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Vadim V. Silberschmidt

Bio: Vadim V. Silberschmidt is an academic researcher from Loughborough University. The author has contributed to research in topics: Machining & Materials science. The author has an hindex of 44, co-authored 543 publications receiving 8619 citations. Previous affiliations of Vadim V. Silberschmidt include University of Rhode Island & Universities UK.


Papers
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Journal ArticleDOI
TL;DR: In this article, the effects of particles on the performance of polyarylene ether nitrile (PEN) composite systems with functionalized aluminum nitride (AlN) were investigated.
Abstract: Aluminum nitride (AlN) with high thermal conductivity was blended in polyarylene ether nitrile (PEN) to obtain a composite system. A ball milling process could provide AlN particles of smaller size with higher surface silylation for homogeneous particle distribution in polymeric matrix. Thermal, electrical, and mechanical behaviors of the produced composites were characterized to investigate the effects of particles on the performance of PENbased composites with functionalized AlN. The composite exhibited thermal conductivity of 0.779 W m 21 K 21 ,a dielectric constant of 7.7, dielectric loss of 0.032, electrical resistivity of 1.39 GX.cm, and break strength of 36 N when the fraction of functionalized AlN increased to 42.3 vol%. A fitted equation based on the improved Russell’s model could effectively predict a trend for thermal conductivity of the composite systems with consideration of interfacial resistance between AlN and surrounding PEN. POLYM. COMPOS., 00:000–000, 2015. V C 2015 Society of Plastics Engineers

15 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of through-thickness compression on in-plane tensile strength of glass/epoxy composites with random microstructure was investigated experimentally.

15 citations

Journal ArticleDOI
TL;DR: In this article, the effect of the initial damage due to porosity on the processes of damage accumulation and failure is analyzed and a computational procedure for simulation of crack-damage interaction and crack propagation in porous alumina specimens at tension is suggested on the basis of a continuum-damage model, concept of local stress intensity factors and modification of a lattice scheme.

15 citations

Journal ArticleDOI
TL;DR: In this article, various aspects of cracking in salt rocks are studied both in situ and in laboratory tests for rocks of the world's largest Verkhnekamskoe potash-ore deposit (Russia).
Abstract: ¶The use of underground mines in salt-rock formations for waste repositories makes the precise analysis of isolation properties of rock salt very important. One of the main mechanisms responsible for a degradation of isolation ability of the rock salt is the generation and development of cracks under influence of mining processes. Various aspects of cracking in salt rocks are studied – both in situ and in laboratory tests – for rocks of the world's largest Verkhnekamskoe potash-ore deposit (Russia). It is shown that not all the discontinuities (fractures) are closed in the course of the creep deformation of rocks. Parameters of cracking are determined for various conditions: age of pillars, mining technology, etc. Different methods – filtration, electrometric, nuclear magnetic resonance, mechanical tests – are used for crack observation and characterisation, both in specimens and in situ. Traditional investigations (partly with specially designed equipment) are accomplished by the testing methods of fracture mechanics for determination of critical values of stress intensity factors KIc and KIIc. The problems and ways of the use of the obtained results in analysis of isolation properties for areas in vicinity of underground mines and/or waste repositories are discussed.

15 citations

Journal ArticleDOI
TL;DR: In this article, the authors studied the effect of a material's stochasticity on the characteristic features of crack propagation and on the crack front morphology and showed that the fractal dimension of a crack front is a fracture process invariant.

15 citations


Cited by
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01 May 1993
TL;DR: Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems.
Abstract: Three parallel algorithms for classical molecular dynamics are presented. The first assigns each processor a fixed subset of atoms; the second assigns each a fixed subset of inter-atomic forces to compute; the third assigns each a fixed spatial region. The algorithms are suitable for molecular dynamics models which can be difficult to parallelize efficiently—those with short-range forces where the neighbors of each atom change rapidly. They can be implemented on any distributed-memory parallel machine which allows for message-passing of data between independently executing processors. The algorithms are tested on a standard Lennard-Jones benchmark problem for system sizes ranging from 500 to 100,000,000 atoms on several parallel supercomputers--the nCUBE 2, Intel iPSC/860 and Paragon, and Cray T3D. Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems. For large problems, the spatial algorithm achieves parallel efficiencies of 90% and a 1840-node Intel Paragon performs up to 165 faster than a single Cray C9O processor. Trade-offs between the three algorithms and guidelines for adapting them to more complex molecular dynamics simulations are also discussed.

29,323 citations

Journal Article
TL;DR: This book by a teacher of statistics (as well as a consultant for "experimenters") is a comprehensive study of the philosophical background for the statistical design of experiment.
Abstract: THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

13,333 citations

Reference EntryDOI
31 Oct 2001
TL;DR: The American Society for Testing and Materials (ASTM) as mentioned in this paper is an independent organization devoted to the development of standards for testing and materials, and is a member of IEEE 802.11.
Abstract: The American Society for Testing and Materials (ASTM) is an independent organization devoted to the development of standards.

3,792 citations

Book ChapterDOI
01 Jan 1976
TL;DR: A positive temperature coefficient is the term which has been used to indicate that an increase in solubility occurs as the temperature is raised, whereas a negative coefficient indicates a decrease in Solubility with rise in temperature.
Abstract: A positive temperature coefficient is the term which has been used to indicate that an increase in solubility occurs as the temperature is raised, whereas a negative coefficient indicates a decrease in solubility with rise in temperature.

1,573 citations