Springer Handbook of Experimental Solid Mechanics

Download Springer Handbook of Experimental Solid Mechanics PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 0387268839
Total Pages : 1100 pages
Book Rating : 4.3/5 (872 download)

DOWNLOAD NOW!


Book Synopsis Springer Handbook of Experimental Solid Mechanics by : William N. Sharpe, Jr.

Download or read book Springer Handbook of Experimental Solid Mechanics written by William N. Sharpe, Jr. and published by Springer Science & Business Media. This book was released on 2008-12-04 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Springer Handbook of Experimental Solid Mechanics documents both the traditional techniques as well as the new methods for experimental studies of materials, components, and structures. The emergence of new materials and new disciplines, together with the escalating use of on- and off-line computers for rapid data processing and the combined use of experimental and numerical techniques have greatly expanded the capabilities of experimental mechanics. New exciting topics are included on biological materials, MEMS and NEMS, nanoindentation, digital photomechanics, photoacoustic characterization, and atomic force microscopy in experimental solid mechanics. Presenting complete instructions to various areas of experimental solid mechanics, guidance to detailed expositions in important references, and a description of state-of-the-art applications in important technical areas, this thoroughly revised and updated edition is an excellent reference to a widespread academic, industrial, and professional engineering audience.

Springer Handbook of Experimental Fluid Mechanics

Download Springer Handbook of Experimental Fluid Mechanics PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 3540251413
Total Pages : 1570 pages
Book Rating : 4.5/5 (42 download)

DOWNLOAD NOW!


Book Synopsis Springer Handbook of Experimental Fluid Mechanics by : Cameron Tropea

Download or read book Springer Handbook of Experimental Fluid Mechanics written by Cameron Tropea and published by Springer Science & Business Media. This book was released on 2007-10-09 with total page 1570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying DVD-ROM contains ... "all chapters of the Springer Handbook."--Page 3 of cover.

Springer Handbook of Mechanical Engineering

Download Springer Handbook of Mechanical Engineering PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 3540491317
Total Pages : 1588 pages
Book Rating : 4.5/5 (44 download)

DOWNLOAD NOW!


Book Synopsis Springer Handbook of Mechanical Engineering by : Karl-Heinrich Grote

Download or read book Springer Handbook of Mechanical Engineering written by Karl-Heinrich Grote and published by Springer Science & Business Media. This book was released on 2009-01-13 with total page 1588 pages. Available in PDF, EPUB and Kindle. Book excerpt: This resource covers all areas of interest for the practicing engineer as well as for the student at various levels and educational institutions. It features the work of authors from all over the world who have contributed their expertise and support the globally working engineer in finding a solution for today‘s mechanical engineering problems. Each subject is discussed in detail and supported by numerous figures and tables.

Experimental Solid Mechanics

Download Experimental Solid Mechanics PDF Online Free

Author :
Publisher :
ISBN 13 : 9781935673194
Total Pages : 688 pages
Book Rating : 4.6/5 (731 download)

DOWNLOAD NOW!


Book Synopsis Experimental Solid Mechanics by : Arun Shukla

Download or read book Experimental Solid Mechanics written by Arun Shukla and published by . This book was released on 2017-02-13 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: The text is intended for upper-division undergraduate students or graduate students beginning to study experimental methods. The book reflects many of the changes in experimental mechanics that have occurred during the past decade. A significant amount of new content has been added by expanding existing chapters.

Experimental Mechanics

Download Experimental Mechanics PDF Online Free

Author :
Publisher : Springer Nature
ISBN 13 : 3030894665
Total Pages : 318 pages
Book Rating : 4.0/5 (38 download)

DOWNLOAD NOW!


