Journal•ISSN: 1745-0055
International Journal of Materials and Structural Integrity
Inderscience Publishers
About: International Journal of Materials and Structural Integrity is an academic journal. The journal publishes majorly in the area(s): Band gap & Material selection. It has an ISSN identifier of 1745-0055. Over the lifetime, 212 publications have been published receiving 826 citations.
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TL;DR: In this paper, the effect of different preprocessing treatments on the incorporation of carbon nanofibres (CNFs) in cement composites was studied and the CNFs were found as individual fibres throughout the cement pastes and as entangled networks in pockets.
Abstract: The effect of different pre-processing treatments on the incorporation of carbon nanofibres (CNFs) in cement composites was studied. Surface treatment with nitric acid or pre-dispersion in acetone improved the dispersion of CNFs in the cement pastes. The CNFs were found as individual fibres throughout the cement pastes and as entangled networks in pockets. Though no significant change in the strength was observed, the presence of the CNFs modified the mechanical behaviour of the composite post testing.
35 citations
TL;DR: The general purpose computational model proves to be a useful tool for quantifying damage in nanoelectronics interconnects for coupled electromigration and thermo-mechanical stress evolution.
Abstract: Current density levels are expected to increase by orders of magnitude in nanoelectronics. Electromigration which occur under high current density is the major concern for the nanoelectronics industry. Using a general purpose computational model, which is capable of simulating coupled electromigration and thermo-mechanical stress evolution, several dual damascene copper interconnect structures have been investigated for electromigration damage. Different diffusion boundary conditions including blocking and non-blocking boundary conditions, current crowding effects, interface diffusion effects and material plasticity have been considered. Different damage criteria are used for quantifying material degradation. The computational simulation results match the experimental findings; therefore the model proves to be a useful tool for quantifying damage in nanoelectronics interconnects.
35 citations
TL;DR: In this paper, the authors present atomistic-based multi-scale simulation studies of a magnetically active array of carbon nanotubes to illustrate the concept of mechanomutability and show that applying external fields, it is possible to change the nanostructure and to induce a desired mechanical response.
Abstract: Here we present atomistic-based multi-scale simulation studies of a magnetically active array of carbon nanotubes to illustrate the concept of mechanomutability. We show that applying external fields, it is possible to change the nanostructure and to induce a desired mechanical response. Direct numerical simulations are reported that illustrate this concept via mechanical testing through nanoindentation. Specifically, the contact stiffness of an array of carbon nanotubes can be changed reversibly from approximately 73 MPa to 910 MPa due to the application of an external field. A hierarchical approach (coarse grain molecular modelling) is implemented to develop a framework that can successfully collaborate atomistic theory and simulations with material synthesis and physical experimentation, and facilitate the progress of novel mechanomutable structural materials.
26 citations
TL;DR: A comprehensive review of the literature that is enhancing our understanding of the mechanics of the rapidly growing field of micromachining has been provided in this article, where the main technological developments associated with cutting tools, tool materials, process conditions, experimental work, surface integrity and applications which have led to present day advancement are given detailed consideration.
Abstract: A comprehensive review of the literature, mostly of last 15 years, that is enhancing our understanding of the mechanics of the rapidly growing field of micromachining has been provided. The paper focuses only on tool based micromachining processes, namely, micro cutting and micro Electro Discharge Machining (micro EDM). The main technological developments associated with cutting tools, tool materials, process conditions, experimental work, surface integrity and applications which have led to present day advancement are given detailed consideration in this paper.
22 citations
TL;DR: In this article, the authors tried to solve the material selection problems using Complex proportional assessment (COPRAS) and complex proportional assessment with grey number (CopRAS-G) methods while considering different material selection criteria and their relative importance.
Abstract: Material selection plays an important role for cost-effective manufacturing of products leading to quality production and better utilisation of resources. Improper material selection may cause premature product failure. From a wide range of materials available in market, selection of the best material for a particular application is not an easy task. While selecting material, the designers need to take into account a large number of material selection criteria. Because of these reasons, material selection has got considerable attention by the academicians and researchers. This paper attempts to solve the material selection problems using complex proportional assessment (COPRAS) and complex proportional assessment with grey number (COPRAS-G) methods while considering different material selection criteria and their relative importance. The rankings obtained using these two methods almost corroborate with those derived by the past researchers. Two real time examples are illustrated to demonstrate the potenti...
21 citations