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Fracture And Fatigue In Wood
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Book Synopsis Fracture and Fatigue in Wood by : Ian Smith
Download or read book Fracture and Fatigue in Wood written by Ian Smith and published by John Wiley & Sons. This book was released on 2003-06-02 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Damage in wood is principally the result of fatigue. Fatigue is the process of progressive localised irreversible change in a material, and may culminate in cracks or complete fracture if conditions that initiated or propagated the process persist. Comprehensive understanding of fatigue and fracture in engineered wood components must be founded on a proper understanding of the damage processes. Although wood is the world's most widely used structural material, whether measured by volume consumed or value of finished construction, its behaviour is not well understood even by people who have spent their careers studying it. * What is known about failure processes comes almost entirely from empirical evidence collected for engineering purposes. * Hypotheses about behaviour of wood are based on macroscopic observation of specimens during and following tests. * With only limited resources and the need to obtain practical results quickly, the timber engineering research community has steered away from the scientific approach. * Forestry practices are changing and are known to influence characteristics of wood cells therefore there is a need to periodically reassess the mechanical properties of visually graded lumber the blackbox approach. Fatigue and Fracture of Wood examines the above issues from a scientific point of view by drawing on the authors' own research as well as previously published material. Unlike the empirical research, the book begins by examining growth of wood. It briefly examines its structure in relation to how trees grow, before assessing the fatigue and fracture of wood and discussing the scientific methods of modelling fatigue. * Covers from macro to micro behaviour of wood * Presents direct evidence of how wood fractures using Scanning Electron Microscopy * The first book to present a physically correct model for fracture in wood * Provides experimental proof of so-called memory in wood (i.e. dependence of fatigue behaviour on the loading sequence) * Givse practical illustrations of how theories and models can be applied in practice An essential resource for wood scientists/engineers, timber-engineering practitioners, and graduate students studying wood and solid mechanics.
Book Synopsis Studies on the Fracture and Fatigue of Wood by : Stephen William James Boatright
Download or read book Studies on the Fracture and Fatigue of Wood written by Stephen William James Boatright and published by . This book was released on 1977 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation Into the Fracture and Fatigue Behaviour of Wood by : B. Bobraszcyk
Download or read book An Investigation Into the Fracture and Fatigue Behaviour of Wood written by B. Bobraszcyk and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wood Fracture Characterization by : Marcelo F. S. F. de Moura
Download or read book Wood Fracture Characterization written by Marcelo F. S. F. de Moura and published by CRC Press. This book was released on 2018-06-14 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wood Fracture Characterization provides a guide to the application of modern fracture mechanics concepts to wood materials used in structural engineering, which commonly involve discontinuities and irregularities. The authors cover the tests, data reduction schemes and numerical methods devised for wood structural applications, based on cohesive zone analysis, and used to validate experimental-based methodologies. Five detailed Case Studies are included to link theory with engineering practice. This important new text explains the basics of fracture mechanics, and extends them as needed to cover the special behaviour of an anisotropic wood materials.
