybe five computers.”
-- Thomas Watson, chairman of IBM, 1943
Conventional Wisdom: A Rogue’s Gallery
“There is no reason anyone would want a computer in their home.”
Ken Olson, President, Chairman and Founder of Digital Equipment Corp., 1977
“640K ought to be enough for anybody.”Bill Gates, 1981
“What do 13 people in Seattle know that we don’t?”
Ross Perot when presented with a proposal for EDS to acquire Microsoft, 1980
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Key Thoughts & Simple Tools
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Coarse to FineProduct Development
Needs&
Ideas
Organize& Prioritize
SelectProof of Concept
TechnicalSolution
Development
ProductionReadiness
Manufacturing&
Production
Customer and Market Feedback
(data from: Marketing, Sales, Quality, Benchmarking, Customers)
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Spider Chart Performance Targets and Key Wins
Today’s Product or Situation
Best in Class CompetitionTargets for new Design
Key Wins
FasterSpeed
SmallerSize
Durability Life
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Trade-off study matrix
Desig
n
Op
tion
#1
Desig
n
Op
tion
#2
Desig
n
Op
tion
#3Example Criteria
Performance
Cost
Mass
Quality
Volume / Size
Risk
Durability
Summation
Key: “++” = Much Better
“+” = Somewhat Better
“0” = No Improvement
“-” = Worse
“ - - ”= Much Worse
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Trade-off study matrix
Desig
n
Op
tion
#1
Desig
n
Op
tion
#2
Desig
n
Op
tion
#3Example Criteria
Performance
Cost
Mass
Quality
Volume / Size
Risk
Durability
++
++
++
++- -
- -
0
-
+
+
0
-
+
+
+
+
0
0
0
++
-
Summation +1 +5 +3
Key: “++” = Much Better
“+” = Somewhat Better
“0” = No Improvement
“-” = Worse
“ - - ”= Much Worse
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Engineering Project Management
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Phase 00Phase 00Define
Requirements, Key Interfaces,& Constraints
Concepts Generate Detail
Concept
Product Development
Approve ProjectPlan, Team, and & Deliverables
RequirementsAgreement
Select & Approve Design
Concept
1 2
ApproveDetail Concept
43
Optimize &
Verify
ApproveConcept
Verification
5
Technology Planning
Determine Needs, Select Projects.& Assign Teams
I - IdentifyD1
Define Requirements
D2 – Design Concept
O - Optimize
V - Verify
DFSS ‘ IDDOV & Product Development
Design for Six Sigma IDDOV
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Phase 00Phase 00Define
Requirements, Key Interfaces,& Constraints
Product Development
Approve ProjectPlan, Team, and
& Deliverables
1 2 43 5
Technology Planning
Determine Needs, Select Projects.& Assign Teams
Project Tasks and Gate Reviews
Tasks:•Determine Perf & Manf Requirements
•Define Business Targets
•Define Needs
•
Review with key Stakeholders
•
Develop Commercial Approach
•
Define Project Plan & Resources Required
Tasks:
•Establish Project Plan
•Obtain Lessons Learned
•Draft Initial Specifications
•Define Interfaces, Constraints
•Gather Information todetermine Requirements
•Conduct Gate Review #1
Tasks:•Generate & Assess Alternative concepts
•Perform Evaluations
•Concept Tradeoff Study
•Refine Specifications & Robust Eng Plan (DOE)
•Conduct Concept Reviewand Approve Design Concept
Tasks:•Develop purchasing info
•Conduct Robust assessment•Optimize Concepts
•Conduct Peer Review
•Update all Business, Technical, and Project Documents
•Approve Details ConceptMake Purchasing Decisions
Tasks:•Develop Design
•Finalize Development &Test Plan
•Construct, Build, and Test Prototype
•Verify Hardware, Softwareto Technical Requirements
Conduct Final DesignReview
•Update all Business & Technical Documents
Define Requirements Key Interfaces & Constraints
Concept Generation & Design Selection
Robust Assessment & Purchasing
Optimize & ValidateDefine Initial Project
•
RequirementsAgreement
Select & Approve Design
Concept
ApproveDetail Concept
ApproveConcept
Verification
Concepts Generate Detail
Concept
Optimize &
Verify
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Five Objectives of Every Project Gate Review
1) Explain the Benefits of the Technical Solution or Technology
2) Show the Technical Feasibility of approach and solution
3) Show the Balance of Performance to Business Imperatives
4) Explain the Risks:a) Business.b) Application Timing.c) Technical.
5) Explain the Expected Engineering Expenses & Costs.
