Download or read book Fatigue of Fiber reinforced Composites written by Anastasios P. Vassilopoulos and published by Springer Science & Business Media. This book was released on 2011-07-14 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue has long been recognized as a mechanism that can provoke catastrophic material failure in structural applications and researchers are now turning to the development of prediction tools in order to reduce the cost of determining design criteria for any new material. Fatigue of Fiber-reinforced Composites explains these highly scientific subjects in a simple yet thorough way. Fatigue behavior of fiber-reinforced composite materials and structural components is described through the presentation of numerous experimental results. Many examples help the reader to visualize the failure modes of laminated composite materials and structural adhesively bonded joints. Theoretical models, based on these experimental data, are demonstrated and their capacity for fatigue life modeling and prediction is thoroughly assessed. Fatigue of Fiber-reinforced Composites gives the reader the opportunity to learn about methods for modeling the fatigue behavior of fiber-reinforced composites, about statistical analysis of experimental data, and about theories for life prediction under loading patterns that produce multiaxial fatigue stress states. The authors combine these theories to establish a complete design process that is able to predict fatigue life of fiber-reinforced composites under multiaxial, variable amplitude stress states. A classic design methodology is presented for demonstration and theoretical predictions are compared to experimental data from typical material systems used in the wind turbine rotor blade industry. Fatigue of Fiber-reinforced Composites also presents novel computational methods for modeling fatigue behavior of composite materials, such as artificial neural networks and genetic programming, as a promising alternative to the conventional methods. It is an ideal source of information for researchers and graduate students in mechanical engineering, civil engineering and materials science.

Download or read book Etude du comportement en fatigue des composites renforc s par fibres v g tales written by Shaoxiong Liang and published by . This book was released on 2012 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: L’étude présentée porte sur la caractérisation et la comparaison des propriétés quasi-statiques et en fatigue de composites à fibres de lin et de verre avec une matrice époxy. Une importante campagne d’essais de fatigue a été réalisée à partir des propriétés quasi-statiques de traction et cisaillement plan mesurées. Il apparaît que les caractéristiques en statique et en fatigue du verre/époxy sont supérieures à celles du lin/époxy à taux de fibres et stratification identiques. Cependant, en raison de la faible densité des renforts de lin, les écarts entre les propriétés spécifiques des deux matériaux sont faibles. La mesure de l’évolution des propriétés en fatigue a mis à jour des comportements phénoménologiques particuliers tels que la diminution de l’amortissement et l’augmentation de la rigidité des lin/époxy ayant des fibres parallèles à la direction du chargement, au cours de la vie des éprouvettes. Le suivi de l’endommagement par la mesure des densités de fissures montre que celle-ci augmente avec le chargement et le nombre de cycles appliqués. Les simulations par éléments finis de la durée de vie des composites lin/époxy, intégrant la variabilité des paramètres du modèle par la méthode Monté-Carlo, donnent des courbes de Wöhler conservatives par rapport aux données expérimentales. Conformément aux mesures expérimentales, la variabilité des durées de vie calculées diminue lorsque le chargement baisse

Download or read book Fatigue of Textile and Random Fibre Reinforced Composites written by Valter Carvelli and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adhesion Between Polymers and Concrete Adh sion Entre Polym res Et B ton written by H. R. Sasse and published by Springer. This book was released on 1986 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preface Adhesion is a phenomenon architects and civil engineers are not very familiar with. In other disciplines knowledge about surface properties and the background of bonding energies is also far from satisfactory; nevertheless there are many important· applications in concrete engineering, where adhesion is necessary for success and durability. These include: - coating and painting - repair of concrete surfaces - bonding of fresh to old concrete - crack injection - glueing of precast elements - glueing of steel to concrete, etc. In 1981 RILEM established the technical committee 52-RAC 'Resin Adherence to Concrete'. The main aims of the committee's work were - to collect research results and practical experiences - to initiate and coordinate research programs - to develop, on a scientific base, test methods for field and for laboratory purposes. One of the results of the committee's work is a state-of-the-art report, which will be presented orally as a General Report at the International Symposium ISAP '86, and will be printed either in the RILEM journal Materials and Structures or separately. Several test recommendations have been elaborated and will be prepared as drafts for the participants ofISAP '86. These are: - direct tensile test - pull-off test - direct shear test - slant shear test - four-point bending test - dynamic loading test - thermal compatibility test (two versions) - injectibility test.

Download or read book Inelastic Behaviour of Structures under Variable Loads written by Zenon Mróz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of papers is a state of the art presentation of theories and methods related to the problem of the behaviour of mechanical structures under variable loads beyond their elastic limit In particular, the problems of shakedown, ratchetting, transient and asymptotic cyclic states are addressed. The volume is composed of four chapters devoted to material modelling for cyclic loading conditions; general theory of accommodated states of structures; effects of changes of the geometry on the inelastic structural response; and numerical techniques with applications to particular engineering problems. It was aimed to provide a unified approach in order to understand both inelastic material and structural response under variable loading conditions. The attempt to extend the classical shakedown theory of Melan and Koiter to geometrically non-linear problems is presented in several papers. The industrial application of cyclic plasticity to the analysis and the design of pressure bellows, compensators, turbine disks, or flange connections under thermal and pressure cycles illustrates the great potential of the numerical techniques developed for this purpose using mostly min-max approaches. The treatment of railway problems and the analysis and optimisation of pavements are further examples of important areas of applications. Emphasis was laid on approaches that take into account the fact that loading histories are often not precisely known Therefore, the center of interest lies in other than step by step calculation methods.

