ESPRIT Project 322, "CAD Interfaces," has been established to define the most important interfaces in CAD/CAM systems for data exchange, data base, finite element analysis, experimental analysis, and advanced modeling. The definitions of these interfaces are being elaborated in harmony with international standardization efforts in this field. One principal goal of the project is to develop techniques for the exchange of CAD information between CAD systems, and from the CAD domain to CAA (Computer Aided Analysis) and CAM (Computer Aided Manufacturing). This volume presents a proposal for a neutral file format for CAD data: curves, surfaces, and solids. The specification is based on a reference schema for CAD data bases and is defined informally with respect to its semantics and formally with respect to its syntax. This volume is a revised edition of "Specification of a CAD*I Neutral File for Solids" Version 3.2. The revision reflects the enhancements which result from the implementation of communication processors in eight different CAD systems and from the practical exchange of solid models between these systems. Due to the close interaction between the CAD*I project and the coming-up international standard STEP this specification also serves as an introduction to the geometry model that will be included in the future international standard.

The importance of CAD to electronics technology Computer-aided design (CAD) is one way of coping with the problem of how to design and build very complex systems. This problem is particularly acute in electronics technology. Designs are now (1984) said to be design-limited, rather than technology-limited. It can take months to generate a design for a chip, so that it might be obsolete before it can be manufactured. Manual design of large-scale integration (LSI) chips (circa 10,000 gates) is almost impossible. However, using current technology it is possible to produce chips having 250,000 gates. It is understandable, therefore, that there is great interest in improving existing CAD systems. Designers of CAD systems are concerned with formalizing and automating as much of the design task as possible. Automating design of any kind has long been acknowledged as a project fraught with intractable problems. A human designer has to have an understanding of the nature of the materials used in manufacture, a knowledge of common problems and well-tried solutions, and above all, creativity in producing new designs. Understanding, knowledge and creativity are three properties even the most artificially intelligent of computer programs have been entirely lacking in until very recently. Some people would deny computers these qualities entirely, on philosophical grounds (eg Dreyfus 1979; Searle 1981). There are few theories in cognitive psychology which can help.

Computer Aided Design (CAD) and Computer Aided Manufacture (CAM) are but two of the more recent examples of computer applications in domains previously dominated by human labour. The use of computers in such areas has increasingly attracted social science research. There are several reasons one could suggest for this, not least of them being the simple fact that public money is being provided for such research. Of course, some of the interest may be due to the wish to prove that technology is being used to inhuman ends, but undoubtedly there is also some degree of fascination involved. Can you really do all the things with computers that people claim you can? There is certainly satisfaction to be had from smugly pointing out its shortcomings, but many of the few sociologists in our own organisation are also among the most avid users of modern technology. Needless to say, they also belong to the most critical users of the technology! A new strain of motivation for social science research which appears to be gaining significance, is the desire to "re-direct" technology, or at least - and probably more realistically - to playa part in shaping future technology . The entire range of motives may be recognised in the collection of papers contained in this volume.

This book covers a variety of topics in the field of industrial engineering, with a special focus on research and industrial applications aimed at both improving quality of processes and products and contributing to a sustainable economy. Based on a set of papers presented at the 1st International Conference "Innovation in Engineering", ICIE, held in Guimaraes, Portugal, on June 28-30, 2021, it focuses on innovative technologies associated with and strategies for the development of Industry 4.0. The chapters discuss new ways to improve industrial production and supply chain management by applying mathematical and computational methods. They also cover important issues relating to sustainability, education, and collaborations between industry and universities, and national developments. This book, which belongs to a three-volume set, provides engineering researchers and professionals with a timely overview and extensive information on trends and technologies behind the current and future developments of Industry 4.0.

