The two volumes that comprise this work provide a comprehensive guide and source book on the marine use of composite materials. The first volume. Fundamental Aspects, provides a rigorous development of theory. Areas covered include materials science, environmental aspects, production technology, structural analysis, finite-element methods, materials failure mechanisms and the role of standard test procedures. An appendix gives tables of the mechanical properties of common polymeric composites and laminates in marine use. The second volume, Practical Considerations, examines how the theory can be used in the design and construction of marine structures, including ships, boats, offshore structures and other deep-ocean installations. Areas covered in this second volume include design, the role of adhesives, fabrication techniques, and operational aspects such as response to slam loads and fatigue performance. The final three chapters of the book cover regulatory aspects of design, quality and safety assessment, and management and organisation. These volumes will provide an up-to-date introduction to this important and fast-growing area for students and researchers in naval architecture and maritime engineering. It will also be of value to practising engineers as a comprehensive reference book. CAMBRIDGE OCEAN TECHNOLOGY SERIES 5 General Editors: I. Dyer, R. Eatock Taylor, J. N. Newman and W. G. Price COMPOSITE MATERIALS IN MARITIME STRUCTURES Volume 2: Practical Considerations Cambridge Ocean Technology Series 1. Faltinsen: Sea Loads on Ships and Offshore Structures 2. Burcher & Rydill: Concepts in Submarine Design 3. Breslin & Andersen: Hydrodynamics of Ship Propellers 4. Shenoi & Wellicome (eds.)' Composite Materials in Maritime Structures, Volume 1, Fundamental Aspects 5. Shenoi & Wellicome (eds.): Composite Materials in Maritime Structures, Volume 2, Practical Considerations COMPOSITE MATERIALS IN MARITIME STRUCTURES Volume 2: Practical Considerations Edited by R. A. Shenoi and J. F. Wellicome Department of Ship Science, University of Southampton West E uropean G raduate E ducation Marine T echnology CAMBRIDGE UNIVERSITY PRESS CAMBRIDGE UNIVERSITY PRESS Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, Sao Paulo, Delhi Cambridge University Press The Edinburgh Building, Cambridge CB2 8RU, UK Published in the United States of America by Cambridge University Press, New York www. Cambridge. org Information on this title: www.cambridge.org/9780521451543 © Cambridge University Press 1993 This publication is in copyright. Subject to statutory exception and to the provisions of relevant collective licensing agreements, no reproduction of any part may take place without the written permission of Cambridge University Press. First published 1993 This digitally printed version 2008 A catalogue record for this publication is available from the British Library ISBN 978-0-521-45154-3 hardback ISBN 978-0-521-08994-4 paperback CONTENTS Preface xi List of Authors XIV 1 Introduction 1 (RA. Shenoi) 2 Design of Displacement Craft 3 (A.R. Dodkins) 2.1 Introduction 3 2.2 Material Selection and Testing 4 2.3 Design Criteria 9 2.4 Structural Synthesis 11 2.5 Conclusions 24 2.6 References 25 3 Design of Dynamically Supported Craft 26 (S-E. Hellbratt) 3.1 Introduction 26 3.2 Conceptual Design 26 3.3 Loadings 28 3.4 Structural Synthesis 33 3.5 Structural Analysis 35 3.6 Practical Considerations 39 3.7 Conclusion 41 3.8 References 42 4 The Role of Adhesives 43 (I.E. Winkle) 4.1 Introduction 43 4.2 Design Considerations 47 Vll Vlii CONTENTS 4.3 Adhesive Selection 50 4.4 Bonding 59 4.5 Opportunities for Application of Adhesives 61 4.6 References 62 5 Practical Design of Joints and Attachments 63 (R.A. Shenoi/G.L Hawkins) 5.1 Background 63 5.2 In-plane or Butt Joints 67 5.3 Out-of-plane Joints I: Frame-to-shell Connections 77 5.4 Out-of-plane Joints II: Bulkhead-to-shell Connections 82 5.5 Stiffener Intersections 85 5.6 References 88 6 Production of Ships with Single Skin Structures 91 (A. Bunney) 6.1 Introduction 91 6.2 Is Production the End of the Line? 92 6.3 Yard Layout 92 6.4 Construction and Outfit Berth 97 6.5 Panel Shop 105 6.6 Block Unit Hall 108 6.7 Post Launch Outfit 112 6.8 Materials Handling 112 6.9 Quality Assurance 114 6.10 Bibliography 116 7 Production of Yacht Hulls of Sandwich Configuration 117 (P. Krass) 7.1 Introduction 117 7.2 Yard Layout 117 7.3 Flat Panel Shop 119 7.4 Multi-Axis Machining or NC-Shop 120 7.5 Mould Shop 121 7.6 Laminating Shop 125 7.7 Curing Requirements 130 7.8 Erection Shop 131 7.9 Post Launch Outfit 133 7.10 Quality Assurance 133 CONTENTS ix 8 Material Case Study - Failures and their Repairs 134 (RJ. Rymill) 8.1 Introduction 134 8.2 Gel Coat Failure 134 8.3 Mechanics of Gel Coat Blistering 144 8.4 Precautions against Failure in Laminate Design 146 8.5 Core Materials for Sandwich Construction 154 8.6 Precautions against Failure in Hull Structural Design 156 8.7 Developments 159 8.8 References 159 9 Response of Sandwich Structures to Slamming and Impact Loads 161 (B. Hayman) 9.1 Introduction 161 9.2 Slamming Loads 162 9.3 Response of Sandwich Panels to Slamming Loads 165 9.4 Material Properties and Test Methods; Manufacturers' Data Sheets 169 9.5 Effect of Single and Repeated Slamming Loads on Foam Core Materials 171 9.6 Impact with Solid Objects 175 9.7 References 176 10 Fatigue Characteristics 178 (H.G. Scholte) 10.1 Introduction 178 10.2 Fatigue Mechanism in Metals 180 10.3 Fatigue Mechanism in Composite Materials 182 10.4 Fatigue Test Data 187 10.5 Fatigue Design and Damage Rules 193 10.6 Fatigue of Structures 194 10.7 Conclusions 196 10.8 References 196 11 Composites in Offshore Structures 199 (A.G. Gibson) 11.1 Background 199 11.2 Selection of Materials 200 11.3 Manufacturing Processes and Products 206
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