Chapter 5 - Product Specifications MSE-415 Product Design Lecture #5 Chapter 5 - Product Specifications

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 Customer needs Establish target specification

Concept Development Process Mission Statement Development Plan Identify Customer Needs Establish Target Specifications Generate Product Concepts Select Product Concept(s) Test Product Concept(s) Set Final Specifications Plan Downstream Development 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

Product Specifications Example: Padlocks

Customer Needs # Need Imp 1 The lock has many available combinations 2 is resistant to hot temperatures 3 has a shackle diameter of 0.31-inch 4 is resistant to tampering 5 is lubricated 6 is unable to be lock in the open position 7 has many graduated marks 8 is protected against radiographic entry 9 is combination changeable 10 is difficult to cut at the shackle

Establish Metrics and Units Need# Metric Imp Units 1 2 3 4 5 6 7 8 9 10

Link Metrics to Needs

Benchmark on Customer Needs

Benchmark on Metrics

Assign Marginal and Ideal Values Metric # Metric Units Marginal Value Ideal Value 1 Available combinations ea >30,000 >50,000 2 Resistant to heat for 5 minutes Deg F 250 300 3 Shackle diameter inch .30 - .35 .31 - .33 4 Tamper resistant Min >15 >30 5 Lubrication cycles >2500 >5000 6 Shackle can not be lock in the open position N/A Yes 7 Face marking >40 >50 8 Radiographic protection >10 9 Combination changeable 10 Non Corrosive

Concept Development Process Mission Statement Development Plan Identify Customer Needs Establish Target Specifications Generate Product Concepts Select Product Concept(s) Test Product Concept(s) Set Final Specifications Plan Downstream Development 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

Perceptual Mapping Exercise Shackle cutting test Price Wilson Bohannan Opportunity? Master American Abus

Specification Trade-offs

Set Final Specifications # Metric Units Value 1 Available combinations ea >30,000 2 Resistant to heat for 5 minutes Deg F 300 3 Shackle diameter inch .31 - .33 4 Tamper resistant Min >30 5 Lubrication cycles >5000 6 Shackle can not be lock in the open position N/A Yes 7 Face marking >50 8 Radiographic protection 9 Combination changeable 10 Non Corrosive

Next Week - October 3, 2007 Lecture #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