Book Synopsis Mode-II Fatigue Fracture of Wood-composite Bonded Interfaces by : Guanyu Hu
Download or read book Mode-II Fatigue Fracture of Wood-composite Bonded Interfaces written by Guanyu Hu and published by . This book was released on 2003 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fracture, Fatigue, Failure and Damage Evolution, Volume 8 by : Alan T. Zehnder
Download or read book Fracture, Fatigue, Failure and Damage Evolution, Volume 8 written by Alan T. Zehnder and published by Springer. This book was released on 2016-09-20 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fracture, Fatigue, Failure and Damage Evolution, Volume 8 of the Proceedings of the 2016 SEM Annual Conference & Exposition on Experimental and Applied Mechanics, the eighth volume of ten from the Conference, brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on a wide range of areas, including: In-situ Techniques for Fracture & Fatigue General Topics in Fracture & Fatigue Fracture & Fatigue of Composites Damage, Fracture, Fatigue & Durability Interfacial Effects in Fracture & Fatigue Damage Detection in Fracture & Fatigue
Book Synopsis Proceedings of the First International Conference on Wood Fracture, Banff, Alberta, 14-16 August 1978 by : Forintek Canada Corp. Western Forest Products Laboratory
Download or read book Proceedings of the First International Conference on Wood Fracture, Banff, Alberta, 14-16 August 1978 written by Forintek Canada Corp. Western Forest Products Laboratory and published by Forintek Canada Corporation. This book was released on 1979 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue and Fracture of the Frp-wood Interface: Experimental Characterization and Performance Limits by : Yong Hong
Download or read book Fatigue and Fracture of the Frp-wood Interface: Experimental Characterization and Performance Limits written by Yong Hong and published by . This book was released on 2003 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A New Fracture Mechanics Theory of Wood by : T. A. C. M. van der Put
Download or read book A New Fracture Mechanics Theory of Wood written by T. A. C. M. van der Put and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of the singularity approach of fracture mechanics is at its dead end because it is not possible to describe real failure at the crack boundary and to replace the real failure criteria by general energy conditions and the method remains empirical. Therefore the theoretical approach based on the elliptical flat crack has to be followed, leading to the possibility to derive and explain the empirical mixed "mode 1-11" interaction equation. Because it is shown that the singularity approach does not apply for wood, the theory is based on the flat elliptical crack. This book examines a new fracture mechanics theory of wood. Further discussed: the derivation of the power-law; the energy method of notched beams and of joints loaded perpendicular to the grain; the necessary rejection of the applied crack growth models and fictitious crack models and the Weibull size effect in fracture mechanics.
Book Synopsis A Fundamental Study of the Fracture and Fatigue Characteristics of Single Wood Pulp Fibres by : Wadwood Y. Hamad
Download or read book A Fundamental Study of the Fracture and Fatigue Characteristics of Single Wood Pulp Fibres written by Wadwood Y. Hamad and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The engendered conclusions may be summed up as follows. From a litany of tenuously-oriented microcracks, dominant macrocracks propagate along the axis of the fibre which may sharply deflect in the presence of natural bias (e.g. pits in the fibre wall). The material property degradation characteristics further include: volumetric expansion due to internal fibrillation in the cell wall, extensive external fibrillation, gradual delamination of the layers and partial peeling-off of the cell wall material. Cumulative damage due to cyclic shear is shown to be the most significant, further supported by the high structural collapsibility of the fibre wall layers. The mechanisms of fracture are either due to the development of transverse cracks at regions of high stress concentration (such as bordered pits), or owing to the gradual slippage of the fibre wall layers." --
Book Synopsis Delamination in Wood, Wood Products and Wood-Based Composites by : Voichita Bucur
Download or read book Delamination in Wood, Wood Products and Wood-Based Composites written by Voichita Bucur and published by Springer Science & Business Media. This book was released on 2010-11-02 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last quarter century, delamination has come to mean more than just a failure in adhesion between layers of bonded composite plies that might affect their load-bearing capacity. Ever-increasing computer power has meant that we can now detect and analyze delamination between, for example, cell walls in solid wood. This fast-moving and critically important field of study is covered in a book that provides everyone from manufacturers to research scientists the state of the art in wood delamination studies. Divided into three sections, the book first details the general aspects of the subject, from basic information including terminology, to the theoretical basis for the evaluation of delamination. A settled terminology in this subject area is a first key goal of the book, as the terms which describe delamination in wood and wood-based composites are numerous and often confusing. The second section examines different and highly specialized methods for delamination detection such as confocal laser scanning microscopy, light microscopy, scanning electron microscopy and ultrasonics. Ways in which NDE (non-destructive evaluation) can be employed to detect and locate defects are also covered. The book’s final section focuses on the practical aspects of this defect in a wide range of wood products covering the spectrum from trees, logs, laminated panels and glued laminated timbers to parquet floors. Intended as a primary reference, this book covers everything from the microscopic, anatomical level of delamination within solid wood sections to an examination of the interface of wood and its surface coatings. It provides readers with the perspective of industry as well as laboratory and is thus a highly practical sourcebook for wood engineers working in manufacturing as well as a comprehensively referenced text for materials scientists wrestling with the theory underlying the subject.