In the past several years, it has become apparent that computing will soon achieve a status within science and engineering to the classical scientific methods of laboratory experiment and theoretical analysis. The foremost tools of state-of-the-art computing applications are supercomputers, which are simply the fastest and biggest computers available at any given time. Supercomputers and supercomputing go hand-in-hand in pacing the development of scientific and engineering applications of computing. Experience has shown that supercomputers improve in speed and capability by roughly a factor 1000 every 20 years. Supercomputers today include the Cray XMP and Cray-2, manufactured by Cray Research, Inc., the Cyber 205, manufactured by Control Data Corporation, the Fujitsu VP, manufactured by Fujitsu, Ltd., the Hitachi SA-810/20, manufactured by Hitachi, Ltd., and the NEC SX, manufactured by NEC, Inc. The fastest of these computers are nearly three orders-of-magnitude faster than the fastest computers available in the mid-1960s, like the Control Data CDC 6600. While the world-wide market for supercomputers today is only about 50 units per year, it is expected to grow rapidly over the next several years to about 200 units per year.

This book is the sixth issue in the EurographicSeminars Series. This series has been set up by Eurographics, the European Association for Computer Graphics, in order to disseminate surveys and research results out of the field of Computer Graphics. Computer Graphics constitute a powerful and versatile tool for various application areas. The rapidly increasing use of Computer Graphics techniques and systems in many areas is caused by the availability of more powerful hardware at lower prices, ' by the concise specification of Computer Graphics Interfaces in commonly..agreed standards, and by the inven tion of new and often astonishing methods and algorithms for com position andpreserit ti6n of pictJres and for graphical interaction. While s, o e issues of this se.ries contain latest research results, e.g. the issues in window management systems or user interface manage ment systems, this book has the character of a state-of-the-art survey on important areas .of Computer Graphics. Starting from current practice and agreed consens, it will lead to the latest achievements in this field. The contributions in this issue are largely based on tutorials and seminars held at the Eurographics conferences 1984 in Copen hagen and 1985 in Nice."

E-maintenance is the synthesis of two major trends in today's society: the growing importance of maintenance as a key technology and the rapid development of information and communication technology. E-maintenance gives the reader an overview of the possibilities offered by new and advanced information and communication technology to achieve efficient maintenance solutions in industry, energy production and transportation, thereby supporting sustainable development in society. Sixteen chapters cover a range of different technologies, such as: new micro sensors, on-line lubrication sensors, smart tags for condition monitoring, wireless communication and smart personal digital assistants. E-maintenance also discusses semantic data-structuring solutions; ontology structured communications; implementation of diagnostics and prognostics; and maintenance decision support by economic optimisation. It includes four industrial cases that are both described and analysed in detail, with an outline of a global application solution. E-maintenance is a useful tool for engineers and technicians who wish to develop e-maintenance in industrial sites. It is also a source of new and stimulating ideas for researchers looking to make the next step towards sustainable development.

Dieser Band enthalt die schriftlichen Beitrage zu den Fachgesprachen, die wahrend der 14. Jahrestagung der Gesellschaft fUr Informatik in Braunschweig veranstaltet wurden. Die Beitrage zum Hauptprogramm werden in einem gleichzeitig in derselben Reihe erscheinenden separaten Ta- gungsband verbffentlicht. Die 14. Jahrestagung der Gesellschaft fUr Informatik steht unter dem Leitthema "Informatik und Ingenieurwissenschaften" Daran orientieren sich auch die hier verbffentlichten Fachgesprache. Der FachausschuB 4.2 der GI, "RechnergestUtztes Entwerfen und Projektieren", ist mit zwei Fachgesprachen vertreten: "Produktdefinierende Daten" (Ko- ordinator: R.Gnatz) und "Methoden der Evaluierung und EinfUhrung von CAD-Systemen" (Koordinator: J.Encarnacao). Der FachausschuB 1.1, "Grund- lagen der Informatik", behandelt aktuelle "Grundlagen der GroBtintegra- tion (VLSI)" (Koordinator: K.Mehlhorn), und die Fachgruppe "Robotik" im FachausschuB 1.2, "KUnstliche Intelligenz und Mustererkennung", be- schaftigt sich in ihrem Fachgesprach mit dem Thema "Industrieroboter und KUnstliche Intelligenz" (Koordinator: G.Hirzinger). Den Koordinatoren, Mitveranstaltern und Mitgliedern der ProgrammausschUs- se der einzelnen Fachgesprache danke ich herzlich fUr ihre MUhe bei de- ren Planung, Organisation und DurchfUhrung.