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Risk
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‘Risk’ Types of Risk (things gone ‘wrong’, or critical items not going ‘right’)
• Business• Timing• Technical
Quantify Relative Risk
Risk f(L,M) = (Likelihood) X (Magnitude)
Method1. Brainstorm Potential Problems2. Define Likelihood of Occurrence (1 -10 scale)3. Define Magnitude should problem occur (1-10 scale)4. (Risk Priority Number) RPN = (Likelihood) X (Magnitude)5. Rank order into a bar chart (Pareto Diagram)6. Define Countermeasures
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Pareto Diagram
RPN(Risk
PriorityNumber)
Specific Potential Problems
Focus on the high RPN Risk items and put in place Countermeasures
Must Insure --‘Bang for the Buck’(limited resources cause the need to Focus)
Lower
Higher
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Modularity & Standard Parts as Risk Reduction
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Component Design & Build Approach
TransferFunction
InputIntendedOutput
Risk:Output not Design Intent
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Component Design & Build Approach
TransferFunction
Input
IntendedOutput
Risk:Unintended Interactions
TransferFunction
Input
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Independent Component Design & Build Approach
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Component Design & Build Approach
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Modular Build Approach
Sub-assembled & Pre-Tested Modules
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Modular Build Approachwith Standard Parts
Using Standard Parts
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ExampleHeadlamp & Turn Signal
Multifunction Electrical Switch
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5 Phase Problem Resolution
1. Problem Definition
2. Containment, Immediate Corrective Action
3. Root Cause
4. Irreversible Corrective Action
5. Verification
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ExampleMultifunction Headlamp Switch
HeadlampOn / Off
HeadlampHigh / Low
Turn Signal
Cruise ControlSet, On, Off
Customer Electrical Control
Component test plan was designed to test each function
as independent variables
All part passed the lab test without incident
Functions
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HeadlampOn / Off
HeadlampHigh / Low
Turn Signal
Cruise ControlSet, On, Off
Customer Electrical Control
However:Mechanical Interaction Inside theMultifunction Switch caused the
headlamp contact carrier to slightly rock when the Turn Signal was used.
This caused a voltage spike and high resistance path and heat in the switch.
Functions
ExampleMultifunction Headlamp Switch
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ExampleMultifunction Headlamp Switch
HeadlampOn / Off
HeadlampHigh / Low
Turn Signal
Cruise ControlSet, On, Off
Customer Electrical Control
DOE factors for test matrix1) Type of Lubricant in the switch2) Contact Material 3) Contact Plating4) Spring Pressure
The optimal combination was found and the design was quickly changed.No field issues were found
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ExampleUpper Strut Mount
Design For Six Sigma Example
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Define the Basic Functions
• Brainstorm a list of Basic Functions the Product must provide. “What does this thing need to do?”– Use Verbs:
• React• Position• Isolate• Filter• Rotate• Limit• Amplify• etc
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Consider Classis Failure Mechanism that Cause Failure Modes
• Creep • Fracture • Yield • Physio-Chemical Instability • Dimensional Incompatibility • Contamination • Vibration and Mechanical Shock • Environmental • Wear
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Consider Classis Failure Mechanism that Cause Failure Modes
• Creep (relaxation and flow over time, plastic movement, often accelerated with heat or high loads)
• Fracture (brittle failure due to sudden physical overload, cracking)• Yield (Tensile or bending failure, permanent deformation)• Physio-Chemical Instability (Chemical change in material
properties, Corrosion, UV instability, chemical attack of solvent or lubricants, heat aging of rubber)
• Dimensional Incompatibility (Stack up of tolerances, mis-positioning, flexing of base or bracket, too big, too small)
• Contamination (dirt, grit, dust, mixed materials)• Vibration and Mechanical Shock (mechanical or electrical
high frequency, surge, sudden overload)• Environmental (hot, cold, humid, submersion)• Wear (repeated cyclic load causing material removal)
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Matrix Functions vs Failure Mechanisms – Evaluate Risk due to Sensitivities
Cre
ep
Frac
ture
Yie
ld
Phy
sio
-Che
mic
al In
stab
ility
Dim
ensi
onal
Inco
mpa
tibili
ty
Con
tam
inat
ion
Vib
ratio
n an
d M
echa
nica
l Sho
ck
Env
iron
men
tal
Wea
r
React
Position
Isolate
Filter
Rotate
Limit
