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Elastic modulus
About: Elastic modulus is a research topic. Over the lifetime, 33153 publications have been published within this topic receiving 810247 citations.
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TL;DR: In this article, an easily-prepared self-blowing system based on low-cost precursors, mainly tannin and furfuryl alcohol, was pyrolysed at 900°C.
194 citations
TL;DR: In this article, a critical review on the validity of different experimental and theoretical approaches to the mechanical properties of carbon nanotubes for advanced composite structures is presented, which can be used to further decrease the processing time for calculating the mechanical features.
Abstract: A critical review on the validity of different experimental and theoretical approaches to the mechanical properties of carbon nanotubes for advanced composite structures is presented. Most research has been recently conducted to study the properties of single-walled and multi-walled carbon nanotubes. Special attention has been paid to the measurement and modeling of tensile modulus, tensile strength, and torsional stiffness. Theoretical approaches such as molecular dynamic (MD) simulations, finite element analysis, and classical elastic shell theory were frequently used to analyze and interpret the mechanical features of carbon nanotubes. Due to the use of different fundamental assumptions and boundary conditions, inconsistent results were reported. MD simulation is a well-known technique that simulates accurately the chemical and physical properties of structures at atomic-scale level. However, it is limited by the time step, which is of the order of 10 −15 s. The use of finite element modeling combined with MD simulation can further decrease the processing time for calculating the mechanical properties of nanotubes. Since the aspect ratio of nanotubes is very large, the elastic rod or beam models can be adequately used to simulate their overall mechanical deformation. Although many theoretical studies reported that the tensile modulus of multi-walled nanotubes may reach 1 TPa, this value, however, cannot be directly used to estimate the mechanical properties of multi-walled nanotube/polymer composites due to the discontinuous stress transfer inside the nanotubes.
194 citations
194 citations
TL;DR: In the lamellipodal region investigated here in detail, the elastic moduli range from around 10 up to 200 kPa on top of stress fibers, which means that to what extent the elastic properties of this type of cell are determined by the actin network is unknown.
193 citations
TL;DR: The ultraincompressible transition metal diborides RuB 2, OsB 2 and ReB 2 were synthesized by arc melting the elemental metals and boron under an argon atmosphere at ambient pressure as discussed by the authors.
Abstract: The ultraincompressible transition metal diborides RuB 2 , OsB 2 , and ReB 2 were synthesized by arc melting the elemental metals and boron under an argon atmosphere at ambient pressure The hardness and Young’s modulus were measured using nanoindentation with a Berkovich diamond indenter The bulk modulus and shear modulus were derived based on an isotropic model and then plotted as a function of hardness A strong correlation is observed between the hardness and shear modulus for these transition metal diborides © 2008 American Institute of Physics DOI: 101063/12946665
193 citations