Derzeit verfugbare "universelle" Datenbanksysteme sind historisch fur betriebswirt- schaftliche Anwendungen entst&lden. In Anwendungsgebieten wie der Unterstutzung von Burotatigkeiten oder der rechnergestutzten Konstruktion und Fertigung (CAD/CAM - CIM) stossen sie daher vielfach Rn die Grenzen ihrer Fahigkeiten. Diese Tatsache spiegelt sich wider in dem angelsachsis,;hen Schlagwort "non-standard date base applications", was sich vielleicht mit "nicht-konventionelle Datenbank-Anwendungen" wiedergeben lasst. Fur derartige Anwendungen werden immer haufiger neuartige DB-Systeme gefordert. Die Datenbank-Forschung griff diese Problematik schon vor einigen Jahren verstarkt auf. Das lasst sich belegen durch das Fachgesprach Datenbanken der GI -Jahrestagung 1983, aber auch durch so renommierte internationale Konferenzen wie SIGMOD '84 oder VLDB84 , bei denen sich etwa 50 % der Beitrage mit Datenbank-Problemen beschaftigten, die sich durch Anwendungen in Buro, Technik und Wissenschaft stellen. Unter diesen Umstanden hielt es der Fachausschuss 2.5 "Rechnergestutzte Informations- systeme" der Gesellschaft fur Informatik fur angebracht, eine Fachtagung eigens uber Datenbanksysteme fur die Unterstutzung von Burotatigkeiten und fur technisch-wissen- schaftliche Anwendungen auszurichten. Die erfreulich grosse Resonanz, die der Aufruf zu Tagungsbeitragen fand, hat diese Einschatzung bestatigt. Es ist den Veranstaltern ein Bedurfnis, an dieser Stelle den vielen Autoren zu danken, die durch ihre einge~ reichten Beitrage die Bedeutung der Thematik unterstrichen haben, und zwar ausdrucklich auch denen, deren Beitrage nicht im Tagungsprogramm erscheinen. In den meisten Fallen ist der Grund dafur nicht die mangelnde Qualitat, sondern der Zwang zur zeitlichen und thematischen Konzentration, der die Organisatoren vor die Qual der Wahl stellte.

Master the complexities of the world's bestselling 2D and 3D software with Introduction to AutoCAD 2017. Ideally suited to new users of AutoCAD, this book will be a useful resource for drawing modules in both vocational and introductory undergraduate courses in engineering and construction. A comprehensive, step-by-step introduction to the latest release of AutoCAD. Covering all the basic principles and acting as an introduction to 2D drawing, it also contains extensive coverage of all 3D topics, including 3D solid modelling and rendering. Written by a member of the Autodesk Developer Network. Hundreds of colour pictures, screenshots and diagrams illustrate every stage of the design process. Worked examples and exercises provide plenty of practice material to build proficiency with the software. Further education students will find this an invaluable textbook for City & Guilds AutoCAD qualifications as well as the relevant Computer Aided Drawing units of BTEC National Engineering, Higher National Engineering and Construction courses from Edexcel. Students enrolled in Foundation Degree courses containing CAD modules will also find this a very useful reference and learning aid.

Your real-world introduction to mechanical design with Autodesk Inventor 2016 Mastering Autodesk Inventor 2016 and Autodesk Inventor LT 2016 is a complete real-world reference and tutorial for those learning this mechanical design software. With straightforward explanations and practical tutorials, this guide brings you up to speed with Inventor in the context of real-world workflows and environments. You'll begin designing right away as you become acquainted with the interface and conventions, and then move into more complex projects as you learn sketching, modeling, assemblies, weldment design, functional design, documentation, visualization, simulation and analysis, and much more. Detailed discussions are reinforced with step-by-step tutorials, and the companion website provides downloadable project files that allow you to compare your work to the pros. Whether you're teaching yourself, teaching a class, or preparing for the Inventor certification exam, this is the guide you need to quickly gain confidence and real-world ability. Inventor's 2D and 3D design features integrate with process automation tools to help manufacturers create, manage, and share data. This detailed guide shows you the ins and outs of all aspects of the program, so you can jump right in and start designing with confidence. * Sketch, model, and edit parts, then use them to build assemblies * Create exploded views, flat sheet metal patterns, and more * Boost productivity with data exchange and visualization tools * Perform simulations and stress analysis before the prototyping stage This complete reference includes topics not covered elsewhere, including large assemblies, integrating other CAD data, effective modeling by industry, effective data sharing, and more. For a comprehensive, real-world guide to Inventor from a professional perspective, Mastering Autodesk Inventor 2016 and Autodesk Inventor LT 2016 is the easy-to-follow hands-on training you've been looking for.

