Use of laser-accelerated foils for impact study of dynamic material behaviour

Rességuier, T. de; He, Hongliang; Berterretche, P.

doi:10.1016/j.ijimpeng.2004.07.003

Cited by 22 publications

(10 citation statements)

References 19 publications

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“…A first set of low pressure shots was performed with a tabletop laser at Institut Pprime [19], delivering a pulse of 1.06 μm-wavelength, about 20 J-energy and 25 ns-duration focused on a spot of 4 mm-diameter. A water drop was put on top of the irradiated surface to confine the plasma expansion, in order to increase both the amplitude and the duration of the resulting pressure pulse [20], about 2.5 GPa and 50 ns, respectively.…”

Section: Methodsmentioning

confidence: 99%

Effects of additive manufacturing on the dynamic response of AlSi10Mg to laser shock loading

Laurençon

Rességuier

Loison

et al. 2019

Materials Science and Engineering: A

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In this study, the dynamic behaviour of light aluminum alloy AlSi10Mg obtained by additive manufacturing was investigated under laser shock loading. Two types of AlSi10Mg specimens were obtained by Selective Laser Melting (SLM) with two sets of building parameters, leading to specific architecture and microstructure compared to classical manufacturing processes. Their dynamic response to laser driven shocks was investigated on the basis of time-resolved measurements of free surface velocity, transverse visualization of shock-induced fragmentation, and post-recovery observations by means of microscopy. The results reveal a significant influence of the building parameters and SLM-inherited defects on both yield strength and spall strength values, as well as a strong dependence of high rate fracture behaviour on building direction of the material, mainly governed by melt pools shape and dissymmetry, with a combination of "interpool" and "intrapool" fracture modes.

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Section: Methodsmentioning

confidence: 99%

Effects of additive manufacturing on the dynamic response of AlSi10Mg to laser shock loading

Laurençon

Rességuier

Loison

et al. 2019

Materials Science and Engineering: A

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“…High pressure shock loading of the Ni-alloy targets was achieved through planar impact of thin Al foils accelerated by pulsed laser ablation in confined geometry. This technique has been widely used in the past to investigate shock initiation of condensed explosives 30,31 and more generally the dynamic behavior of condensed matter [32][33][34][35] .…”

Section: Experimental Techniquesmentioning

confidence: 99%

Dynamic response of wrought and additively manufactured nickel-based alloys to high velocity impacts of laser-launched flyers

Barraud

Rességuier

Baillargeat

et al. 2022

Journal of Applied Physics

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Although nickel-based superalloys are widely used in the industry, their response to shock loading is still rarely investigated. Here, the impacts of laser-launched flyers were used to study the dynamic behavior of a Rene 65 superalloy under shock pressures of about 10 GPa at very high strain rates of about 106 s−1. Three types of samples, wrought or additively manufactured (laser powder bed fusion) and subjected to different heat treatment conditions, were investigated. These experiments allowed the measurement of the Hugoniot elastic limit (compressive yield strength) and the spall (tensile) strength, both in upper ranges compared with the most common metals. Post-recovery analyses involving various techniques provided insight into dynamic failure with a combination of transgranular ductile fracture and intergranular cracks with preferential nucleation sites, strongly dependent on the different microstructures related to fabrication routes and thermal treatments.

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“…Such loading techniques can achieve strain rates as high as 10 7 s −1 or more, but can make specimen recovery difficult due to the large kinetic energies from loading. Instead, laser-driven approaches have been sparingly employed in recent spall studies to improve experimental throughput and impart less kinetic energy upon the specimen than through conventional experimental techniques [5][6][7][8][9][10][11][12][13][14][15][16]. Peralta et al and Wayne et al [11,12] used the Trident laser facility at Los Alamos National Laboratory with the goal of causing "incipient" spallation in copper polycrystals.…”

Section: Introductionmentioning

confidence: 99%

Estimating Void Nucleation Statistics in Laser-Driven Spall

Mallick

Parker

Wilkerson

et al. 2020

J. dynamic behavior mater.

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We examine the statistical distribution of critical nucleation pressures necessary to dynamically grow voids during the spall failure of an AZ31B magnesium alloy. The approach uses laser-driven micro-flyers to generate spall over times of the order of tens of nanoseconds, allowing us to focus on void nucleation processes rather than void coalescence processes. Our methodology combines quantitative postmortem characterization of void mediated failure with time-resolved interferometry of the failure event, and reveals the dynamics of the failure process. We infer the distribution of the underlying nucleation pressures and explore the associated strain rate dependence of spall strength in these alloys.

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Use of laser-accelerated foils for impact study of dynamic material behaviour

Cited by 22 publications

References 19 publications

Effects of additive manufacturing on the dynamic response of AlSi10Mg to laser shock loading

Effects of additive manufacturing on the dynamic response of AlSi10Mg to laser shock loading

Dynamic response of wrought and additively manufactured nickel-based alloys to high velocity impacts of laser-launched flyers

Estimating Void Nucleation Statistics in Laser-Driven Spall

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