The Mechanical Properties of Wood

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Author : Frederick F. Wangaard
Genre : Technology & Engineering

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Author : Samuel J. Record
Genre : Fiction

Summary : In 'The Mechanical Properties of Wood', Samuel J. Record embarks on an exhaustive exploration of wood's physical characteristics, delving into the factors influencing its structural integrity and various methodologies for testing timber. Record's work stands as a seminal contribution to the study of natural materials, juxtaposing scientific examination with an accessible narrative style. As such, the book situates itself at the intersection of industrial application and academic inquiry, solidifying its relevance within both the forestry sector and the broader scientific community. The elaborate details and precise analyses presented stand testament to the book's enduring value as a resource on the subject. Samuel J. Record's scholarly pedigree shines through in his comprehensive treatise, drawing from his vast experience and insight into wood science. It is likely that Record's academic background and professional immersion in the field inspired his rigorous examination of timber's mechanical properties. His expertise is evident in the depth of content, revealing not only technical mastery but also a sincere endeavor to disseminate knowledge to a spectrum of readers, from professionals to enthusiasts. The republication of Record's 'The Mechanical Properties of Wood' by DigiCat Publishing offers both initiates and experts in the field an invaluable reference. Scholars seeking a meticulous and historical perspective on wood science will find Record's analysis indispensable, while practitioners in forestry and material engineering will appreciate the practical implications of his findings. This piece of literature, beyond its immediate utility, also serves as a bridge between past and present discourse on the subject, making it an essential addition to any discerning reader's library.

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Author : Samuel J. Record
Genre :

Summary : There are three kinds of internal stresses, namely, tensile, compressive, and shearing. When external forces act upon a bar in a direction away from its ends or a direct pull, the stress is a tensile stress; when toward the ends or a direct push, compressive stress. In the first instance the strain is an elongation; in the second a shortening. Whenever the forces tend to cause one portion of the material to slide upon another adjacent to it the action is called a shear. The action is that of an ordinary pair of shears. When riveted plates slide on each other the rivets are sheared off. These three simple stresses may act together, producing compound stresses, as in flexure. When a bow is bent there is a compression of the fibres on the inner or concave side and an elongation of the fibres on the outer or convex side. There is also a tendency of the various fibres to slide past one another in a longitudinal direction. If the bow were made of two or more separate pieces of equal length it would be noted on bending that slipping occurred along the surfaces of contact, and that the ends would no longer be even. If these pieces were securely glued together they would no longer slip, but the tendency to do so would exist just the same. Moreover, it would be found in the latter case that the bow would be much harder to bend than where the pieces were not glued together in other words, the stiffness of the bow would be materially increased.Stiffness is the property by means of which a body acted upon by external forces tends to retain its natural size and shape, or resists deformation. Thus a material that is difficult to bend or otherwise deform is stiff; one that is easily bent or otherwise deformed is flexible. Flexibility is not the exact counterpart of stiffness, as it also involves toughness and pliability.If successively larger loads are applied to a body and then removed it will be found that at first the body completely regains its original form upon release from the stress in other words, the body is elastic. No substance known is perfectly elastic, though many are practically so under small loads. Eventually a point will be reached where the recovery of the specimen is incomplete. This point is known as the elastic limit, which may be defined as the limit beyond which it is impossible to carry the distortion of a body without producing a permanent alteration in shape. After this limit has been exceeded, the size and shape of the specimen after removal of the load will not be the same as before, and the difference or amount of change is known as the permanent set.

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Author : Samuel James Record
Genre : Technology & Engineering

Summary : Excerpt from The Mechanical Properties of Wood: Including a Discussion of the Factors Affecting the Mechanical Properties, and Methods of Timber Testing Timber testing Working plan Forms of material tested Size of test specimens Moisture determination Machine for static tests Speed of testing machine Bending large beams Bending small beams Endwise compression Compression across the gram Shear along the grain Impact test Hardness test: Abrasion and indentation Cleavage test Tension test parallel to the grain Tension test at right angles to the grain Torsion test Special tests Spike pulling test Packing boxes Vehicle and implement woods. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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Author : Samuel James Record
Genre : Timber

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Author : Frederick F. Wangaard
Genre : Technology & Engineering

Summary : Excerpt from The Mechanical Properties of Wood One of the principal objectives of laboratory investigations is to determine values per unit area for the various strength proper ties of wood. These, however, because of the complex structure of wood, cannot have a constant value that will be exactly repeated in each test, even though no error be made. The most that can be accomplished is to find average values, the amount of variation above and below this average, and the laws that govern the variation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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Author : Samuel J. Record
Genre : Technology & Engineering

Summary : Unlock the science behind one of nature’s most versatile materials in ""The Mechanical Properties of Wood"" by Samuel J. Record. Delve into the fascinating world of wood mechanics with this authoritative guide, exploring its strength, durability, elasticity, and structural applications. Samuel J. Record, a renowned expert in forestry and material science, provides an in-depth analysis of how wood behaves under different conditions, making this book an invaluable resource for engineers, architects, craftsmen, and students of material science. Through detailed explanations and precise scientific observations, ""The Mechanical Properties of Wood"" examines essential topics such as wood’s response to stress, environmental influences, grain structure, and the factors that affect its mechanical integrity. Whether you're designing structures, working with timber, or studying material properties, this book offers key insights into making informed decisions when using wood for practical applications. With its blend of technical knowledge and real-world applications, this comprehensive work remains a timeless reference in the fields of forestry, construction, and material science. Gain a deeper appreciation for wood’s unique qualities and its role in engineering and craftsmanship—get your copy of ""The Mechanical Properties of Wood"" today!