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Design Specification PhaseWhat to Include
• Performance– temperature range
– altitude
– humidity
– shock loading
– corrosion resistance
– noise levels
– insects
– user capability
Design Specification PhaseWhat to Include
• Service Life– assessed against what?
• Maintenance– by whom?– how often?
• Target Production Cost– established at outset
Design Specification PhaseWhat to Include
• Competition– competitive products– patents– papers
• formal evaluation
• Shipping
• Packaging
Design Specification PhaseWhat to Include
• Quantity– market– production costs
• Manufacturing Facility– make it ourselves?– outsource?– what country?
Design Specification PhaseWhat to Include
• Size– constraints?
• Weight
• Aesthetics– appearance– finish
– what the customer sees!!!
Design Specification PhaseWhat to Include
• Materials– any restrictions?– What do customers expect?
• Product Life Span– as a market entity
• Standards and Specifications– do any apply?
Design Specification PhaseWhat to Include
• Ergonomics– user interface
• Customer– know what customer wants
• talk to them
• competitors trends
Design Specification PhaseWhat to Include
• Quality and Reliability– determine up front
• manufacturing process
• distribution logistics
– standards• ISO 9000
• UL
• ANSI/IEEE
• EEC (EU)
– build in feedback to designer
Design Specification PhaseWhat to Include
• Shelf Life (Storage)– very often overlooked
• Processes
• Time Scales– design time– tooling time– materials delivery times
Design Specification PhaseWhat to Include
• Company Constraints– product history– manufacturing capability– financial– attitudes
• Market Constraints– know the market
Design Specification PhaseWhat to Include
• Patents, Literature and Product Data– research all the data
• Political and Social Implications