This is a thoroughgoing revision and expansion of the earlier book, bringing it up to date with the latest research. The older ideas are presented along with the new, and the experimental evidence is given in outline, and fully referenced. Where practical, illustrations are chosen from key works and the source reference is given in the subtitle as in the first edition. As before, this book is directed toward upper-year university students and graduate students.
Ideas that are highlighted include:
* How the interface governs the transfer of forces between the fibres and the polymer, or metal, or ceramic, which constitutes the other component of the material. The yielding-slip model used almost universally for reinforced polymers is shown to lack any significant experimental support. Instead, ideas originating in the paper industry in the 1950s, which led naturally to the concept of critical fibre length, are shown to fit experimental results quite well.
* How to design a good laminate. The commonly accepted notion of the weakness of angle ply laminates is shown to be a mistake. (It arose from the incorrect use of testing methods derived from standard practice with metals.) New results, using better tests, are presented. These show that much simpler designs could be used.
* Why laminates can be unreliable under compression. Earlier treatments oversimplify: important structural imperfections such as fibre waviness are either neglected or given a single parameter. Letting the fibres follow sine waves permits straightforward analysis, which gives good agreement with test results and suggests avenues for improvement.
* Water and other fluids in reinforced polymers. Many experimental results for absorption and diffusion are presented. These again show that better models are needed. It is shown that the assumptions used hitherto are unnecessary, and an exact solution is presented for diffusion through a simple fibre array.
* Shear failure. When polymers are sheared, account must be taken of their non-metallic nature. While metals may be treated rather like arrays of ball bearings, polymers are more akin to collections of very long pieces of string, so simple shearing can take place with metals but not with polymers. Instead, the polymer chains align in the same way as they do in tension and shear-induced failure in polymers involves breaking the chains in a tensile mode. This explains why attempts to measure the shear strength of reinforced polymers give inconsistent results - see Chapter 6. It also explains some highly improbable results from work on the fibre-polymer interface strength - see Chapter 8.
Each chapter has a set of problems designed to test your knowledge and skill. They are as practical as possible and selected answers are provided.
Since this book is concerned with how composites work, and so how they could be made to perform better, a mathematical basis for the subject is provided. This avoids advanced mathematics (first year university course should be all you require). To clarify the concepts, much use is made of non-dimensional constants. Although the treatment is simple, some complication is unavoidable where many different physical processes act simultaneously.
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A Short Course in Elementary Mechanics for Engineers
Author: Clifford Newton Mills | Size: 6.29 MB | Format:PDF | Publisher: D. Van Nostrand Company | Year: 1916 | pages: 156 | ISBN: 1152039687
This course in Elementary Mechanics is arranged for students who have previously studied Trigonometry. The subject matter is divided into three parts, namely, Kinematics, Kinetics, and Statics. Much detailed discussion is omitted, and the course is written from the definition viewpoint.
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A complete set of lecture notes for an upper-division thermodynamics and statistical mechanics course. Topics covered include elementary probability theory, classical thermodynamics, the thermodynamics of the atmosphere, heat engines, specific heat capacities of gases and solids, the Maxwell velocity distribution, paramagnetism, black-body radiation and the Stephan-Bolzmann law, conduction electrons in metals, and degeneracy pressure in white-dwarfs and neutron stars.
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Posted by: ranger - 04-24-2011, 07:34 AM - Forum: General Books
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The Physics and Mathematics of the Second Law of Thermodynamics
Author: Elliott H. Lieb, Jakob Yngvason | Size: 780 KB | Format:PDF | Publisher: Elliott H. Lieb, Jakob Yngvason | Year: 1999 | pages: 101
The essential postulates of classical thermodynamics are formulated, from which the second law is deduced as the principle of increase of entropy in irreversible adiabatic processes that take one equilibrium state to another. Temperature is derived from entropy, but at the start not even the concept of 'hotness' is assumed.
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Posted by: ranger - 04-24-2011, 05:25 AM - Forum: General Books
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Computational Thermodynamics
Author: Johan Hoffman, Claes Johnson | Size: 5.5 MB | Format:PDF | Year: 2008 | pages: 217
The book develops a new computational foundation of thermodynamics based on deterministic finite precision computation without resort to statistics. In particular a new 2nd Law without the concept of entropy is proved to be a consequence of the 1st Law and finite precision computation.
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Posted by: ranger - 04-24-2011, 05:19 AM - Forum: General Books
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A Heat Transfer Textbook, Third Edition
Author: John H. Lienhard IV, John H. Lienhard V | Size: 10 MB | Format:PDF | Publisher: Phlogiston Press | Year: 2003 | pages: 762 | ISBN: 0971383529
This textbook is an introduction to heat and mass transfer oriented toward engineering students. The subjects covered include heat conduction, forced and natural convection, thermal radiation, boiling, condensation, heat exchangers, and mass transfer. The book includes worked examples and end-of-chapter exercises. The third edition (2003) has been extensively revised and updated from the old second edition (1987).
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From the crashworthiness of vehicles to the protection of human bodies, the engineering background to studies of energy absorption of structures and materials is reviewed. The general principles involved in designing structures and selecting materials for the purpose of energy absorption are also discussed.
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I need the following reports for my thesis. please share these.
1. Seismic behavior of tall liquid storage tanks
by Niwa, Akira
UCB/EERC-78/04, Earthquake Engineering Research Center, University of California, Berkeley, 1978-02, 330 pages (540/N58/1978)
2. Experimental evaluation of seismic design methods for broad cylindrical tanks
by Clough, Douglas P.
UCB/EERC-77/10, Earthquake Engineering Research Center, University of California, Berkeley, 1977-05, 281 pages (540/C59/1977)
3. Static tilt tests of a tall cylindrical liquid storage tank
by Clough, Ray W.; Niwa, Akira
UCB/EERC-79/06, Earthquake Engineering Research Center, University of California, Berkeley, 1979-02, 116 pages (505/C55/1979)
This book forms the Proceedings of an International RILEM Symposium, the fourth in the series, on Testing of Bituminous Mixes in Budapest, Hungary, October 1990. The aim of the Symposium is to promote tests for the characterization, design and quality control of bituminous mixes which combine the best features of traditional and modern approaches. Among the topics covered are specimen preparation, tests with unique loading (Marshall test, uniaxial tension and creep tests etc), which are used for mix design or control of mechanical properties, and tests with repeated loading, which give information on fatigue, permanent deformation and moduli, especially for mix design.
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