Bei den Entwurfstatigkeiten lassen sich bezUglich der graphischen EDV-Unter stUtzung zwei Bereiche mit unterschiedlichen Anforderungen abgrenzen: (1) der gestalterische Entwurf, bei dem die Geometrie eines Objektes oder Systems festgelegt wird und (2) der funktionale Entwurf, bei dem es um die VerknUpfung von Elementen zu einem System (Objekt) geht. Wichtigste Informationstrager und Mittel der Informationsdarstellung sind in beiden Bereichen leichnungen: beim gestalterischen Entwurf die maBstabsgerechte technische leichnung, beim funktionalen Entwurf verschiedene Arten von Blockdiagrammen. Dieser Aufsatz befaBt sich mit der EDV - UnterstUtzung des zweiten Bereiches insbesondere durch interaktive graphische Verfahren und Datenbanktechniken. 2. Anforderungen an ein CAD - System fUr den funktionalen Entwurf Ein EDV-System zur UnterstUtzung des funktionalen Entwurfs /1/ sollte dem Anwender eine gewohnte und bewahrte Schnittstelle bieten: die Darstellung der Informationen ( d.h. des funktionalen Modells) durch Blockdiagramme und ihre Manipulation mit problemangepaBten Operationen. Diese Forderungen werden zum Teil erfUllt durch all gemei ne rechnergestUtzte lei chensysteme oder besser durch lei chensysteme fUr Blockdiagramme /2,3/. Diese unterscheiden sich von allgemeinen leichensystemen durch di e Beschrankung der mogl ichen Operati onen auf das Ei nfUgen/Loschen von Symbol en und deren Verbindung durch Linien, die nur an vorgegebene SymbolanschlUsse herangefUhrt werden konnen. Den Symbol en konnen auBer den AnschluBpunkten im allgemeinen auch noch Texte als Attribute zugeordnet werden."

Beginning AutoCAD 2007 is a course based on learning and practising the essentials of 2D drawing using AutoCAD. Bob McFarlane's hands-on approach is uniquely suited to independent learning and use on courses. The focus on 2D drawing in one book ensures the reader gets a thorough grounding in the subject, with a greater depth of coverage than tends to be available from general introductions to AutoCAD. As a result, this book provides a true, step-by-step, detailed exploration of the AutoCAD functions required at each stage of producing a 2D drawing - an approach often not found in the many software reference guides available. The emphasis on learning through doing makes this book ideal for anyone involved in engineering, construction or architecture - where the focus is on productivity and practical skills. The author has also matched the coverage to the requirements of City and Guilds, Edexcel (BTEC) and SQA syllabuses. The following new features in AutoCAD 2007 are covered in this book: * Create: Using enhanced commands and draughting tools to create all types of content * Manage: Using the Sheet Set Manager and Attribute Extraction to manage data and information * Produce: Using dynamic blocks, dynamic input and selection preview to increase productivity * Share: Using e-transmit, publish to the web and PDF files to share information Plus, a new companion website features AutoCAD files for selected activities for students to work with. The result is a useful refresher course for anyone using AutoCAD at this level, and those upgrading to the new software release. The course is also designed to be fully relevant to anyone using other recent releases, including AutoCAD 2006. ABOUT THE AUTHOR Bob McFarlane has been writing books on AutoCAD for over 10 years.

Engineering Drawing with CAD Applications is ideal for any engineering student, needing a user-friendly step-by-step guide to draughting, sketching and drawing. Fully revised to take into account developments in computer aided drawing, and to keep up with British Standards, this guide remains an ideal introduction to the subject. It provides readers with the basic knowledge and skills of draughting and takes them on to more interesting and advanced engineering drawing techniques and procedures. This latest revision of Ostrowsky's popoular Engineering Drawing represents a comprehensive introductory course in engineering drawing and sketching, and is sutiable for a wide range of college and university engineering students. The author concentrates on the techniques fundamental to effective drawing, key knowledge that is needed wether the drawings are carried out by hand, or via a CAD package. Copious illustrations and a clear, step-by-step approach make this book ideal for distance learning and assignment-based study.

