D. Loison
YOU?
Author Swipe
View article: Experimental and numerical investigation of laser intensity distribution influence on laser pressure loading
Experimental and numerical investigation of laser intensity distribution influence on laser pressure loading Open
Laser shock applications are numerous and various. They all require to know how pressure loading—due to laser irradiation—is influenced by laser parameters. This study aims at analyzing the influence of laser intensity distribution on pres…
View article: Momentum Transfer During Laser-Driven Cratering Experiments
Momentum Transfer During Laser-Driven Cratering Experiments Open
The use of high power pulsed lasers to simulate hypervelocity impacts (HVI) was proposed several decades ago [1] and several studies were devoted to the analogy between laser-driven and real projectile cratering experiments. These studies,…
View article: Impulse coupling measurement of metallic and carbon targets during laser ablation through ballistic pendulum experiments and simulations
Impulse coupling measurement of metallic and carbon targets during laser ablation through ballistic pendulum experiments and simulations Open
Laser ablation propulsion and orbit cleaning are developing areas of research. The general aim of laser-based techniques applied to this field is to maximize the momentum transfer produced by a laser shot. This work presents results from b…
View article: Characteristics of femtosecond laser-induced shockwaves in air
Characteristics of femtosecond laser-induced shockwaves in air Open
Dynamic characteristics of femtosecond laser-generated shockwaves are investigated in ambient air. The experiments are performed using a 360-fs pulsed laser at a wavelength of 1.03 µm, with laser intensities up to 5 × 10 14 W/cm 2 (corresp…
View article: <i>In situ</i> radiographic and <i>ex situ</i> tomographic investigation of pore collapse in laser shock-loaded polyurethane foam
<i>In situ</i> radiographic and <i>ex situ</i> tomographic investigation of pore collapse in laser shock-loaded polyurethane foam Open
Laser-driven shock experiments were conducted at a synchrotron facility to investigate the dynamic response of polyurethane foam. These experiments were coupled to in situ x-ray imaging to radiograph foam deformations and to determine the …
View article: Femtosecond laser-generated shockwaves in transparent media: Experiments and Simulation
Femtosecond laser-generated shockwaves in transparent media: Experiments and Simulation Open
International audience
View article: X-ray powder diffraction in reflection geometry on multi-beam kJ-type laser facilities
X-ray powder diffraction in reflection geometry on multi-beam kJ-type laser facilities Open
An ultrafast x-ray powder diffraction setup for laser-driven dynamic compression has been developed at the LULI2000 laser facility. X-ray diffraction is performed in reflection geometry from a quasi-monochromatic laser-generated plasma x-r…
View article: Velocity and mass density of the ejecta produced from sinusoidal grooves in laser shock-loaded tin
Velocity and mass density of the ejecta produced from sinusoidal grooves in laser shock-loaded tin Open
When a shock wave of several tens of GPa breaks out at a free surface, a material is ejected ahead of this surface. The amount and velocity of such ejecta depend on the breakout pressure, state of the released material (solid, liquid, or m…
View article: Dynamic behaviour and spall fracture of laser shock-loaded AlSi10Mg alloy obtained by selective laser melting
Dynamic behaviour and spall fracture of laser shock-loaded AlSi10Mg alloy obtained by selective laser melting Open
International audience
View article: A Post Mortem Analysis of the Strain-Induced Crystallization Effects on Fatigue of Elastomers
A Post Mortem Analysis of the Strain-Induced Crystallization Effects on Fatigue of Elastomers Open
Natural rubber (NR) is the most commonly used elastomer in the automotive\nindustry thanks to its outstanding fatigue resistance. Strain-induced\ncrystallization (SIC) is found to play a role of paramount importance in the\ngreat crack gro…
View article: Investigating strain-induced crystallization through fatigue striations in filled NR
Investigating strain-induced crystallization through fatigue striations in filled NR Open
