The selection of the proper materials for a structural component is a critical activity that is governed by many, often conflicting factors. Incorporating materials expert systems into CAD/CAM operations could assist designers by suggesting potential manufacturing processes for particular products to facilitate concurrent engineering, recommending various materials for a specific part based on a given set of characteristics, or proposing possible modifications of a design if suitable materials for a particular part do not exist. This book reviews the structural design process, determines the elements, and capabilities required for a materials selection expert system to assist design engineers, and recommends the areas of expert system and materials modeling research and development required to devise a materials-specific design system.
- Computer-Aided Materials Selection During Structural Design
- Copyright
- Abstract
- Acknowledgments
- Preface
- Contents
- Executive Summary
- VISION OF A COMPUTER-AIDED MATERIALS SELECTION SYSTEM
- STRATEGIES FOR OVERCOMING BARRIERS
- Database and Knowledge-Base Barriers
- Structural Design Modeling Technology Barriers
- GENERAL CONCLUSIONS AND RECOMMENDATIONS
- 1 Introduction
- BENEFITS
- DEFINITIONS
- STUDY OBJECTIVES AND SCOPE
- 2 Materials Selection in Structural Design
- CONCURRENT ENGINEERING AND DESIGN ORGANIZATION
- MATERIALS SELECTION DURING COMPUTER-AIDED DESIGN
- SUMMARY OF MATERIALS INFORMATION REQUIREMENTS IN DESIGN
- 3 Enhancing the Materials Selection Process in Design: A Vision
- INTEGRATED ENGINEERING SUPPORT IN INTEGRATED ENTERPRISES
- SUPPORTING STRATEGIC MATERIAL DECISIONS
- SUPPORTING ROUTINE MATERIAL DECISIONS
- SUPPORTING INNOVATIVE MATERIALS SELECTION IN DESIGN
- SUMMARY
- 4 Information Technologies Pertinent to the Materials Selection Process
- DATABASES AND KNOWLEDGE BASES
- Levels of Representation
- Issues Concerning Knowledge-Base Development
- Definition of Knowledge Bases
- Development of Knowledge Bases
- Construction of Knowledge Bases
- Issues Concerning Database Development
- MODELING AND ANALYSIS SYSTEMS
- Geometric Reasoning
- Process Modeling
- Modeling of Abstraction of Downstream Constraints
- Measurement Modeling
- Quantitative Nondestructive Evaluation
- Damage-Tolerant Design
- Probability of Detection
- Issues Concerning Implementing Modeling and Analysis Systems
- 5 Conclusions and Recommendations
- STRATEGIES FOR OVERCOMING BARRIERS
- Database and Knowledge-Base Barriers
- Structural Design Modeling Technology Barriers
- GENERAL CONCLUSIONS AND RECOMMENDATIONS
- References
- Appendix A: Glossary of Acronyms
- Appendix B: Case Studies Reviewed by the Committee
- Appendix C: Review of Selected Knowledge-Representation Techniques and Tools
- CASE-BASED REASONING
- CONSTRAINT-BASED REASONING
- ACTIVE DATA DICTIONARIES
- DATABASES
- FUZZY LOGIC
- GEOMETRIC AND MICROSTRUCTURAL INFORMATION REPRESENTATION
- HYPERDOCUMENTS
- MACHINE LEARNING
- MATHEMATICAL RELATIONS
- NEURAL NETWORKS
- OBJECTS AND TAXONOMIES
- REASONING WITH UNCERTAINTY
- RULE-BASED REASONING
- SPATIAL SYNTHESIS AND LAYOUT
- STRUCTURE SELECTION
- TRUTH MAINTENANCE
- Appendix D: Knowledge-Based Integrated Design System
- INTRODUCTION
- THE CASE STUDY
- Appendix E: An Intelligent Knowledge System for Selection of Materials for Critical Aerospace Applications
- INTRODUCTION
- VISION OF THE SYSTEM
- TECHNOLOGIES INCLUDED IN THE SYSTEM
- Conceptual Model of an Intelligent-Knowledge-System
- IKSMAT Architecture and Operating Capabilities
- STATUS OF DEVELOPMENT AND BARRIERS TO IMPLEMENTATION
- Knowledge Base/Database Content Development
- IKSMAT Design
- Programming
- Electronic Data Acquisition and Loading
- METHODS TO OVERCOMING BARRIERS
- Appendix F: Biographical Sketches of Committee Members
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