Buscador de Tesis y publicaciones académicas

Enhanced machinability of additively manufactured Ti-5553 tailored with Mo

Chi-Ho Ng · M․Adeel Zafar · Mandeep Singh · Matthew S. Dargusch · y 1 más

Tailoring the composition of titanium alloys with strategic additives to refine microstructure and enhance performance is a promising approach to overcome limitations associated with conventional alloy systems. Among these, molybdenum (Mo) has recently emerged as a potent bifunctional additive that promotes grain refin...

Microstructural evolution of a spinodal Cu-Ni-Sn alloy

Annie ANDERSSON · Howard STONE · Catherine DEJOIE · Jamie HOGG · y 1 más

Spinodal Cu Ni Sn alloys are widely used for bushings and bearings in aerospace and automotive applications. However, their susceptibility to softening and embrittlement during thermal exposure presents a commercial challenge. These changes have been linked to over-ageing, accompanied by discontinuous precipitation, wh...

A data-driven interpolation method on smooth manifolds via diffusion processes and voronoi tessellations

Alvaro Almeida Gomez

We propose a data-driven interpolation framework for reconstructing real-valued functions on smooth manifolds from scattered pointwise observations. The method combines a Gaussian Nadaraya--Watson kernel interpolant with a Voronoi-adaptive bandwidth determined entirely by the geometry of the sampled data, yielding an e...

Degree bounds for linear differential equations and recurrences

Gaillard, Louis

Linear differential equations and recurrences reveal many properties about their solutions. Therefore, these equations are well-suited for representing solutions and computing with special functions. We identify a large class of existing algorithms that compute such representations as a linear relation between the iter...

An experimental investigation on the relationship between seat pan and seat back angles to eliminate the shear force on the seat pan

Hu, Feng · Guilloteau, Lucas · Mouty, Emma · Theodorakos, Ilias · y 4 más

This work aimed to establish the relationship between seat back and seat pan angles to eliminate the seat pan shear force for a large range of seat configurations. Thirty-nine volunteers participated in the experiment. A reconfigurable experimental seat was used. Seven seat back angles ranging from 0 (vertical) to 60°...

Classification of polyhedral graphs by numbers of common neighbours

Maffucci, Riccardo W.

We propose a classification of polyhedra (planar, $3$-connected graphs) according to their type i.e., their set of quantities of common neighbours for each pair of distinct vertices. For every (finite) set of non-negative integers, we either classify all the polyhedra of that type, or construct infinitely many polyhedr...

Low temperature vibrational instabilities of MoSe2

Daniel CHANEY · Eva Arianna Aurelia POGNA · Eugenio Luigi CINQUANTA

This proposal seeks to understand how the lattice dynamics of hexagonal MoSe2 changes with temperature. Inelastic xray scattering (IXS) measurements (beamtime HC-5550), has recenlty revealed for the first time a dramatic softening of the transverse acoustic mode of MoSe2 at the M point upon temperature reduction to 80K...

Influence of installation and humidity conditions on the sound absorption coefficient of aeronautical glass wool: An experimental and machine-learning-based study

Alfonso Caiazzo · Giuseppe Petrone · Alessandro Casaburo · Immacolata Climaco · y 1 más

XMCD of multiferroic CoCr2O4 and Fe-doped CoCr2O4

RACHEL NICKEL

CoCr2O4 is a multiferroic material known to exhibit altered properties as a result of strain. Here we propose to study CoCr2O4 epitaxial thin films with and without Fe-doping. By measuring the elemental magnetism above and below the magnetic transition we will gain insights into the magnetic ordering including sublatti...

Mapping and speciation of cadmium in marine sediments: A key to understanding ancient ocean chemistry

Hannah ELMS (ORCID: 0000-0003-0103-044X) · Olivier MATHON · Alexander DICKSON · Anthony CHAPPAZ

The isotopic composition of cadmium in the oceans (δ114/110Cd) has been proposed as a proxy for ancient nutrient utilization, primary productivity and global-scale marine organic carbon burial. The development of this proxy, however, is held back by not having a detailed understanding of how Cd is buried into marine se...