Book Synopsis Experimental Mechanics by : Emmanuel E. Gdoutos

Download or read book Experimental Mechanics written by Emmanuel E. Gdoutos and published by Springer Nature. This book was released on 2021-11-15 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents in a clear, simple, straightforward, novel and unified manner the most used methods of experimental mechanics of solids for the determination of displacements, strains and stresses. Emphasis is given on the principles of operation of the various methods, not in their applications to engineering problems. The book is divided into sixteen chapters which include strain gages, basic optics, geometric and interferometric moiré, optical methods (photoelasticity, interferometry, holography, caustics, speckle methods, digital image correlation), thermoelastic stress analysis, indentation, optical fibers, nondestructive testing, and residual stresses. The book will be used not only as a learning tool, but as a basis on which the researcher, the engineer, the experimentalist, the student can develop their new own ideas to promote research in experimental mechanics of solids.

Continuum Damage Mechanics

Download Continuum Damage Mechanics PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 9400726651
Total Pages : 420 pages
Book Rating : 4.4/5 (7 download)

DOWNLOAD NOW!


Book Synopsis Continuum Damage Mechanics by : Sumio Murakami

Download or read book Continuum Damage Mechanics written by Sumio Murakami and published by Springer Science & Business Media. This book was released on 2012-02-24 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in engineering and technology have brought about serious and enlarged demands for reliability, safety and economy in wide range of fields such as aeronautics, nuclear engineering, civil and structural engineering, automotive and production industry. This, in turn, has caused more interest in continuum damage mechanics and its engineering applications. This book aims to give a concise overview of the current state of damage mechanics, and then to show the fascinating possibility of this promising branch of mechanics, and to provide researchers, engineers and graduate students with an intelligible and self-contained textbook. The book consists of two parts and an appendix. Part I is concerned with the foundation of continuum damage mechanics. Basic concepts of material damage and the mechanical representation of damage state of various kinds are described in Chapters 1 and 2. In Chapters 3-5, irreversible thermodynamics, thermodynamic constitutive theory and its application to the modeling of the constitutive and the evolution equations of damaged materials are descried as a systematic basis for the subsequent development throughout the book. Part II describes the application of the fundamental theories developed in Part I to typical damage and fracture problems encountered in various fields of the current engineering. Important engineering aspects of elastic-plastic or ductile damage, their damage mechanics modeling and their further refinement are first discussed in Chapter 6. Chapters 7 and 8 are concerned with the modeling of fatigue, creep, creep-fatigue and their engineering application. Damage mechanics modeling of complicated crack closure behavior in elastic-brittle and composite materials are discussed in Chapters 9 and 10. In Chapter 11, applicability of the local approach to fracture by means of damage mechanics and finite element method, and the ensuing mathematical and numerical problems are briefly discussed. A proper understanding of the subject matter requires knowledge of tensor algebra and tensor calculus. At the end of this book, therefore, the foundations of tensor analysis are presented in the Appendix, especially for readers with insufficient mathematical background, but with keen interest in this exciting field of mechanics.

Handbook of Experimental Structural Dynamics

Download Handbook of Experimental Structural Dynamics PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 9781461445463
Total Pages : 1403 pages
Book Rating : 4.4/5 (454 download)

DOWNLOAD NOW!


