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Author: R. A. Schapery
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
The elements of a theory for elastic composites with a changing microstructure, such as microcracking, are reviewed. This formulation, which uses internal state variables and potentials like strain energy and work, is then illustrated by mathematically characterizing and predicting the damage and deformation behavior of particle-filled rubber under axial straining and confining pressure. Next, a micromechanical model, which accounts for effects of distributed microcracks and particles on overall deformation behavior, is described and shown to be in agreement with experimental findings. It is then indicated how this model may be combined with the potential theory to extend the results from specimens under axial straining and pressure to more general strain states. Keywords: Particulate composites, Damage, Micromechanics, Rubber, Continuum damage mechanics. (JES).
Author: R. A. Schapery
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
The elements of a theory for elastic composites with a changing microstructure, such as microcracking, are reviewed. This formulation, which uses internal state variables and potentials like strain energy and work, is then illustrated by mathematically characterizing and predicting the damage and deformation behavior of particle-filled rubber under axial straining and confining pressure. Next, a micromechanical model, which accounts for effects of distributed microcracks and particles on overall deformation behavior, is described and shown to be in agreement with experimental findings. It is then indicated how this model may be combined with the potential theory to extend the results from specimens under axial straining and pressure to more general strain states. Keywords: Particulate composites, Damage, Micromechanics, Rubber, Continuum damage mechanics. (JES).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 456
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: FIB – International Federation for Structural Concrete
Publisher: FIB - Féd. Int. du Béton
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 541
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Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1380
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Damage evolution in a particulate composite around a notch tip was studied. The composite had hard and stiff particles embedded in a soft and weak matrix like a rubber material. The major damage modes were the interface debonding called dewetting and the resulting matrix cracking because the particles were much stronger than the matrix. A numerical modeling and simulation of such damage was conducted using the micro/macro-approach. This technique combined micro-level analysis and macro-level analysis. Damage was described at the micro-level using a damage theory. Damage initiation and growth at a circular notch tip were predicted from the numerical study, and their results were compared with experimental data. Both results compared very well.
Author: Charles Bakis
Publisher: DEStech Publications, Inc
ISBN: 1605951072
Category : Technology & Engineering
Languages : en
Pages : 1892
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Book Description
New and unpublished U.S. and international research on multifunctional, active, biobased, SHM, self-healing composites -- from nanolevel to large structures New information on modeling, design, computational engineering, manufacturing, testing Applications to aircraft, bridges, concrete, medicine, body armor, wind energy This fully searchable CD-ROM contains 135 original research papers on all phases of composite materials. The document provides cutting edge research by US, Canadian, and Japanese authorities on matrix-based and fiber composites from design to damage analysis and detection. Major divisions of the work include: Structural Health Monitoring, Multifunctional Composites, Integrated Computational Materials Engineering, Interlaminar Testing, Analysis-Shell Structures, Thermoplastic Matrices, Analysis Non-classical Laminates, Bio-Based Composites, Electrical Properties, Dynamic Behavior, Damage/Failure, Compression-Testing, Active Composites, 3D Reinforcement, Dielectric Nanocomposites, Micromechanical Analysis, Processing, CM Reinforcement for Concrete, Environmental Effects, Phase-Transforming, Molecular Modeling, Impact.
Author: American Society of Mechanical Engineers. Winter Annual Meeting
Publisher: American Society of Civil Engineers
ISBN:
Category : Science
Languages : en
Pages : 180
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
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Book Description
In recent years, fibrous composite materials have been widely used in aerospace and automobile industries due to their high modulus and strength to weight ratio. Particulate composites, though not as effective as the continuous fibrous composites in improving modulus and strength of the matrix materials, are also widely used in construction and commodity industries for their improved performance over the matrix material in, for example, thermal and electrical conductivities, friction and wear resistance, machinability, surface hardness, and cost effective. However, much of the studies about the particle reinforced polymeric composites are on the derivation of the effective elastic properties and the development of the constitutive models of the materials. In recent years, a considerable amount of work has been done in studying the crack growth behavior in highly filled polymeric materials. These materials consist of hard particles contained in a soft elastomeric binder. Experimental results indicate that power law relationships exist between the crack growth rate and the Mode I stress intensity factor which are consistent with the theories developed by Knauss and Schapery in their study of crack growth in viscoelastic materials.
Author:
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 772
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Book Description
Author: K. Reifsnider
Publisher: ASTM International
ISBN: 9780803106963
Category : Technology & Engineering
Languages : en
Pages : 298
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Book Description
