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Author: Harvey D. Solomon
Publisher: ASTM International
ISBN: 080310944X
Category : Engineering design
Languages : en
Pages : 1289
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Book Description
Author: Harvey D. Solomon
Publisher: ASTM International
ISBN: 080310944X
Category : Engineering design
Languages : en
Pages : 1289
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Book Description
Author: N. Eswara Prasad
Publisher: Elsevier Inc. Chapters
ISBN: 0128068493
Category : Technology & Engineering
Languages : en
Pages : 52
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Book Description
The low cycle fatigue (LCF) and high cycle fatigue (HCF) properties of Al–Li alloys are influenced by alloy composition, microstructural characteristics, tensile stretching prior to artificial aging, and crystallographic texture. In general the fatigue properties, notably the notched HCF resistances, of Al–Li alloys are similar to those of conventional aerospace aluminium alloys. Alloy development programs on newer Al–Li alloys aim to study further the effects of minor alloying additions (rare earths, beryllium, silver and TiB); various thermomechanical treatments; alloy microstructure, notably crystallographic texture and grain size; and the fatigue load history and environment on the mechanical behavior, including the fatigue properties. It is important to note that the occurrence of bilinearity in LCF life-dependence on strain amplitude in most Al–Li alloys engenders the overestimation of the LCF lives in both the hypo-transition (lower strain amplitudes; longer fatigue lives) and hyper-transition (higher strain amplitudes; shorter fatigue lives) regions if the lives are estimated by extrapolation from either of these regions. Further, in cases such as in Al-Li alloys where there are large differences in strength-based (Basquin-like) and plastic strain – based (Coffin-Manson) power-law relationships, it is appropriate to develop an alloy design philosophy based on either plastic strain energy per cycle (Halford-Morrow) or fatigue toughness (total plastic strain energy to fracture). All of these aspects are discussed in detail in this chapter.
Author: D. Aliaga
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 22
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Book Description
Tests of fatigue crack initiation are carried out on two different aluminum alloys by using low-cycle fatigue (LCF) data to predict initiation at notch tips with a radius between 0.1 and 10 mm. A comparison of the LCF properties of these alloys in terms of stress strain and cyclic plastic energy is made. Damage accumulation laws in the range of plastic strain and elastic stress are studied. Variable-amplitude loading represented by programmed blocks characterizing the standard TWIST flight loading are investigated. Fatigue crack initiation at notches is determined; initiation is detected by the electric potential method. It is found that the energy approach is an accurate method of determining a realistic cyclic mechanical behavior of aluminum alloys. Constant-amplitude loading of low ?K (stress intensity factor range) that causes no crack initiation decreases the number of cycles to crack initiation, when the loading program is composed of a higher ?K and this low ?K to form block loading.
Author: R. F. Brodrick
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
Author: Jennifer Lynn Walley
Publisher:
ISBN:
Category :
Languages : en
Pages : 268
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Book Description
Author: K. Detert
Publisher:
ISBN:
Category : Age-hardened Al-Mg-Si alloys
Languages : en
Pages : 11
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Book Description
The low cycle fatigue behavior of several age-hardened aluminum alloys with 1% Mg and 1% Si as alloying elements and varying Mn additions of up to 1% was studied. The alloy with the smallest grain size showed the highest strength as well as the highest low cycle fatigue strength. The number of cycles to failure represented by its dependency on strain range did not show any significant differences. However, one could derive from these results that one should try to reduce the number and size of inclusion particles in order to improve fatigue properties. In such a case one can expect that a small grain size of 20 ?m diameter, Mn additions of 0.2 to 0.5%, and a polished surface with a roughness below 0.5 ?m would be beneficial for low cycle fatigue properties.
Author: Raghavan Srinivasan
Publisher: Wiley-TMS
ISBN: 9781118257623
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Fatigue of Materials covers a broad spectrum of topics that represent the truly diverse nature of the subject that has grown to become a key area of scientific and applied research. Constituting an international forum for the materials industry, the book provides the perspectives of operators, engineers, and researchers regarding all aspects of current and emerging technologies for materials.