Book Synopsis Handbook of Experimental Structural Dynamics by : Randall Allemang

Download or read book Handbook of Experimental Structural Dynamics written by Randall Allemang and published by Springer. This book was released on 2022-08-06 with total page 1403 pages. Available in PDF, EPUB and Kindle. Book excerpt: The SEM Handbook of Experimental Structural Dynamics stands as a comprehensive overview and reference for its subject, applicable to workers in research, product design and manufacture, and practice. The Handbook is devoted primarily to the areas of structural mechanics served by the Society for Experimental Mechanics IMAC community, such as modal analysis, rotating machinery, structural health monitoring, shock and vibration, sensors and instrumentation, aeroelasticity, ground testing, finite element techniques, model updating, sensitivity analysis, verification and validation, experimental dynamics sub-structuring, quantification of margin and uncertainty, and testing of civil infrastructure. Chapters offer comprehensive, detailed coverage of decades of scientific and technologic advance and all demonstrate an experimental perspective. Several sections specifically discuss the various types of experimental testing and common practices utilized in the automotive, aerospace, and civil structures industries. · History of Experimental Structural Mechanics · DIC Methods - Dynamic Photogrammetry · LDV Methods · Applied Digital Signal Processing · Introduction to Spectral - Basic Measurements · Structural Measurements - FRF · Random and Shock Testing · Rotating System Analysis Methods * · Sensors Signal Conditioning Instrumentation · Design of Modal Tests · Experimental Modal Methods · Experimental Modal Parameter Evaluation · Operating Modal Analysis Methods * · Analytical Numerical Substructuring · Finite Element Model Correlation · Model Updating · Damping of Materials and Structures · Model Calibration and Validation in Structures* · Uncertainty Quantification: UQ, QMU and Statistics * · Nonlinear System Analysis Methods (Experimental) · Structural Health Monitoring and Damage Detection · Experimental Substructure Modeling · Modal Modeling · Response (Impedance) Modeling · Nonlinear Normal Mode Analysis Techniques (Analytical) * · Modal Modeling with Nonlinear Connection Elements (Analytical) · Acoustics of Structural Systems (VibroAcoustics) * · Automotive Structural Testing * · Civil Structural Testing · Aerospace Perspective for Modeling and Validation · Sports Equipment Testing * · Applied Math for Experimental Structural Mechanics * Chapter Forthcoming Contributions present important theory behind relevant experimental methods as well as application and technology. Topical authors emphasize and dissect proven methods and offer detail beyond a simple review of the literature. Additionally, chapters cover practical needs of scientists and engineers who are new to the field. In most cases, neither the pertinent theory nor, in particular, the practical issues have been presented formally in current academic textbooks. Each chapter in the Handbook represents a ’must read’ for someone new to the subject or for someone returning to the field after an absence. Reference lists in each chapter consist of the seminal papers in the literature. This Handbook stands in parallel to the SEM Handbook of Experimental Solid Mechanics, where this Handbook focuses on experimental dynamics of structures at a macro-scale often involving multiple components and materials where the SEM Handbook of Experimental Solid Mechanics focuses on experimental mechanics of materials at a nano-scale and/or micro-scale.

Fracture Mechanics

Download Fracture Mechanics PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 140203153X
Total Pages : 370 pages
Book Rating : 4.4/5 (2 download)

DOWNLOAD NOW!


Book Synopsis Fracture Mechanics by : E.E. Gdoutos

Download or read book Fracture Mechanics written by E.E. Gdoutos and published by Springer Science & Business Media. This book was released on 2006-03-30 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: New developments in the applications of fracture mechanics to engineering problems have taken place in the last years. Composite materials have extensively been used in engineering problems. Quasi-brittle materials including concrete, cement pastes, rock, soil, etc. all benefit from these developments. Layered materials and especially thin film/substrate systems are becoming important in small volume systems used in micro and nanoelectromechancial systems (MEMS and NEMS). Nanostructured materials are being introduced in our every day life. In all these problems fracture mechanics plays a major role for the prediction of failure and safe design of materials and structures. These new challenges motivated the author to proceed with the second edition of the book. The second edition of the book contains four new chapters in addition to the ten chapters of the first edition. The fourteen chapters of the book cover the basic principles and traditional applications, as well as the latest developments of fracture mechanics as applied to problems of composite materials, thin films, nanoindentation and cementitious materials. Thus the book provides an introductory coverage of the traditional and contemporary applications of fracture mechanics in problems of utmost technological importance. With the addition of the four new chapters the book presents a comprehensive treatment of fracture mechanics. It includes the basic principles and traditional applications as well as the new frontiers of research of fracture mechanics during the last three decades in topics of contemporary importance, like composites, thin films, nanoindentation and cementitious materials. The book contains fifty example problems and more than two hundred unsolved problems. A "Solutions Manual" is available upon request for course instructors from the author.

Experimental Mechanics of Solids

Download Experimental Mechanics of Solids PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119970091
Total Pages : 769 pages
Book Rating : 4.1/5 (199 download)

DOWNLOAD NOW!


