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The Mechanics of Adhesion, Adhesion Science and Engineering

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The Mechanics of Adhesion, Adhesion Science and Engineering

Adhesion science and technology is inherently an interdisciplinary field, requiring fundamental understanding of mechanics, surfaces, and materials, the topics emphasized in this Adhesion Science and Engineering series. This volume focuses attention on the contribution of mechanics principles and solutions to understanding the fabrication, design, analysis, and testing of adhesive bonds. Building on the fundamentals laid by such noted mechanicians as Winkler, Timoshenko, Volkersen, Goland, Reissner, Williams, Gent, and Johnson, this volume offers a comprehensive overview of the current understanding of stresses, deformation, and fracture parameters associated with a range of adhesive bonds.

Starting with a background and introduction to stress transfer principles (Chapter l), fracture mechanics and singularities (Chapter 2), and an energy approach to debonding (Chapter 3), the volume continues with analysis of structural lap (Chapter 4) and butt (Chapter 5) joint configurations. The volume continues with discussions of test methods for strength and constitutive properties (Chapter 6), fracture (Chapter 7), and peel (Chapter 8). Chapter 9 covers coatings, the case of adhesion to a single substrate, and Chapter 10 addresses elastomeric adhesives such as sealants. The role of mechanics in determining the locus of failure in bonded joints is discussed (Chapter ll), followed by a chapter on rheology relevant to adhesives and sealants (Chapter 12). Pressure sensitive adhesive performance (Chapter 13), the principles of tack and tack measurements (Chapter 14), and contact mechanics relevant to wetting and surface energy measurements (Chapter 15) are then covered. The volume concludes with sections on fibermatrix bonding and reinforcement (Chapter 16), durability considerations for adhesive bonds (Chapter 17), ultrasonic non-destructive evaluation of adhesive bonds (Chapter 18), and design of adhesive bonds from a strength perspective (Chapter 19).

The references cited in the chapters herein represent only a portion of the intense effort and contributions made by the mechanics community working in adhesion science and technology. Through compiling these important topics covered by the respective chapters, along with the surfaces and materials issues addressed in the companion volumes, the editors hope to address the need for a current and comprehensive series of books that provides an overview of this broad and interdisciplinary field. As the scientific and engineering community comes to a better understanding of the mechanics, surface, and materials issues, improved models of representing complex bonded systems will develop. Technical challenges remain for understanding how properties of the adhesive and adherends affect the performance and durability of bonded joints and structures, how designers can reliably utilize adhesive bonds in a variety of service conditions, and how mechanics’ insights can efficiently be translated into improving surfaces and adhesives. One can only wonder what new science will be developed as we move into the nanomechanics world, where the applicability of continuum mechanics becomes questionable as atomic scales are approached.

The editors of this volume would like to express sincere appreciation to each of the authors for their invaluable contributions to this volume. Their collective expertise represents many years of industrial and academic experience in the field of adhesion science and technology, and we are very grateful for the time and effort they have devoted to the task. We would also like to thank the employers of each of the contributors for allowing them to take on the added responsibilities associated with this volume. We would like to thank Mrs. Shelia L. Collins for her diligence in contacting authors, maintaining files, and assembling materials prior to publication. Assistance from the Engineering Science and Mechanics Department and Center for Adhesive and Sealant Science at Virginia Tech is specifically acknowledged. Finally, we would like to thank our wives for their patience as we compiled and edited the volume.

 

TOC

Preface .................................................................. v
Chapter 1. Fundamentals of stress transfer in bonded systems
D.A. Dillard ................................................. 1
Chapter 2. Fracture mechanics and singularities in bonded systems
K.M. Liechti ................................................. 45
Chapter 3. Energy analysis of adhesion
K. Kendall ................................................... 77
Chapter 4. Strength of lap shear joints
R.D. Adams and R.G.H. Davies ............................... 1 1 1
Chapter 5. Strength of butt and sharp-comered joints
E.D. Reedy JK ............................................... 145
Chapter 6. Mechanical testing of adhesive joints
K.L. DeVries and D.O. Adams ................................ 193
Chapter 7. Measurement and analysis of the fracture properties of adhesive
joints
M.D. Thouless and Q.D. Yang ................................ 235
Chapter 8. The mechanics of peel tests
A. J. Kinloch and J.G. Williams ................................ 273
Chapter 9. The mechanics of coatings
M. Papini and J.K. Spelt. ..................................... 303
Chapter 10. Stresses and fracture of elastomeric bonds
N. Shephard ................................................. 351
Chapter 1 1. Crack path selection in adhesively bonded joints
B. Chen and D.A. Dillard ..................................... 389
Chapter 12. Rheology for adhesion science and technology
A. Berker .................................................... 443
Chapter 13. Effect of rheology on PSA performance
D.J. Yarusso ................................................. 499
Chapter 14. Tack
C. CretonandP. Fabre ....................................... 535
Chapter 15. Contact mechanics
K.R. Shull ................................................... 577
Chapter 16. Measurement methods for fiber-matrix adhesion in composite
materials
L. 1: Drzal and P. J. Herrera-Franco ........................... 605
Chapter 17. The durability of adhesive joints
A.J. Kinloch ................................................. 661
Chapter 18. Ultrasonic inspection of adhesive bonds
J.L.. Rose .................................................... 699
Chapter 19. The design of adhesively bonded joints
L.J. Hart-Smith .............................................. 725
Author Index ............................................................. 779
Subject Index. ............................................................ 78 1