Daniel Eakins
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View article: Unveiling temperature and phase boundaries in laser-driven shocked and released copper: insights from ultra-fast X-ray Absorption Spectroscopy up to 300 GPa
Unveiling temperature and phase boundaries in laser-driven shocked and released copper: insights from ultra-fast X-ray Absorption Spectroscopy up to 300 GPa Open
Cu is an ubiquitous material used in industry for its great thermal and electrical properties. Studying the high-pressure high temperature properties of copper (Cu) is relevant for nuclear fusion research as projectiles and flyers used in …
View article: New Constraints on the Melting Temperature and Phase Stability of Shocked Iron up to 270 GPa Probed by Ultrafast X-Ray Absorption Spectroscopy
New Constraints on the Melting Temperature and Phase Stability of Shocked Iron up to 270 GPa Probed by Ultrafast X-Ray Absorption Spectroscopy Open
Studying the properties and phase diagram of iron at high-pressure and high-temperature conditions has relevant implications for Earth’s inner structure and dynamics and the temperature of the inner core boundary (ICB) at 330 GPa. Also, a …
View article: Development of MHz X-ray phase contrast imaging at the European XFEL
Development of MHz X-ray phase contrast imaging at the European XFEL Open
We report on recent developments that enable megahertz hard X-ray phase contrast imaging (MHz XPCI) experiments at the Single Particles, Clusters, and Biomolecules and Serial Femtosecond Crystallography (SPB/SFX) instrument of the European…
View article: Effect of Dislocation Density on the Dynamic Strength of Aluminium
Effect of Dislocation Density on the Dynamic Strength of Aluminium Open
The effects of cold work on dynamic flow strength is studied through measurements of dislocation density and elastic precursor attenuation in shocked aluminium. High-purity aluminium and Al 6082 alloy samples are subjected to up to three p…
View article: Redesigning the electric gun: Launching thick flyers to hypervelocity with high efficiency
Redesigning the electric gun: Launching thick flyers to hypervelocity with high efficiency Open
To investigate pressure states as extreme as those involved in inertial confinement fusion using projectile-driven impact, the projectile must be both moving at hypervelocity and thick enough to introduce a shock pulse sufficiently long as…
View article: The effects of submerged laser peening, cavitation peening, and shot peening on the improvement of the torsional fatigue strength of powder bed fused Ti6Al4V produced through laser sintering
The effects of submerged laser peening, cavitation peening, and shot peening on the improvement of the torsional fatigue strength of powder bed fused Ti6Al4V produced through laser sintering Open
This study demonstrates the improvement in the fatigue strength of additive manufacturing (AM) metals such as laser-based powder bed fusion of metals by post-processing. Titanium alloy samples manufactured by powder bed fused (PBF) Ti6Al4V…
View article: Effect of temperature on high strain-rate damage evolving in CFRP studied by synchrotron-based MHz X-ray phase contrast imaging
Effect of temperature on high strain-rate damage evolving in CFRP studied by synchrotron-based MHz X-ray phase contrast imaging Open
International audience
View article: Raster approach to modelling the failure of arbitrarily inclined interfaces with structured meshes
Raster approach to modelling the failure of arbitrarily inclined interfaces with structured meshes Open
This paper presents an approach to evaluate the failure of arbitrarily inclined interfaces using FE models with structured spatial discretization, providing accurate prediction of crack propagation along paths known a priori that are not c…
View article: Revealing the origins of vortex cavitation in a Venturi tube by high speed X-ray imaging
Revealing the origins of vortex cavitation in a Venturi tube by high speed X-ray imaging Open
Hydrodynamic cavitation is useful in many processing applications, for example, in chemical reactors, water treatment and biochemical engineering. An important type of hydrodynamic cavitation that occurs in a Venturi tube is vortex cavitat…
View article: The effect of current rise time on the acceleration of thick flyers to hypervelocities using an electric gun
The effect of current rise time on the acceleration of thick flyers to hypervelocities using an electric gun Open
The electric gun is a projectile launcher which utilises both the rapid expansion of an ohmically heated exploding foil and strong electromagnetic forces to accelerate an insulating flyer up to 20 km/s. The gun’s acceleration mechanism is …
View article: Role of Crystal Orientation in the Dynamic Strength of Magnesium Alloy AZ31B
Role of Crystal Orientation in the Dynamic Strength of Magnesium Alloy AZ31B Open
The effect of grain orientation distribution on the dynamic strength of highly textured magnesium alloy AZ31B has been studied in a series of plate-impact experiments. Specimens with thicknesses between 0.45 mm and 2 mm were cut parallel a…
View article: ssgg20230512s01
ssgg20230512s01 Open
Data collected at the ESRF ID19 beamline on 12 May 2023.
View article: ssgg20230512s01
ssgg20230512s01 Open
Data collected at the ESRF ID19 beamline on 12 May 2023.
View article: Thermoreflectance-based approach for surface temperature measurements of thin-film gold sensors
Thermoreflectance-based approach for surface temperature measurements of thin-film gold sensors Open
A novel thermoreflectance-based diagnostic tool capable of visualizing spatial and temporal changes in surface temperature is presented. The method uses narrow spectral emission bands of blue [λ = 405 nm with 10 nm full-width-at-half-maxim…
View article: Measuring the principal Hugoniot of inertial-confinement-fusion-relevant TMPTA plastic foams
Measuring the principal Hugoniot of inertial-confinement-fusion-relevant TMPTA plastic foams Open
Wetted-foam layers are of significant interest for inertial-confinement-fusion capsules, due to the control they provide over the convergence ratio of the implosion and the opportunity this affords to minimize hydrodynamic instability grow…