Book Synopsis Experimental Mechanics of Solids by : Cesar A. Sciammarella

Download or read book Experimental Mechanics of Solids written by Cesar A. Sciammarella and published by John Wiley & Sons. This book was released on 2012-03-26 with total page 769 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental solid mechanics is the study of materials to determine their physical properties. This study might include performing a stress analysis or measuring the extent of displacement, shape, strain and stress which a material suffers under controlled conditions. In the last few years there have been remarkable developments in experimental techniques that measure shape, displacement and strains and these sorts of experiments are increasingly conducted using computational techniques. Experimental Mechanics of Solids is a comprehensive introduction to the topics, technologies and methods of experimental mechanics of solids. It begins by establishing the fundamentals of continuum mechanics, explaining key areas such as the equations used, stresses and strains, and two and three dimensional problems. Having laid down the foundations of the topic, the book then moves on to look at specific techniques and technologies with emphasis on the most recent developments such as optics and image processing. Most of the current computational methods, as well as practical ones, are included to ensure that the book provides information essential to the reader in practical or research applications. Key features: Presents widely used and accepted methodologies that are based on research and development work of the lead author Systematically works through the topics and theories of experimental mechanics including detailed treatments of the Moire, Speckle and holographic optical methods Includes illustrations and diagrams to illuminate the topic clearly for the reader Provides a comprehensive introduction to the topic, and also acts as a quick reference guide This comprehensive book forms an invaluable resource for graduate students and is also a point of reference for researchers and practitioners in structural and materials engineering.

Experimental Mechanics of Solids

Download Experimental Mechanics of Solids PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 0470689536
Total Pages : 769 pages
Book Rating : 4.4/5 (76 download)

DOWNLOAD NOW!


Book Synopsis Experimental Mechanics of Solids by : Cesar A. Sciammarella

Download or read book Experimental Mechanics of Solids written by Cesar A. Sciammarella and published by John Wiley & Sons. This book was released on 2012-04-30 with total page 769 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental solid mechanics is the study of materials to determine their physical properties. This study might include performing a stress analysis or measuring the extent of displacement, shape, strain and stress which a material suffers under controlled conditions. In the last few years there have been remarkable developments in experimental techniques that measure shape, displacement and strains and these sorts of experiments are increasingly conducted using computational techniques. Experimental Mechanics of Solids is a comprehensive introduction to the topics, technologies and methods of experimental mechanics of solids. It begins by establishing the fundamentals of continuum mechanics, explaining key areas such as the equations used, stresses and strains, and two and three dimensional problems. Having laid down the foundations of the topic, the book then moves on to look at specific techniques and technologies with emphasis on the most recent developments such as optics and image processing. Most of the current computational methods, as well as practical ones, are included to ensure that the book provides information essential to the reader in practical or research applications. Key features: Presents widely used and accepted methodologies that are based on research and development work of the lead author Systematically works through the topics and theories of experimental mechanics including detailed treatments of the Moire, Speckle and holographic optical methods Includes illustrations and diagrams to illuminate the topic clearly for the reader Provides a comprehensive introduction to the topic, and also acts as a quick reference guide This comprehensive book forms an invaluable resource for graduate students and is also a point of reference for researchers and practitioners in structural and materials engineering.

Introduction to Solid Mechanics

Download Introduction to Solid Mechanics PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 1461467683
Total Pages : 520 pages
Book Rating : 4.4/5 (614 download)

DOWNLOAD NOW!


