F. De Cola

F. De Cola
University of Oxford | OX · Department of Engineering Science

DPhil, BSc and MSc in Aerospace Engineering

About

12
Publications
1,468
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
106
Citations

Publications

Publications (12)
Article
In this work we present a new experimental technique alternative to Acoustic Emissions, which makes use of sound signal sensing, to complement the assessment of the mechanical behaviour of sand grains. A post-processing protocol is also proposed. By using this technique in combination with microscopy during in-situ compression tests, it was possibl...
Article
Full-text available
In this work, we explore the application of the novel technique Sound Measurements (SM) on E-glass fibre bundles. This technique relies on the ability to capture the sound emitted when fibres break. The method was used to monitor the failure of fibres and to generate a set of effective values of strength for the glass fibres within a bundle. The nu...
Conference Paper
The process of comminution, occurring during compaction and impact on granular media, affects dramatically the mechanical response of the materials. The adoption of rigid particles—common in DEM simulations—fails to reproduce accurately the grain fracture. The often-adopted solutions of replacing a broken particle with a cluster of either overlappi...
Article
The effect of grain shape, size distribution, intergranular friction, confinement, and initial compaction state on the high strain rate compressive mechanical response of sand is quantified using Long Split Hopkinson Pressure Bar (LSHPB) experiments, generating up to 1.1 ms long load pulses. This allowed the dynamic characterisation of different ty...
Article
Voronoi tessellation techniques are widely accepted methods for the generation of representative models of polycrystalline microstructures of metallurgic and ceramic materials. Contrary to most of the Voronoi-based tessellation methods developed, the Laguerre Voronoi technique provides control over the size and shape of the cells, therefore allowin...
Article
The morphology of many naturally occurring and man-made materials at different length scales can be modelled using the packing of correspondingly shaped and sized particles. The mechanical behaviour of this vast category of materials - which includes granular media, particle reinforced materials and foams - depends strongly upon the shape and size...
Article
Full-text available
A new procedure for the determination of the smallest Representative Volume Element (RVE) of granular media is proposed in the present investigation. The procedure is based on the simulation of consolidated granular assemblies using the Discrete Element Method (DEM). The existence of a lower limit for the dimensions of specimens used in the high-st...
Article
Quasi static and dynamic experiments were conducted to characterise the mechanical response of Etnean volcanic sand. Stress and strain histories were measured in near-uniaxial strain and near-uniaxial stress conditions at strain rates ranging between 5·10−4 and 1.5·103 s−1 using bespoke experimental setups. The effects of the lateral confinement an...
Article
The ability to model impact and penetration behaviour of granular materials – such as sand – largely depends on the understanding of the stress–strain and volume change characteristics at high strain rates. Split Hopkinson Pressure Bar has been used extensively in the past to evaluate strain rate dependent constitutive response of a wide range of a...
Conference Paper
Full-text available
A new procedure for the determination of the smallest Representative Volume Element (RVE) of granular media is proposed in the present investigation. The procedure is based on the simulation of consolidated granular assemblies using the Discrete Element Method (DEM). The existence of a lower limit for the dimensions of specimens used in the high-st...
Presentation
Full-text available
The conference focuses on research which advances experimental techniques across the very widest range of applications in mechanics, including stress, strain and vibration analysis.
Article
The morphology of many natural and man-made materials at different length scales can be simulated using particle-packing methods. This paper presents two novel 3D geometrical collective deposition algorithms for packed assemblies with prescribed distribution of radii: the “planar deposition” and the “3D-clew” method. The “planar deposition” method...

Network

Cited By