Download or read book Charges Et Les Sp cifications Des Avions Militaires written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel. Meeting and published by . This book was released on 1997 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Prevention and Control of Aggression and the Impact on its Victims written by Manuela Bach and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the XIV World Meeting of the International Society for the Research on Aggression: Prevention and Control of Aggression and the Impact on its Victims, held in July 9-14, 2000, in Valencia, Spain. Aggression is an aspect of human society that has interested scientists for many decades, and their work has provided important knowledge about its causes and way to prevent and control this behavior. However, not only scientists but many professionals working in the wide spectrum of society, from family to international policy, are interested in having programs of interventions capable of reducing aggression and violence in our society. This comprehensive book is a compendium of most research approaches that are currently taking place in the field of aggression, focusing on the interventions to control and prevent this behavior and the impact on its victims. The chapters of the book include biological approaches to aggression, such as neuroanatomy, neurochemistry, neuroendocrinology, genetics and psychopathology; information about aggression in children and adolescents in different settings such as family, school and community; characteristics if aggression in specific relationships such as marital and sexual, and specific settings such as bars, prisons and traffic; and cultural approaches to aggression, social prejudice, war and programs of peace. Furthermore, a small number of representative chapters about victims are included, ranging from the impact of aggression on behavior and physiology in animal models to victims of war. As this book highlights, the interventions to prevent and control aggression have to be diverse (highly heterogenic) in order to deal with all aspects of human beings and society, ranging from pharmacological control in individuals to programs of peace to promote respect among people and among nations. Scientists, academics and professionals dealing with any facet of aggression and its impact on our society will obtain in this book information about the complexity of this research field and the ways to approach our objective: eliminate aggression from the human behavioral repertoire.

Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.

Download or read book The Conservation of Cultural Property with Special Reference to Tropical Conditions written by Unesco and published by . This book was released on 1968 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Barry s Introduction to Construction of Buildings written by Stephen Emmitt and published by John Wiley & Sons. This book was released on 2009-02-05 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: The five volume series, Barry's Construction of Buildings,has been established as a standard text on building technology formany years. However, a substantial update has long been required,and while doing this the opportunity has been taken to reduce fivevolumes to two in a more user-friendly format. The introductory volume covers domestic construction and bringstogether material from volumes 1, 2 and part of 5. The extensiverevision includes modern concepts on site assembly, environmentalissues and safety, and features further reading.

Download or read book The Theory of Unitary Group Representations written by George Whitelaw Mackey and published by . This book was released on 1955 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Composite Aircraft Structure written by United States. Federal Aviation Administration and published by . This book was released on 1984 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Emotional Minds written by Sabrina Ebbersmeyer and published by Walter de Gruyter. This book was released on 2012-07-30 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thoroughly contemporary question of the relationship between emotion and reason was debated with such complexity by the philosophers of the 17th century that their concepts remain a source of inspiration for today’s research about the emotionality of the mind. The analyses of the works of Descartes, Spinoza, Leibniz, and many other thinkers collected in this volume offer new insights into the diversity and significance of philosophical reflections about emotions during the early modern era. A focus is placed on affective components in learning processes and the boundaries between emotions and reason.

Download or read book Lightning Protection of Aircraft written by Franklin Fisher and published by CreateSpace. This book was released on 2012-07-13 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an attempt to present under one cover the current state of knowledge concerning the potential lightning effects on aircraft and that means that are available to designers and operators to protect against these effects. The impetus for writing this book springs from two sources- the increased use of nonmetallic materials in the structure of aircraft and the constant trend toward using electronic equipment to handle flight-critical control and navigation function.

Download or read book Advances in Rotorcraft Technology written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Flight Vehicle Integration Panel. Symposium and published by . This book was released on 1997 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coumarins written by Richard O'Kennedy and published by Wiley. This book was released on 1997-04-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coumarins: Biology, Applications and Mode of Action predominantly focuses on the parent compound, coumarin, and its main metabolite in humans, 7-hydroxycoumarin. It describes in detail every facet of these compounds including history, toxicology, chemistry, metabolism, analysis, clinical, veterinary and other applications, their roles as immunomodulatory agents and speculates on their mode of action.

Download or read book PET Chemistry written by P.A. Schubiger and published by Springer Science & Business Media. This book was released on 2007-01-19 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Personalized medicine employing patient-based tailor-made therapeutic drugs is taking over treatment paradigms in a variety of ?elds in oncology and the central nervous system. The success of such therapies is mainly dependent on ef?cacious therapeutic drugs and a selective imaging probe for identi?cation of potential responders as well as therapy monitoring for an early bene?t assessment. Molecular imaging (MI) is based on the selective and speci?c interaction of a molecular probe with a biological target which is visualized through nuclear, magnetic resonance, near infrared or other methods. Therefore it is the method of choice for patient selection and therapy monitoring as well as for speci?c e- point monitoring in modern drug development. PET (positron emitting tomography), a nuclear medical imaging modality, is ideally suited to produce three-dimensional images of various targets or processes. The rapidly increasing demand for highly selective probes for MI strongly pushes the development of new PET tracers and PET chemistry. ‘PET chemistry’ can be de?ned as the study of positron-emitting compounds regarding their synthesis, structure, composition, reactivity, nuclear properties and processes and their properties in natural and - natural environments. In practice PET chemistry is strongly in?uenced by the unique properties of the radioisotopes used (e. g. , half-life, che- cal reactivity, etc. ) and integrates scienti?c aspects of nuclear-, organic-, inorganic- and biochemistry.