Design
A typical joint cross-section is shown in Figure 2.1, where a clear distinction is made between the bulk of the adherends and their surfaces. Chapter 4 discusses the importance and nature of a component’s surface and methods of improving its structural st
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Springer-Verlag Berlin Heidelberg GmbH
Adhesives in Engineering Design
W. A. Lees
First edition pubJished 1984 by The Design Council 28 Haymarket London SWIY 4SU
© W. A. Lees 1984
Originally published by Springer-Verlag Berlin Heidelberg New York Tokyo in 1984 Softcover reprint ofthe hardcover lst edition 1984 AII rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, record ing or otherwise, without the prior permission ofThe Design Counci!. Typeset by Apex Computersetting, London
British Library CIP Data Lees, W. A. Adhesives in engineering design. 1. Adhesives 1. TitIe 620.1'99 TA455.A34 ISBN 978-3-662-1 1034-8 ISBN 978-3-662-11032-4 (eBook) DOI 10.1007/978-3-662-11032-4
Contents
Acknowledgements Introduction
v Vll
1
Adhesives - their use and function
1
2
Design
4
Illustrations
58
The special role of anaerobic adhesives in mechanical engineering
70
4
Surface preparation
81
5
Adhesive selection
92
6
Performance assessment
124
7
Manufacturing problems
127
3
Appendixl
Fundamental aspects of adhesion
129
by K. W. Allen MSc CChem FRSC MlnstP FPRI Director of Adhesion Studies, The City University, London Appendix 2
A guide to the resistance of anaerobic adhesives to corrosive and aggressive media
140
Appendix 3
Unit conversion
142
Index
143
Acknowledgements
The author wishes to thank the management and staff of Permabond Adhesives Ltd for their unfailing support during the preparation of this book. The assistance given by colleagues in National Adhesives and Resins Ltd during the checking of documents proved to be invaluable and was greatly appreciated. Finally, the encouragement and help given so freely by Mr E. Ross, Engineer, during the preparation and checking of the manuscript must also be acknowledged. May I thank you all.
WA. Lees Eastleigh, August 1984
v
The ECV 3 is probably one of the most innovative cars ever built. A significant and unique feature is its aluminium monocoque body which relies entirely on a toughened epoxy-based adhesive for its structural integrity. (Photograph courtesy BL Technology Ltd ; adhesive supplied by Permabond Adhesives Ltd.)
VI
Introduction
The possible use of adhesives in a new design should always be considered because of the economic and technical benefits thatthey can confer. Light, stiff and economic structures, free of the blemishes caused by conventional assembly methods, can be fabricated from a variety of materials in combinations which would otherwise be hard to achieve. Similarly, mechanisms may be built up using bonding techniques which are free of the costs and stresses implicit in press fitting. Adhesives are not a panacea, but they do have a great deal to offer as is shown by the vital role they play in modern production engineering. Yet, despite this, they are not generally regarded with enthusiasm by engineers and designers. The reason for this is not hard to find. There are so many adhes
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