Materials Information
for CAD/CAM

Philip Sargent

University of Cambridge
Cambridge, UK

Preface
Preface to the HTML Edition
1 Introduction and reader's guide
2 Materials selection
3 Representing information
4 Data interchange technologies
5 Decisions and selection
6 Information quality
7 Knowledge-based systems
8 CAD/CAM environments
Glossary
References
Index

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Contents

Preface

Preface to the HTML Edition

1 Introduction and reader's guide 1

Materials and design 2
Design and manufacture 2
How this book is organized 4

2 Materials selection 7

Introduction 7
Practical issues 8
Concurrent engineering 10
Data for design 12
The Ashby methods 15
Five more techniques 19
Selection extends over time 23
From data to information 26

3 Representing information 29

Representation and integration 29
Materials information 30
Relationships and adequacy 40
Naming and meaning 51
Information resource dictionaries 55
McCarthy's data thesaurus 57

4 Data interchange technologies 59

Background 60
Item based formats 65
Table based formats 72
Conclusions on format types 74
History of data interchange 75
CALS and SGML 76
Techno-economic materials data 77
Open distributed processing 77

5 Decisions and selection 79

Background 79
The selection problem 81
Theorems and pitfalls 85
Materials selection 98
Proposal 106
Summary 108

6 Information quality 109

Background 109
Quality and data interchange 114
Survey of studies of data quality 115
Data quality levels 120
Data reporting and identification 125
Quality indicators 126
Organizations, staff and procedures 127
Conclusions on information quality 129

7 Knowledge-based systems 131

Introduction 131
Models: types of expert system 133
Fragility 135
Tutorial systems 135
Big systems 136
The future 139

8 CAD/CAM environments 141

Introduction 141
Trends in design environments 142
Capricious and stable information 149
Creating information components 151
Foretelling the future 152

Glossary 155

References 157

Index 165

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