Author: John G. Macco
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
Low-cycle flexural fatigue tests, in air and in salt-water environments, were conducted in 1-inch-thick baseplate specimens made of 5086-H116 and 5456-H117 aluminum alloys. The results indicate that the fatigue resistance of both alloys is similar despite strength differences; and that, under the conditions of the test, low-cycle fatigue life is unaffected by the presence of salt water. The baseplate fatigue data will serve as a base line for use in evaluating the fatigue behavior of butt- and tee-weldments fabricated from the same alloys. (Author).
Author: Roger Lumley
Publisher: Elsevier
ISBN: 0857090259
Category : Technology & Engineering
Languages : en
Pages : 862
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Book Description
Aluminium is an important metal in manufacturing, due to its versatile properties and the many applications of both the processed metal and its alloys in different industries. Fundamentals of aluminium metallurgy provides a comprehensive overview of the production, properties and processing of aluminium, and its applications in manufacturing industries.Part one discusses different methods of producing and casting aluminium, covering areas such as casting of alloys, quality issues and specific production methods such as high-pressure diecasting. The metallurgical properties of aluminium and its alloys are reviewed in Part two, with chapters on such topics as hardening, precipitation processes and solute partitioning and clustering, as well as properties such as fracture resistance. Finally, Part three includes chapters on joining, laser sintering and other methods of processing aluminium, and its applications in particular areas of industry such as aerospace.With its distinguished editor and team of expert contributors, Fundamentals of aluminium metallurgy is a standard reference for researchers in metallurgy, as well as all those involved in the manufacture and use of aluminium products. - Provides a comprehensive overview of the production, properties and processing of aluminium, and its applications in manufacturing industries - Considers many issues of central importance in aluminium production and utilization considering quality issues and design for fatigue growth resistance - Metallurgical properties of aluminium and its alloys are further explored with particular reference to work hardening and applications of industrial alloys
Author: D. Maity
Publisher: Springer
ISBN: 9789811667404
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
This book (Vol. - I) presents select proceedings of the first Online International Conference on Recent Advances in Computational and Experimental Mechanics (ICRACEM 2020) and focuses on theoretical, computational and experimental aspects of solid and fluid mechanics. Various topics covered are computational modelling of extreme events; mechanical modelling of robots; mechanics and design of cellular materials; mechanics of soft materials; mechanics of thin-film and multi-layer structures; meshfree and particle based formulations in continuum mechanics; multi-scale computations in solid mechanics, and materials; multiscale mechanics of brittle and ductile materials; topology and shape optimization techniques; acoustics including aero-acoustics and wave propagation; aerodynamics; dynamics and control in micro/nano engineering; dynamic instability and buckling; flow-induced noise and vibration; inverse problems in mechanics and system identification; measurement and analysis techniques in nonlinear dynamic systems; multibody dynamical systems and applications; nonlinear dynamics and control; stochastic mechanics; structural dynamics and earthquake engineering; structural health monitoring and damage assessment; turbomachinery noise; vibrations of continuous systems, characterization of advanced materials; damage identification and non-destructive evaluation; experimental fire mechanics and damage; experimental fluid mechanics; experimental solid mechanics; measurement in extreme environments; modal testing and dynamics; experimental hydraulics; mechanism of scour under steady and unsteady flows; vibration measurement and control; bio-inspired materials; constitutive modelling of materials; fracture mechanics; mechanics of adhesion, tribology and wear; mechanics of composite materials; mechanics of multifunctional materials; multiscale modelling of materials; phase transformations in materials; plasticity and creep in materials; fluid mechanics, computational fluid dynamics; fluid-structure interaction; free surface, moving boundary and pipe flow; hydrodynamics; multiphase flows; propulsion; internal flow physics; turbulence modelling; wave mechanics; flow through porous media; shock-boundary layer interactions; sediment transport; wave-structure interaction; reduced-order models; turbo-machinery; experimental hydraulics; mechanism of scour under steady and unsteady flows; applications of machine learning and artificial intelligence in mechanics; transport phenomena and soft computing tools in fluid mechanics. The contents of these two volumes (Volumes I and II) discusses various attributes of modern-age mechanics in various disciplines, such as aerospace, civil, mechanical, ocean engineering and naval architecture. The book will be a valuable reference for beginners, researchers, and professionals interested in solid and fluid mechanics and allied fields.