AutoCAD 2015 for Interior Design and Space Planning helps students understand the commands and features of AutoCAD 2015 and demonstrates how to use the program to complete interior design and space planning projects. Covering both two- and three-dimensional drawings, the text provides abundant exercises that walk students step-by-step through the use of AutoCAD prompts and commands. Using numerous illustrations, the text captures the essence of this powerful program and the importance it plays in the interior design, architecture and space planning professions. Features include: * Covers new AutoCAD 2015 interface * Progresses from basic commands to complex drawing exercises. * Provides over 100 exercises and projects. * Highlights seven projects appropriate for interior design, space planning and architecture students. * Includes coverage of the AutoCAD DesignCenter * Covers solid modeling in two chapters

The best-selling Revit guide, now more complete than ever with all-new coverage on the 2020 release Mastering Autodesk Revit 2020 is packed with focused discussions, detailed exercises, and real-world examples to help you get up to speed quickly on the latest version of Autodesk Revit. Organized according to how you learn and implement the software, this book provides expert guidance for all skill levels. Hands-on tutorials allow you to dive right in and start accomplishing vital tasks, while compelling examples illustrate how Revit for Architecture is used in every project. Available online downloads include before-and-after tutorial files and additional advanced content to help you quickly master this powerful software. From basic interface topics to advanced visualization techniques and documentation, this invaluable guide is your ideal companion through the Revit workflow. Whether you're preparing for Autodesk certification exams or just want to become more productive with the architectural design software, practical exercises and expert instruction will get you where you need to be. Understand key BIM and Revit concepts and master the Revit interface Delve into templates, work-sharing, and managing Revit projects Master modeling and massing, the Family Editor, and visualization techniques Explore documentation, including annotation, detailing, and complex structures BIM software has become a mandatory asset in today's architecture field; automated documentation updates reduce errors while saving time and money, and Autodesk's Revit is the industry leader in the BIM software space.

This book introduces the applications of Industry 4.0 in machine tools through an overview of the latest available digital technologies. It focuses on digital twining, communication between industrial controls, motion, and input/output devices, along with sustainability in SMEs. Machine Tools: An Industry 4.0 Perspective focuses on the digital twining of machine tools, which improves the life of the machines and provides a method of operating a factory during times of complete lockdown resulting from various conditions. It presents an overview of the communication between industrial controls, motion, and input/output devices through standardized digital interfaces such as SERCOS and USB. The book goes on to discuss industrial cybersecurity systems applicable to discrete manufacturing, which includes cyberattacks and human errors, and address the security aspects related to software, hardware, and data. The book also explores the application of big data for different stages of production and illustrates the uses such as predictive maintenance, product quality, product life cycle management (PLM), and more. This book is an ideal reference for undergraduate, graduate, and postgraduate students of industrial, mechanical, and mechatronics engineering, along with professionals, and general readers.

Designed for introductory AutoCAD users, Discovering AutoCAD 2020 presents a hands-on, activity-based approach to the use of AutoCAD 2020 as a drafting tool-complete with techniques, tips, shortcuts, and insights that improve efficiency. Topics and tasks are carefully grouped to lead students logically through the AutoCAD command set, with the level of difficulty increasing steadily as skills are acquired through experience and practice. Straightforward explanations focus on what is relevant to actual drawing procedures, and illustrations show exactly what to expect on the computer screen. This edition features updates for the latest release of AutoCAD 2020, projects, and test questions for each chapter. Lessons are broken down into tasks listed at the beginning of each section, introducing students to the AutoCAD commands using a structured, intuitive approach and helping students anticipate what information will be needed at each new phase of the learning process. General Procedure boxes appear as new commands are introduced, providing a simple overview of basic command sequences in a step-by-step format. Detailed graphics appear throughout the text, demonstrating what students should expect to see on their screens and encouraging self-paced study. Drawing problems appear at the end of each chapter, helping students apply newly learned techniques immediately to realistic drawing situations. This includes drawing suggestions, timesaving tips, and explanations of how to use techniques in actual situations. Working drawings accompany the end-of-chapter drawing problems, appearing in a large, clearly dimensioned format on each right-hand page, with drawing suggestions on the accompanying left-hand page. This includes mechanical, architectural, civil, and electrical drawings. End-of-chapter review questions to test the student's knowledge. Discovering AutoCAD 2020 will be a valuable resource for any student wanting to learn drafting skills.

