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Bernard Budiansky
Bernard Budiansky (8 March 1925 – 23 January 1999) was an American scholar in the field of applied mechanics, and made seminal contributions to the mechanics of structures and mechanics of materials. He was a recipient of the Timoshenko Medal. Biography Budiansky was born in New York City on March 8, 1925, to Russian immigrant parents, Louis and Rose (Chaplick) Budiansky. Upon obtaining a Bachelor of Civil Engineering degree from City College of New York in 1944 when he was barely over 19, he became an aeronautical research scientist at the National Advisory Committee for Aeronautics (NACA, forerunner to NASA) at Langley Field, Virginia. He took an educational leave from NACA to enroll in 1947 in the graduate program in applied mathematics at Brown University, completing his Ph.D. in 1950 with a dissertation entitled ''Fundamental Theorems and Consequences of the Slip Theory of Plasticity''. He returned to Langley in 1950 and, in 1952, was appointed Head of the Structural M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasticity (physics)
In physics and materials science, plasticity, also known as plastic deformation, is the ability of a solid material to undergo permanent Deformation (engineering), deformation, a non-reversible change of shape in response to applied forces. For example, a solid piece of metal being bent or pounded into a new shape displays plasticity as permanent changes occur within the material itself. In engineering, the transition from Elasticity (physics), elastic behavior to plastic behavior is known as Yield (engineering), yielding. Plastic deformation is observed in most materials, particularly metals, soils, Rock (geology), rocks, concrete, and foams. However, the physical mechanisms that cause plastic deformation can vary widely. At a crystalline scale, plasticity in metals is usually a consequence of dislocations. Such defects are relatively rare in most crystalline materials, but are numerous in some and part of their crystal structure; in such cases, plastic crystallinity can res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NACA
The National Advisory Committee for Aeronautics (NACA) was a United States federal agency founded on March 3, 1915, to undertake, promote, and institutionalize aeronautical research. On October 1, 1958, the agency was dissolved and its assets and personnel were transferred to the newly created National Aeronautics and Space Administration (NASA). NACA is an initialism, i.e., pronounced as individual letters, rather than as a whole word (as was NASA during the early years after being established). Among other advancements, NACA research and development produced the NACA duct, a type of air intake used in modern automotive applications, the NACA cowling, and several series of NACA airfoils, which are still used in aircraft manufacturing. During World War II, NACA was described as "The Force Behind Our Air Supremacy" due to its key role in producing working superchargers for high altitude bombers, and for producing the laminar wing profiles for the North American P-51 Mustang. N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Society Of Engineering Science
A society is a group of individuals involved in persistent social interaction, or a large social group sharing the same spatial or social territory, typically subject to the same political authority and dominant cultural expectations. Societies are characterized by patterns of relationships (social relations) between individuals who share a distinctive culture and institutions; a given society may be described as the sum total of such relationships among its constituent of members. In the social sciences, a larger society often exhibits stratification or dominance patterns in subgroups. Societies construct patterns of behavior by deeming certain actions or concepts as acceptable or unacceptable. These patterns of behavior within a given society are known as societal norms. Societies, and their norms, undergo gradual and perpetual changes. Insofar as it is collaborative, a society can enable its members to benefit in ways that would otherwise be difficult on an individual bas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Von Karman Medal
The Theodore von Karman Medal in Engineering Mechanics is awarded annually to an individual in recognition of his distinguished achievement in engineering mechanics, applicable to any branch of civil engineering. This award was established and endowed in 1960 in honor of Theodore von Kármán by the Engineering Mechanics Division of the American Society of Civil Engineers (ASCE). List of recipients SourceASCE See also *List of engineering awards *List of prizes named after people This is a list of awards that are named after people. A B C D E F G H I J K L M N O P R S T U - V W Y Z See also *Lists of awards Lists of awards cover awards given in various fields, i ... References {{reflist Awards established in 1960 Awards of the American Society of Civil Engineers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Townsend Harris Medal
Townsend (pronounced tounʹ-zənd) or Townshend may refer to: Places United States * Camp Townsend, National Guard training base in Peekskill, New York * Townsend, Delaware *Townsend, Georgia * Townsend, Massachusetts, a New England town **Townsend (CDP), Massachusetts, the main village in the town **Townsend Harbor, Massachusetts, another village in the town *Townsend, Montana *Townsend Township, Huron County, Ohio *Townsend Township, Sandusky County, Ohio * Townsend, Tennessee *Townsend, Wisconsin, a town *Townsend (community), Wisconsin, an unincorporated community * Townshend, Vermont, a New England town **Townshend (CDP), Vermont, the main village in the town * Port Townsend, Washington **Port Townsend Bay **Port Townsend Film Festival Canada * Townsend Township, Ontario * Townsend, Ontario * Townsend Lake, Saskatchewan United Kingdom *Townsend, Buckinghamshire * Townshend, Cornwall * Townsend, Bournemouth, Dorset * Townsend, Poulshot, Wiltshire *Townsend, Kingswinford, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryden Research Lecturer