Book Synopsis Introduction to Solid Mechanics by : Jacob Lubliner

Download or read book Introduction to Solid Mechanics written by Jacob Lubliner and published by Springer Science & Business Media. This book was released on 2013-11-08 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Solid Mechanics: An Integrated Approach presents for the first time in one text the concepts and processes covered in statics and mechanics of materials curricula following a granular, topically integrated approach. Since the turn of the millennium, it has become common in engineering schools to combine the traditional undergraduate offerings in rigid-body statics (usually called “statics”) and deformable body mechanics (known traditionally as “strength of materials” or, more recently, “mechanics of materials”) into a single, introductory course in solid mechanics. Many textbooks for the new course sequentially meld pieces of existing, discrete books--sometimes, but not always, acknowledging the origin--into two halves covering Statics and Mechanics of Materials. In this volume, Professors Lubliner and Papadopoulos methodically combine the essentials of statics and mechanics of materials, illustrating the relationship of concepts throughout, into one "integrated" text. Introduction to Solid Mechanics: An Integrated Perspective offers a holistic treatment of the depth and breadth of solid mechanics, proceeding from first principles to applications.

Micromechanics of Defects in Solids

Download Micromechanics of Defects in Solids PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 9400934890
Total Pages : 601 pages
Book Rating : 4.4/5 (9 download)

DOWNLOAD NOW!


Book Synopsis Micromechanics of Defects in Solids by : T. Mura

Download or read book Micromechanics of Defects in Solids written by T. Mura and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book stems from a course on Micromechanics that I started about fifteen years ago at Northwestern University. At that time, micromechanics was a rather unfamiliar subject. Although I repeated the course every year, I was never convinced that my notes have quite developed into a final manuscript because new topics emerged constantly requiring revisions, and additions. I finally came to realize that if this is continued, then I will never complete the book to my total satisfaction. Meanwhile, T. Mori and I had coauthored a book in Japanese, entitled Micromechanics, published by Baifu-kan, Tokyo, in 1975. It received an extremely favorable response from students and re searchers in Japan. This encouraged me to go ahead and publish my course notes in their latest version, as this book, which contains further development of the subject and is more comprehensive than the one published in Japanese. Micromechanics encompasses mechanics related to microstructures of materials. The method employed is a continuum theory of elasticity yet its applications cover a broad area relating to the mechanical behavior of materi als: plasticity, fracture and fatigue, constitutive equations, composite materi als, polycrystals, etc. These subjects are treated in this book by means of a powerful and unified method which is called the 'eigenstrain method. ' In particular, problems relating to inclusions and dislocations are most effectively analyzed by this method, and therefore, special emphasis is placed on these topics.

Diffusion in Solids

Download Diffusion in Solids PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 354071488X
Total Pages : 645 pages
Book Rating : 4.5/5 (47 download)

DOWNLOAD NOW!


Book Synopsis Diffusion in Solids by : Helmut Mehrer

Download or read book Diffusion in Solids written by Helmut Mehrer and published by Springer Science & Business Media. This book was released on 2007-07-24 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the central aspects of diffusion in solids, and goes on to provide easy access to important information about diffusion in metals, alloys, semiconductors, ion-conducting materials, glasses and nanomaterials. Coverage includes diffusion-controlled phenomena including ionic conduction, grain-boundary and dislocation pipe diffusion. This book will benefit graduate students in such disciplines as solid-state physics, physical metallurgy, materials science, and geophysics, as well as scientists in academic and industrial research laboratories.

Solid Mechanics: a Variational Approach

Download Solid Mechanics: a Variational Approach PDF Online Free

Author :
Publisher : McGraw-Hill Companies
ISBN 13 :
Total Pages : 594 pages
Book Rating : 4.:/5 (318 download)

DOWNLOAD NOW!


Book Synopsis Solid Mechanics: a Variational Approach by : Clive L. Dym

Download or read book Solid Mechanics: a Variational Approach written by Clive L. Dym and published by McGraw-Hill Companies. This book was released on 1973 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Springer Handbook of Spacetime

Download Springer Handbook of Spacetime PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3642419925
Total Pages : 883 pages
Book Rating : 4.6/5 (424 download)

DOWNLOAD NOW!


