Unformatted text preview: IED Lecture 3 Class Goals
Mini Project Discussion Translating Customer Needs Engineering Specifications Exploring Past Work Popcorn Bag Sample IED Mini Project Discussion
Turn in 1 page Memo today What is your top idea ? What would you measure and why ? IED Mini Project Discussion
1 page Memo will be reviewed Idea will be approved ASAP If today's feedback requires it, turn in second version next class IED Mini Project Discussion Go around room and tell class your project idea and what you hope to measure IED Design Where to start
Someone has basic idea Translating Customer Needs Engineering Specifications Exploring Past Work Define Primary Function Quantify Target Value IED Translating Customer Needs
Recap from last time The Customer is No. 1 The Customer may be clueless They may have conflicting ideas How does one sort it all out ? Create specifications ! IED Engineering Specifications IED Engineering Specifications
Are crucial to success Makes or breaks the project Often not determined effectively ! IED What are Product Specifications?
A set of measurable characteristics for which target values are established for purposes of evaluating a product design In establishing product specifications, a design team must consider the following: IED How well are "all" the customer needs satisfied by the metrics? What are appropriate levels for setting target values? Example of Need-Metric-Value Translation
Need Allows easy traversal of slow difficult terrain Marginal Value 480 to 800 N Metric Spring Preload Ideal Value 650 to 700 N IED Steps for Establishing "Preliminary" Product Specifications
Prepare list of metrics using needs vs metrics matrix 2. Collect competitor benchmarking information 3. Set "ideal" and "marginally acceptable" target values for each metric 4. Review and edit results (refine product specs after concept selection)
1. IED Step 1 Develop Technical Models
External Factors Corrosion Fatigue End User Inputs Passenger Weight Terrain Conditions Loading Spring Model Control Factors Spring constant Pre-load compression Max travel Outputs Spring preload Max load Models a IED are almost always unique toto particular concept Models facilitate sensitivity analysis varying parameters External Factors Corrosion Fatigue End User Inputs Passenger Weight Terrain Conditions Loading Spring Model Control Factors Spring constant Pre-load compression Max travel Simple Iteration provides a quick understanding of design sensitivities Spring Loading = Spring Constant x Travel Distance F=kx Outputs Spring preload Max load IED Steps 2 & 3: Collect competitor benchmark information and set ideal & marginal target values for each metric.
ST Tritrack 550 N Maniray Rox Tahx Quadra 500 N Rox Tahx Ti21 710 N Tonka Pro 480 N Gunhill Head Shox 680 N 760 N Marginal Value: 480 to 800 N Ideal Value: 650 to 700 N IED Be careful about relying upon a companies published data. Industrial practice is to perform actual tests. Step 4 - Review and edit results
Refine product specs after concept selection Always good to verify with customer They often change their minds ! IED Exploring Past Work
Web Searching Patent Searching Trade shows Magazines and Journals IED Why Search Patents ?
Has it been done before ? Did the inventor think it worth the costs for the potential market ? Did the patent expire yet ? Will you have to pay royalties ? IED Are Patents useful to obtain ?
YES if market pays $$ NO if no $$ Vast majority of patents never made a dime ! IED Patent Searching
RPI Library has good starting link
http://library.rpi.edu/update.do? artcenterkey=398 http://www.uspto.gov/ IED Define Primary Function
Product needs to do one thing and do it well Engineer focuses on the Primary Function Most testing performed on this IED Quantify Target Value
Produced by combination of Results of Analysis Results of Testing Without Target Value how do you know when to stop ? IED Mini Project Popcorn Opener
Used to open microwave bags Fast acting Cheap IED IED Popcorn Opener - Needs
Open a bag Not effected by steam Lightweight Can be easily cleaned IED Popcorn Opener - Metrics
Open a bag Not effected by steam Lightweight Can be easily cleaned IED 3 to 5 lbs 212 deg F 1 to 3 lbs Waterproof in sink, i.e. (Low pressure) Popcorn Opener Patents ?
"popcorn bag opener" Nothing "popcorn bag" 107 patents 5,952,025 for the bag expected 5,780,824 different design container who has seen this product ? IED Patent No. 5,952,025 IED Nothing new here ! Patent No. 5,780,824
Will not work with opener Not expected product Less market less than thought ? IED IED Lab Tour
Open starting this week Can use when pass Safety Quiz Hand in now IED ...
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- Spring '08
- Mini Project Discussion