Product Design

• Specifies materials• Determines dimensions & tolerances• Defines appearance• Sets performance standards

Service Design

Specifies what the customer is to experience–physical items–sensual benefits–psychological benefits

Stages In The Design Process• Idea Generation

–Product Concept

• Feasibility Study –Performance Specifications

• Preliminary Design –Prototype

• Final Design –Final Design Specifications

• Process Planning–Manufacturing Specifications

No

Ideageneration

Finaldesign

Preliminarydesign

Feasibilitystudy

Processplanning

Productfeasible?

Yes

Prototype

Manufacturing

Design & ManufacturingSpecifications

The Design Process

Idea Generation• Suppliers, distributors, salespersons• Trade journals and other published material• Warranty claims, customer complaints, failures• Customer surveys, focus groups, interviews• Field testing, trial users• Research and development

Feasibility Study

• Market Analysis

• Economic Analysis

• Technical / Strategic Analysis

Preliminary Design

• Create form & functional design• Build prototype• Test prototype• Revise prototype• Retest

Final Design & Process Planning

• Produce detailed drawings & specifications• Create workable instructions for

manufacture• Select tooling & equipment• Prepare job descriptions• Determine operation & assembly order• Program automated machines

An Effective Design Process

• Matches product/service characteristics with customer needs

• Meets customer requirements in simplest, most cost-effective manner

• Reduces time to market• Minimizes revisions

Improving The Design Process

1. Design teams & concurrent design

2. Design for manufacture & assembly

3. Design for environment & sustainability

4. Design for robustness & quality