Book Synopsis Springer Handbook of Spacetime by : Abhay Ashtekar

Download or read book Springer Handbook of Spacetime written by Abhay Ashtekar and published by Springer. This book was released on 2014-09-01 with total page 883 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Springer Handbook of Spacetime is dedicated to the ground-breaking paradigm shifts embodied in the two relativity theories, and describes in detail the profound reshaping of physical sciences they ushered in. It includes in a single volume chapters on foundations, on the underlying mathematics, on physical and astrophysical implications, experimental evidence and cosmological predictions, as well as chapters on efforts to unify general relativity and quantum physics. The Handbook can be used as a desk reference by researchers in a wide variety of fields, not only by specialists in relativity but also by researchers in related areas that either grew out of, or are deeply influenced by, the two relativity theories: cosmology, astronomy and astrophysics, high energy physics, quantum field theory, mathematics, and philosophy of science. It should also serve as a valuable resource for graduate students and young researchers entering these areas, and for instructors who teach courses on these subjects. The Handbook is divided into six parts. Part A: Introduction to Spacetime Structure. Part B: Foundational Issues. Part C: Spacetime Structure and Mathematics. Part D: Confronting Relativity theories with observations. Part E: General relativity and the universe. Part F: Spacetime beyond Einstein.

Experimental Stress Analysis for Materials and Structures

Download Experimental Stress Analysis for Materials and Structures PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3319060864
Total Pages : 498 pages
Book Rating : 4.3/5 (19 download)

DOWNLOAD NOW!


Book Synopsis Experimental Stress Analysis for Materials and Structures by : Alessandro Freddi

Download or read book Experimental Stress Analysis for Materials and Structures written by Alessandro Freddi and published by Springer. This book was released on 2015-03-19 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the main methods of experimental stress analysis and examines their application to various states of stress of major technical interest, highlighting aspects not always covered in the classic literature. It is explained how experimental stress analysis assists in the verification and completion of analytical and numerical models, the development of phenomenological theories, the measurement and control of system parameters under operating conditions, and identification of causes of failure or malfunction. Cases addressed include measurement of the state of stress in models, measurement of actual loads on structures, verification of stress states in circumstances of complex numerical modeling, assessment of stress-related material damage, and reliability analysis of artifacts (e.g. prostheses) that interact with biological systems. The book will serve graduate students and professionals as a valuable tool for finding solutions when analytical solutions do not exist.

New Approaches to Structural Mechanics, Shells and Biological Structures

Download New Approaches to Structural Mechanics, Shells and Biological Structures PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 9401599300
Total Pages : 520 pages
Book Rating : 4.4/5 (15 download)

DOWNLOAD NOW!


Book Synopsis New Approaches to Structural Mechanics, Shells and Biological Structures by : Horace R. Drew

Download or read book New Approaches to Structural Mechanics, Shells and Biological Structures written by Horace R. Drew and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Festschrift marks the retirement of Professor Chris Calladine, FRS after 42 years on the teaching staff of the Department of Engineering, University of Cambridge. It contains a series of papers contributed by his former students, colleagues, and friends. Chris Calladine's research has ranged very widely across the field of struc tural mechanics, with a particular focus on the plastic deformation of solids and structures, and the behaviour of thin-shell structures. His insightful books on Engineering Plasticity and Theory of Shell Structures have been appreciated by many generations of students at Cambridge and elsewhere. His scientific contri bution outside engineering, in molecular structures, is at least as significant, and he is unique among engineers in having co-authored a book on DNA. Also, he has been keenly interested in the research of many students and colleagues, and on many occasions his quick grasp and physical insight have helped a student, and sometimes a colleague, find the nub of the problem without unnecessary effort. Many of the papers contained in this volume gratefully acknowledge this generous contribution. We thank Professor G. M. l. Gladwell for reading through all of the contri butions, Mrs R. Baxter and Mrs o. Constantinides for help in preparing this volume, Godfrey Argent Studio for permission to reproduce Calladine's por trait for the Royal Society, and Dr A. Schouwenburg -from Kluwer- for his assistance. Horace R. Drew Sergio Pellegrino ix CHRIS CALLADINE SOME THOUGHTS ON RESEARCH c. R.