Fracture And Fatigue In Wood
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Author | : Ian Smith |
Publisher | : John Wiley & Sons |
Total Pages | : 248 |
Release | : 2003-06-02 |
Genre | : Technology & Engineering |
ISBN | : 9780471487081 |
Download Fracture and Fatigue in Wood Book in PDF, Epub and Kindle
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.
Author | : Stephen William James Boatright |
Publisher | : |
Total Pages | : 324 |
Release | : 1977 |
Genre | : Engineering |
ISBN | : |
Download Studies on the Fracture and Fatigue of Wood Book in PDF, Epub and Kindle
Author | : B. Bobraszcyk |
Publisher | : |
Total Pages | : |
Release | : 1983 |
Genre | : |
ISBN | : |
Download An Investigation Into the Fracture and Fatigue Behaviour of Wood Book in PDF, Epub and Kindle
Author | : Marcelo F. S. F. de Moura |
Publisher | : CRC Press |
Total Pages | : 236 |
Release | : 2018-06-14 |
Genre | : Science |
ISBN | : 1351106953 |
Download Wood Fracture Characterization Book in PDF, Epub and Kindle
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.
Author | : Guanyu Hu |
Publisher | : |
Total Pages | : 200 |
Release | : 2003 |
Genre | : Civil engineering |
ISBN | : |
Download Mode-II Fatigue Fracture of Wood-composite Bonded Interfaces Book in PDF, Epub and Kindle
Author | : Alan T. Zehnder |
Publisher | : Springer |
Total Pages | : 155 |
Release | : 2016-09-20 |
Genre | : Science |
ISBN | : 3319421956 |
Download Fracture, Fatigue, Failure and Damage Evolution, Volume 8 Book in PDF, Epub and Kindle
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
Author | : Forintek Canada Corp. Western Forest Products Laboratory |
Publisher | : Forintek Canada Corporation |
Total Pages | : 318 |
Release | : 1979 |
Genre | : Technology & Engineering |
ISBN | : |
Download Proceedings of the First International Conference on Wood Fracture, Banff, Alberta, 14-16 August 1978 Book in PDF, Epub and Kindle
Author | : Yong Hong |
Publisher | : |
Total Pages | : 474 |
Release | : 2003 |
Genre | : Composite materials |
ISBN | : |
Download Fatigue and Fracture of the Frp-wood Interface: Experimental Characterization and Performance Limits Book in PDF, Epub and Kindle
Author | : T. A. C. M. van der Put |
Publisher | : |
Total Pages | : 0 |
Release | : 2011 |
Genre | : Fracture mechanics |
ISBN | : 9781612092102 |
Download A New Fracture Mechanics Theory of Wood Book in PDF, Epub and Kindle
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.
Author | : Wadwood Y. Hamad |
Publisher | : |
Total Pages | : 492 |
Release | : 1994 |
Genre | : |
ISBN | : |
Download A Fundamental Study of the Fracture and Fatigue Characteristics of Single Wood Pulp Fibres Book in PDF, Epub and Kindle
"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." --