In this research, the feasibility of using mathematical modelling in the ball milling process has been evaluated to verify the hardness changes of an aluminium nanostructure. Considering the model of normal force displacement (NFD), the radius of elastic-plastic and normal displacement of two balls were computed by applying analytical modelling and coding in MATLAB. Properties of balls and alum...

An effective combination of oxidation medium, ball milling parameters, and copper additive disperstiy ensuring fast aluminum scrap reaction with high hydrogen yield, was suggested. Different parameters (5, 10, 15 mm steel balls; 1 2 h; unidirectional bidirectional rotation modes) were tested for Al-10 wt.% Cu (50–70 μm) composition. The samples milled 5 (2 h) 10 (1 balls contained undesirable i...

Crumpled graphite thin film balls were fabricated with Panasonic Pyrolytic Graphite Sheets (PGS). The fractal dimension, mechanical properties, and electrical conductivity of the crumpled PGS balls have been investigated. The universal local fractal dimension of the PGS balls is found to be 2.58, which is consistent with that of paper balls. The crumpled PGS balls show good mechanical property ...

Well prior to the invention of the term ̳biology‘ in the early 1800s by Lamarck and Treviranus, and also prior to the appearance of terms such as ̳organism‘ under the pen of Leibniz in the early 1700s, the question of ̳Life‘, that is, the status of living organisms within the broader physico-mechanical universe, agitated different corners of the European intellectual scene. From modern Epicureanis...

Renowned physician and scientist William Harvey [4] is best known for his accurate description of how blood circulates through the body. While his published work on the circulation of blood is considered the most important of his academic life, Harvey also made significant contributions to embryology [5] with the publication of his book Exercitationes de Generatione Animalium [6] in 1651. In th...

Todd Karin, ∗ Xiayu Linpeng, ∗ M.M. Glazov, M.V. Durnev, E.L. Ivchenko, Sarah Harvey, Ashish K. Rai, Arne Ludwig, Andreas D. Wieck, and Kai-Mei C. Fu 4 Department of Physics, University of Washington, Seattle, Washington 98195, USA Ioffe Institute, 194021 St.-Petersburg, Russia Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, D-44870 Bochum, Germany Department of Electrical E...

Friction losses are an important parameter for evaluating the operational behaviour of high-speed rolling bearings. Specifically, in machine tool applications, bearings subjected to high radial loads and speeds, which lead increased forces contact and, as a result, bearing friction. In this application, hybrid spindle bearings, typically made ceramic balls steel raceways, show better frictional...

Abstract A metastable polymorph of Ti 3 Sn (called c-Ti Sn) exhibiting the cubic Cr Si-type structure was prepared by a mechanochemical route. At temperatures about 450 °C, it transforms to well-known hexagonal phase (Ni type, called h-Ti Sn). 0.5% iron incorporated into material originating from steel beaker and balls. However, quantum-chemical calculations show that this should not lead stabi...

MoAlB ceramic coatings were prepared on a 316 steel surface by atmospheric plasma spraying with different arc power levels. The phase composition, microstructure and wear resistance of against GCr15 Si3N4 counterparts studied. decomposed was oxidized to form MoB Al2O3 during spraying. With the increase power, experienced more decomposition, but became denser. When increased from 30 36 kW, rates...

Abstract This study created a composite polymer for 3D printing from agave by-product using mechanical alloying process. The cold milling technique used by the ball mill is standard procedure to homogenize metallic mixtures. paper reports results series of laboratory tests create homogeneous mixture that could be extruded into printable filament bagasse fibres and PLA pellets kinetic energy mil...