'' John Dryden (; – ) was an English poet, literary critic, translator, and playwright who in 1668 was appointed England's first Poet Laureate. He is seen as dominating the literary life of Restoration England to such a point that the period came to be known in literary circles as the Age of Dryden. Romanticist writer Sir Walter Scott called him "Glorious John". Early life Dryden was born in the village rectory of Aldwincle near Thrapston in Northamptonshire, where his maternal grandfather was the rector of All Saints. He was the eldest of fourteen children born to Erasmus Dryden and wife Mary Pickering, paternal grandson of Sir Erasmus Dryden, 1st Barone t (1553–1632), and wife Frances Wilkes, Puritan landowning gentry who supported the Puritan cause and Parliament. He was a second cousin once removed of Jonathan Swift. As a boy, Dryden lived in the nearby village of Titchmarsh, where it is likely that he received his first education. In 1644 he was sent to Westmins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Composite Materials
A composite material (also called a composition material or shortened to composite, which is the common name) is a material which is produced from two or more constituent materials. These constituent materials have notably dissimilar chemical or physical properties and are merged to create a material with properties unlike the individual elements. Within the finished structure, the individual elements remain separate and distinct, distinguishing composites from mixtures and solid solutions. Typical engineered composite materials include: * Reinforced concrete and masonry *Composite wood such as plywood *Reinforced plastics, such as fibre-reinforced polymer or fiberglass *Ceramic matrix composites ( composite ceramic and metal matrices) *Metal matrix composites *and other advanced composite materials There are various reasons where new material can be favoured. Typical examples include materials which are less expensive, lighter, stronger or more durable when compared with com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceramic
A ceramic is any of the various hard, brittle, heat-resistant and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay, at a high temperature. Common examples are earthenware, porcelain, and brick. The earliest ceramics made by humans were pottery objects (''pots,'' ''vessels or vases'') or figurines made from clay, either by itself or mixed with other materials like silica, hardened and sintered in fire. Later, ceramics were glazed and fired to create smooth, colored surfaces, decreasing porosity through the use of glassy, amorphous ceramic coatings on top of the crystalline ceramic substrates. Ceramics now include domestic, industrial and building products, as well as a wide range of materials developed for use in advanced ceramic engineering, such as in semiconductors. The word "'' ceramic''" comes from the Greek word (), "of pottery" or "for pottery", from (), "potter's clay, tile, pottery". The earliest kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fracture
Fracture is the separation of an object or material into two or more pieces under the action of stress. The fracture of a solid usually occurs due to the development of certain displacement discontinuity surfaces within the solid. If a displacement develops perpendicular to the surface, it is called a normal tensile crack or simply a crack; if a displacement develops tangentially, it is called a shear crack, slip band or dislocation. Brittle fractures occur with no apparent deformation before fracture. Ductile fractures occur after visible deformation. Fracture strength, or breaking strength, is the stress when a specimen fails or fractures. The detailed understanding of how a fracture occurs and develops in materials is the object of fracture mechanics. Strength Fracture strength, also known as breaking strength, is the stress at which a specimen fails via fracture. This is usually determined for a given specimen by a tensile test, which charts the stress–strain cu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micromechanics
Micromechanics (or, more precisely, micromechanics of materials) is the analysis of composite or heterogeneous materials on the level of the individual constituents that constitute these materials. Aims of micromechanics of materials Heterogeneous materials, such as composites, solid foams, polycrystals, or bone, consist of clearly distinguishable constituents (or ''phases'') that show different mechanical and physical material properties. While the constituents can often be modeled as having isotropic behaviour, the microstructure characteristics (shape, orientation, varying volume fraction, ..) of heterogeneous materials often leads to an anisotropic behaviour. Anisotropic material models are available for linear elasticity. In the nonlinear regime, the modeling is often restricted to orthotropic material models which does not capture the physics for all heterogeneous materials. Micromechanics goal is to predict the anisotropic response of the heterogeneous material on the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seismic Waves
A seismic wave is a wave of acoustic energy that travels through the Earth. It can result from an earthquake, volcanic eruption, magma movement, a large landslide, and a large man-made explosion that produces low-frequency acoustic energy. Seismic waves are studied by seismologists, who record the waves using seismometers, hydrophones (in water), or accelerometers. Seismic waves are distinguished from seismic noise (ambient vibration), which is persistent low-amplitude vibration arising from a variety of natural and anthropogenic sources. The propagation velocity of a seismic wave depends on density and elasticity of the medium as well as the type of wave. Velocity tends to increase with depth through Earth's crust and mantle, but drops sharply going from the mantle to Earth's outer core. Earthquakes create distinct types of waves with different velocities. When recorded by a seismic observatory, their different travel times help scientists locate the quake's hypocenter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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