Book Synopsis Fracture Mechanics-based Failure Criterion for the Tensile Strength of Wood by : Anton David Pugel
Download or read book Fracture Mechanics-based Failure Criterion for the Tensile Strength of Wood written by Anton David Pugel and published by . This book was released on 1986 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fracture, Fatigue, Failure and Damage Evolution, Volume 8 by : Allison M. Beese
Download or read book Fracture, Fatigue, Failure and Damage Evolution, Volume 8 written by Allison M. Beese and published by Springer. This book was released on 2015-11-07 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fracture, Fatigue, Failure and Damage Evolution, Volume 8 represents the eighth of nine volumes of technical papers presented at the Society for Experimental Mechanics (SEM) 15th International Congress & Exposition on Experimental and Applied Mechanics, held at Costa Mesa, California, June 8-11, 2015. The full set of proceedings also includes volumes on: Dynamic Behavior of Materials, Challenges in Mechanics of Time Dependent Materials, Advancement of Optical Methods in Experimental Mechanics, Experimental and Applied Mechanics, 16th International Symposium on MEMS and Nanotechnology, International Symposium on the Mechanics of Composite and Multi-functional Materials, 5th International Symposium on the Mechanics of Biological Systems and Materials, International Symposium on the Mechanics of Composite and Multi-functional Materials; and Residual Stress, Thermomechanics & Infrared Imaging, Hybrid Techniques and Inverse Problems.
Book Synopsis Determination of Fracture Energy of Wood in Mode II by :
Download or read book Determination of Fracture Energy of Wood in Mode II written by and published by . This book was released on 1997 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new method for determination of fracture energy of wood in forward shear (Mode II) has been developed. The report covers the theoretical background, numerical calculations, and experimental studies resulting in a standard proposal. The work has been carried out as an international collaboration within the RILEM TC 133 committee. The objective was to develop methods for determination of relevant fracture mechanics properties of wood. It was agreed at an early stage within the technical committee that the property to be measured was the fracture energy, and that the work should be concentrated on the shear failure (Mode II). The proposed specimen is a tapered beam which is loaded in bending and the load-deflection response is measured. By measuring the crack extension after the bending test is carried out, the fracture energy can be determined. The important feature of the specimen is that it enables stable crack propagation, a necessity when measuring fracture energy.
Book Synopsis Elasto-plastic Fracture Mechanics of Wood Using the J-integral Method by : Borjen Yeh
Download or read book Elasto-plastic Fracture Mechanics of Wood Using the J-integral Method written by Borjen Yeh and published by . This book was released on 1990 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Case Studies for Fatigue Education by : Ralph Ivan Stephens
Download or read book Case Studies for Fatigue Education written by Ralph Ivan Stephens and published by ASTM International. This book was released on 1994 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides engineering educators and students with a broad range of non- trivial, real-world fatigue problems/situations and solutions for use in the classroom. The 13 cases involve new designs, rework designs, failure analysis, prototype decisions, environmental aspects, metals, non-metals, components, structures, and fasteners. The cases bring out the need for students to integrate elements of engineering that commonly enter into a fatigue design or failure analysis. No index. Annotation copyright by Book News, Inc., Portland, OR
Book Synopsis The Fracture Mechanics of Plant Materials by : Zhuoping Shao
Download or read book The Fracture Mechanics of Plant Materials written by Zhuoping Shao and published by Springer. This book was released on 2018-04-23 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to the application of fracture mechanics and mesomechanics to the analysis of the fracture behaviors of wood and bamboo. It presents a range of research methods to study the fracture behaviors of wood and bamboo, taking into account their various fracture mechanisms resulting from differences in their macroscopic and microscopic structures. It combines theoretical analysis with experiments, as well as various mathematical tools and experimental approaches. The research methods are illustrated by simple schematic diagrams, and the results obtained are largely presented as tables and figures, helping to make the book concise and compact. As such, it provides a valuable guide to the development of new biocomposites that possess exceptional strength and toughness properties and successfully overcome the shortcomings of biomaterials.