The book comprehensively discusses principles, techniques, research activities, applications and case studies of computer-aided design in a single volume. The textbook will serve as ideal study material for undergraduate, and graduate students in a multitude of engineering disciplines. The book * Discusses techniques for wireframe, surface and solid modelling including practical cases and limitations. * Each chapter contains solved examples and unsolved exercises. * Includes research case studies and practical examples in enabling the user to link academic theory to engineering practice. * Highlights the ability to convert graphic to non-graphic information such as in drawing up bills of materials in practice. * Discusses important topics including constructive solid geometry, Boolean operations on solid primitives and Boolean algebra. This text covers different aspects of computer-aided design, from the basic two-dimensional constructions through modifications, use of layers and dimensioning to advanced aspects such as three-dimensional modelling and customization of the package to suit different applications and disciplines. It further discusses important concepts including orthographic projections, isometric projections, 3D wireframe modelling, 3D surface modelling, solids of extrusion and solids of revolution. It will serve as ideal study material for undergraduate, and graduate students in the fields of mechanical engineering, industrial engineering, electrical and electronic engineering, civil and construction engineering, aerospace engineering and manufacturing engineering.

This introduction to descriptive geometry and contemporary drafting guides the student through the essential principles to create engineering drawings that comply with international standards of technical product specification. This heavily updated new edition now applies to CAD as well as conventional drawing. Extensive new coverage is given of:

• International drafting conventions

• Methods of spatial visualisation such as multi-view projection

• Types of views

• Dimensioning

• Dimensional and geometric tolerancing

• Representation of workpiece and machine elements

• Assembly drawings

Comprehensible illustrations and clear explanations help the reader master drafting and layout concepts for creating professional engineering drawings. The book provides a large number of exercises for each main topic. This edition covers updated material and reflects the latest ISO standards.

It is ideal for undergraduates in engineering or product design, students of vocational courses in engineering communication and technology students covering the transition of product specification from design to production.

Table of Contents

1. Introduction to Engineering Communication

2. Fundamentals of Engineering Drawing

3. Geometric Constructions

4. Methods of Spatial Visualisation

5. Basic Concepts of Descriptive Geometry

6. Views

7. Dimensioning

8. Tolerancing

9. Representation of Workpiece Elements

10. Representation of Machine Elements

11. Assembly Drawings

12. Some More Problems Solved by Drawing

Appendix A. ISO Standards Mentioned in this Book

Appendix B. Representation of Threaded Fasteners

Die hervorragende Aufnahme, die dieses inzwischen als Standardwerk etablierte Buch insbesondere in der Praxis gefunden hat zeigt, dass es dem Autor gelungen ist, einen umfassenden UEberblick uber die neuesten Entwicklungen im Produktionssektor zu geben. Aus den Besprechungen: Wer sich in das Thema CIM einlesen moechte, aber auch wer seine eigene Kenntnis und Meinung hierzu durch Lekture einer systematischen, leicht verstandlichen Gesamtdarstellung abrunden moechte, wird dieses Buch mit Gewinn lesen. Frankfurter Allgemeine Zeitung

Focuses on Design of Experiment based computational models which involves finite element analysis along with ergonomic based design of tooling (for both conventional and unconventional manufacturing processes) Directed towards smart manufacturing, this book outlines 4D solutions for 3D printed parts actuated through stimulus such as heat, light, chemical processing Acts as a first-hand source of information for academic scholars and commercial manufacturers while assisting in making strategic manufacturing development plans Discusses work and development in the field of product manufacturing of any mechanical system. Provides case studies and solved numerical solutions at the end of each chapter for easy reader comprehension