Amplify
Functions
Failure Mechanisms
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Matrix Functions vs Failure Mechanisms – Evaluate Risk due to Sensitivities
Cre
ep
Frac
ture
Yie
ld
Phy
sio
-Che
mic
al In
stab
ility
Dim
ensi
onal
Inco
mpa
tibili
ty
Con
tam
inat
ion
Vib
ratio
n an
d M
echa
nica
l Sho
ck
Env
iron
men
tal
Wea
r
React
Position
Isolate
Filter
Rotate
Limit
Amplify
High
High
High
High
Med
Med
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Matrix Assessment – Knowledge Gathering
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Position
Stays in place over life
Tolerant of misaligned mating parts
Isolate
Quiet over life
Noise Transmission is good
React Loads
Rate Curve is within Bandwidth
Structure handles load with out excessive Damage
(Failure Mechanisms cause Failure Modes)Environment
ContaminationYield
FatigueFracture
Vibration / Mechanical ShockWear
Electrical / Software CompatibilityPhysio-Chemical Instability
CreepDimensional Incompatibility
DFSS - Front Upper Strut Mount
Noise Factors
Functions:Position,Isolate,
React Loads
Energy Desired Functional Characteristic
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Noise Factors
Functions:Position,Isolate,
React Loads
Energy Primary Function
The Forward Pass
Position
Isolate
React Loads
Fai
lure
Mec
han
ism
s E
nvi
ron
men
tC
onta
min
atio
nY
ield
Fra
ctu
reV
ibra
tion
/ M
ech
anic
al S
hoc
kW
ear
Ele
ctri
cal /
Sof
twar
eP
hys
io-C
hem
ical
In
stab
ilit
yC
reep
Dim
ensi
onal
In
com
pat
ibil
ity
Primary FunctionsLikelihood: of compromise of a “Primary Function” due to a Sensitivity to “Failure Mechanism”.Strong Likelihood = “ + ”Neutral = “ 0 ”Not Sensitive = “ – ”
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Functions:Position,Isolate,
React Loads
Anticipated or
Historic Problems
The Reverse Pass learn for what has happened before
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Noise Factors
Chart the probability of each Failure Mechanism contributing to historic problems and loss of desired Functions
Failure Mechanisms Environment
ContaminationYield
Fracture Vibration / Mechanical Shock
WearElectrical / Software
Physio-Chemical InstabilityCreep
Dimensional Incompatibility
In this case, Contamination, Yield, Wear, and Dimensional Incompatibility are the high Occurrence Failure Mechanism that are anticipated as the dominate Noise factors.
Functions:Position,Isolate,
React Loads
EnergyDesired Functional Characteristic
Anticipated Problems
Forward Pass
Reverse Pass
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Now think in terms of the design Components (and for competing design options)
A – Inner Metal B – Primary/Shear IsolatorC – Upper Rate WasherD – Reaction WasherE – Reaction IsolatorF – Outer/Compression IsolatorG – Main StampingH – Lower Rate Washer
A
B
C
D E
F
G
H
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Top Mount Bearing
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DOE:•Partial Factorial Matrix experiment
•Expert Knowledge, seek help in creation•Garbage in Garbage out (usually due to bad assumptions)
•Want a simple lab fixture(s) to run a fast DOE to understand design sensitivity to Noise factors.•Run carefully Created samples to test for interactions
Failure Mechanisms Contamination
WearPhysio-Chemical Instability
Dimensional Incompatibility
Pos
itio
n
Isol
ate
Rea
ct L
oad
s
Noi
se a
t th
e en
d o
f li
fe
Los
s of
att
ach
men
t
Bea
rin
g D
rag
Non
-lin
ear
road
fee
l
X
X
X
XX X
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Basic Principles – Friction, transient loads, moments, unforeseen interactions, manufacturing processes capabilities, marginally stable systems, static electricity, grounding
Wrong Assumptions (independence of functions in switch example)
Lack of parts available on time
Components cost more than estimated
Stack up of tolerances – reality is not design nominal
Murphy’s Law, Chaos Theory, probability and statistical theory at work
False or unachievable accuracy
Causes of Problems
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Idea GenerationDo not jump to conclusions or select your mainstream concept too quickly. Brainstorm, talk to experts, consider viability of alternatives, carefully select your mainstream direction based on Tradeoffs.
ExecutionSet up a good project plan with Milestones and Gate Reviews
Clearly defined Deliverables
Set up a budget (with a 10% contingency) and obtain good cost estimates and availability of materials, manpower, and facilities
Front Load your efforts – get off to a good start
Assign tasks to team members based on skill sets and personal preferences. Monitor progress, keep things visible.
Design and Build Modules where practical.
Use Standard parts and commonly available materials
Allow time for experimentation and ‘Slack time’ for things to go wrong in build & test.
Do your homework
Helpful Ideas & Thoughts
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Closing Thoughts
Good LuckGet Started
Have Fun& Expect Things to go Wrong