Chapter 5 - Product Specifications

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Chapter 5 - Product Specifications
MSE-415 Product DesignLecture 5
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Lecture Objectives

• Discuss Results of Quiz 1
• Discuss Homework 2
• Not group assignment, must follow instructions
• Product Specifications
• What are specifications
• Why are specifications established
• How are specifications established
• Preparing the metrics
• Collect competitive benchmarking information
• Set ideal and marginally acceptable target values
• Reflect on the results and the process
• Setting the final specification
• Develop technical models of the product
• Develop a cost model of the product
• Refine the specification, making trade offs where
  necessary
• Flow down the specifications as appropriate
• Reflect of the results and the process
• Discuss design and development project
• Project plan

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Concept Development Process
Mission Statement
Development Plan
Identify Customer Needs
Establish Target Specifications
Generate Product Concepts
Select Product Concept(s)
Set Final Specifications
Plan Downstream Development
Test Product Concept(s)
Perform Economic Analysis
Benchmark Competitive Products
Build and Test Models and Prototypes
Target Specs Based on customer needs and
benchmarking
Final Specs Based on selected concept,
feasibility, models, testing, and trade-offs
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Product Specifications Example Padlocks
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Customer Needs
Need Need Imp
1 The lock has many available combinations 1
2 The lock is resistant to hot temperatures 2
3 The lock has a shackle diameter of 0.31-inch 3
4 The lock is resistant to tampering 2
5 The lock is lubricated 3
6 The lock is unable to be lock in the open position 1
7 The lock has many graduated marks 2
8 The lock is protected against radiographic entry 3
9 The lock is combination changeable 1
10 The lock is difficult to cut at the shackle 2
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Establish Metrics and Units
Metric Need Metric Imp Units
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10
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Link Metrics to Needs
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Benchmark on Customer Needs
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Benchmark on Metrics
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Assign Marginal and Ideal Values
Metric Metric Units Marginal Value Ideal Value
1 Available combinations ea gt30,000 gt50,000
2 Resistant to heat for 5 minutes Deg F 250 300
3 Shackle diameter inch .30 - .35 .31 - .33
4 Tamper resistant Min gt15 gt30
5 Lubrication cycles gt2500 gt5000
6 Shackle can not be lock in the open position N/A Yes Yes
7 Face marking ea gt40 gt50
8 Radiographic protection Min gt10 gt30
9 Combination changeable N/A Yes Yes
10 Non Corrosive N/A Yes Yes
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Concept Development Process
Mission Statement
Development Plan
Identify Customer Needs
Establish Target Specifications
Generate Product Concepts
Select Product Concept(s)
Set Final Specifications
Plan Downstream Development
Test Product Concept(s)
Perform Economic Analysis
Benchmark Competitive Products
Build and Test Models and Prototypes
Target Specs Based on customer needs and
benchmarking
Final Specs Based on selected concept,
feasibility, models, testing, and trade-offs
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Perceptual Mapping Exercise
Opportunity?
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Specification Trade-offs
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Set Final Specifications
Metric Units Value
1 Available combinations ea gt30,000
2 Resistant to heat for 5 minutes Deg F 300
3 Shackle diameter inch .31 - .33
4 Tamper resistant Min gt30
5 Lubrication cycles gt5000
6 Shackle can not be lock in the open position N/A Yes
7 Face marking ea gt50
8 Radiographic protection Min gt30
9 Combination changeable N/A Yes
10 Non Corrosive N/A Yes
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Next Week - October 3, 2007Lecture 6

• Final Design and Development Project
• Project plan
• Customer needs
• Establish target specification
• Homework 3
• Select one of these items Skateboard, toaster,
  wheelbarrow and go through the process of
  establishing a target specification for potential
  entry into that market
• Preparing the list of metrics
• Collecting competitive benchmarking information
• Setting ideal and marginally acceptable target
  values
• Reflect on the results and process.
• Read Chapter 6 Concept Generation
• Discuss the five step method
• Discuss the product planning process