Chapter 10 1

The Design Process

Chapter 10

Achieving Quality Through Continual ImprovementClaude W. Burrill / Johannes Ledolter

Published by John Wiley & Sons, Inc., 1999

Prepared by Dr. Tomi Wahlström,

University of Southern Colorado

Chapter 10 2

Introduction• Design is the creative process of converting

customer requirements into a product concept and capturing that concept in a set of product requirements that are complete, clear, and consistent.

• Related products– Cost– Design and information– Design and ISO 9000 standards

Chapter 10 3

The Design Process

• Project methodology: – Review project inputs– Develop a design concept– Develop a plan for producing components– Develop a quality plan– Develop the design according the plan– Conduct a final review

Chapter 10 4

The Design Process

• Project management– An environment that fosters work– Properly defined work requirements– Effective plans and controls– Proper and stable work procedures– Adequate resources

• Design manager

• Project Personnel

Chapter 10 5

Design Inputs

• Identify all customers for the product and collect all their requirements.

• Reference materials used in the design process.

• Computer software.– Coordination between design department and

IS department required.

Chapter 10 6

Design Quality Control

• Development testing– Done by and for the benefit of the designer

• Design reviews– Formal procedure for the review of design

products by qualified group of people

• Product qualification– Formal phase of testing conducted to prove that

the design meets requirements.

Chapter 10 7

Design Control

• Concerns control of design process and the design concept, not just the design documents.

• The easy part to verify that drawings and specs meet requirements

• The difficult part to verify that an evolving collection of individual design documents is complete and correct.

Chapter 10 8

Change Control

• Change procedure should explain how to:– Initiate the change request– Evaluate and approve a change request– Plan and allocate resources– Verify that change is satisfactory– Implement the change– Verify effectiveness and consequences– Update documents and history file

Chapter 10 9

Control of Released Designs

• Once a design has been reviewed and released for production, problem of uncontrolled changes in the design during the production occurs.

• Should be handled with procedure similar to the one used for the design process.

Chapter 10 10

Subcontracting

• What parts of the design will be built by the organization and what parts will be obtained from outside source.

• Critical issue as the quality of the subcontracted parts cannot be controlled and assured.– ISO 9000 standards developed for this reason.

Chapter 10 11

Quality Function Deployment

• Also known as the House of Quality.

• Consists of a set of planning and communication routines for coordinating cross-functional planning.– Interfunctional team– Systematic roadmap– Customer attributes– Voice of the customer

Chapter 10 12

House of Quality

• See book on pages 206 to 211

Chapter 10 13

Designing the Production Process• Determine all customers for the process• Determine all requirements for each customer• Decide of the technology to be employed• Design the transformation process• Design the control process• Review the design• Document the process

Chapter 10 14

Concurrent Engineering

• Systematic approach to the integrated, concurrent design of products and their related processes, including manufacturing and support.

• Related to QFD– QFD is a technique for designing products– CE is a technique for designing the processes to

be used

Chapter 10 15

Questions?

Chapter 10 16

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