The Design Specification Phase What Should be Addressed in the Product Design Specification.

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The Design Specification Phase What Should be Addressed in the Product Design Specification

Transcript of The Design Specification Phase What Should be Addressed in the Product Design Specification.

The Design Specification Phase

What Should be Addressed in the Product Design Specification

Overview of Design Process

Another View

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

• Testing– why?– how?– when?

• Safety– OSHA– UL– labeling

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

Design Specification PhaseWhat to Include

• References– “Product Design and development”, Ulrich and

Eppinger, McGraw-Hill, Inc. 1995– “Total Design”, Stuart Pugh, Addison-Wesley

Publishing Company, 1991– Personal experience, 1958-present– http://www.rose-hulman.edu/~voltmer/

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