Natural Rubber (NR) exhibits a remarkable fatigue resistance, especially for non-relaxing loadings under which a strong lifetime reinforcement is observed (Cadwell et al. 1940). Such a resistance is classically attributed to strain-induced…
View article: Contribution to Fatigue Striation Phenomenon Analysis by Using Image Processing
Contribution to Fatigue Striation Phenomenon Analysis by Using Image Processing Open
International audience
View article: Effects of ZrCuAl bulk metallic glasses Poisson’s ratios on spalling process induced by laser shock
Effects of ZrCuAl bulk metallic glasses Poisson’s ratios on spalling process induced by laser shock Open
International audience
View article: Picosecond radiography combined with other techniques to investigate microjetting from laser shock-loaded grooves
Picosecond radiography combined with other techniques to investigate microjetting from laser shock-loaded grooves Open
International audience
View article: Numerical Simulations of Laser-Driven Cratering Experiments into Porous Graphite
Numerical Simulations of Laser-Driven Cratering Experiments into Porous Graphite Open
We present the results of an experimental campaign conducted on the LULI2000 laser facility. Semi-infinite targets of a commercial grade of porous graphite were submitted to high-power laser irradiation inorder to generate craters. A 15 ns…
View article: Investigating Ramp Wave Propagation inside Silica Glass with Laser Experiments and Molecular Simulations
Investigating Ramp Wave Propagation inside Silica Glass with Laser Experiments and Molecular Simulations Open
Under elastic shock compression silica glass exhibits a very specific behaviour. A shock propagating inside a material is usually seen as the propagation of a discontinuity. However in silica glass, shocks are unstable and lead to the prop…
View article: Ejecta from periodical grooves in tin foils under laser-driven shock loading
Ejecta from periodical grooves in tin foils under laser-driven shock loading Open
International audience
View article: Localized atomic segregation in the spalled area of a Zr<sub>50</sub>Cu<sub>40</sub>Al<sub>10</sub> bulk metallic glasses induced by laser-shock experiment
Localized atomic segregation in the spalled area of a Zr<sub>50</sub>Cu<sub>40</sub>Al<sub>10</sub> bulk metallic glasses induced by laser-shock experiment Open
Laser-shock experiments were performed on a ternary Zr50Cu40Al10bulk metallic glass. A spalling process was studied through post-mortem analyses conducted on a recovered sample and spall. Scanning electron microscopy magnification of fract…
View article: Silica Glass Structural Properties under Elastic Shock Compression: Experiments and Molecular Simulations
Silica Glass Structural Properties under Elastic Shock Compression: Experiments and Molecular Simulations Open
The behavior of silica glass material under shock compression has been investigated in this work. Laser-driven experiments and molecular dynamics simulations were combined to study the elastic regime of fused silica up to 8 GPa. Two simple…
View article: Soda-lime glass behavior under laser shock
Soda-lime glass behavior under laser shock Open
International audience
View article: Hydrodynamic simulations of microjetting from shock-loaded grooves
Hydrodynamic simulations of microjetting from shock-loaded grooves Open
International audience
View article: Experimental study of microjetting from triangular grooves in laser shock-loaded samples
Experimental study of microjetting from triangular grooves in laser shock-loaded samples Open
International audience
View article: Influence of edge conditions on material ejection from periodic grooves in laser shock-loaded tin
Influence of edge conditions on material ejection from periodic grooves in laser shock-loaded tin Open
In a material subjected to high dynamic compression, the breakout of a shock wave at a rough free surface can lead to the ejection of high velocity debris. Anticipating the ballistic properties of such debris is a key safety issue in many …
View article: New routes for improving adhesion at the metal/α-Al<sub>2</sub>O<sub>3</sub>(0001) interface
New routes for improving adhesion at the metal/α-Al<sub>2</sub>O<sub>3</sub>(0001) interface Open
Enrichment in transition metals improves adhesion at alumina/zinc interface.