Laser-Driven Flat Plate Impacts to 100 Gpa With Sub-Nanosecond Pulse Duration and Resolution for Material Property Studies

Paisley, Dennis L.; Warnes, R. H.; Kopp, R. A.

doi:10.1016/b978-0-444-89732-9.50189-8

Cited by 35 publications

(18 citation statements)

References 3 publications

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“…With decreasing the load duration the resistance of Cu + 0.1% Si to spall fracture grows rapidly and approaches the strength of pure single crystals. Spall strength of copper with Paisley et al (1992) SiO 2 particles grows much slower and becomes close to that of polycrystalline copper at higher rarefaction rates. Figure 21 compares the fracture surfaces of Cu + 0.1% Si and Cu + SiO 2 samples.…”

Section: Approach To the "Ideal" Strength Of Condensed Mattermentioning

confidence: 89%

Spall fracture: methodological aspects, mechanisms and governing factors

Kanel

2010

Int J Fract

239

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The dynamic tensile strength of materials at load durations of a few microseconds or less is studied by analyzing the spall phenomena under shock pulse loading. The paper is devoted to discussing the methodology and capabilities of the technique to measure spall strength, its error sources, spall fracture of materials of different classes and the factors governing the high-rate fracture of metals and alloys under such conditions.

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Section: Approach To the "Ideal" Strength Of Condensed Mattermentioning

confidence: 89%

Spall fracture: methodological aspects, mechanisms and governing factors

Kanel

2010

Int J Fract

239

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“…This shock wave generator, sometimes called laser gun, or laser-driven miniflyer, has been widely used to study the shock initiation of condensed explosives [1,2], where varying and controlling the peak pressure and its time of application are key issues. Considering the small dimensions involved (of millimetreorder), the low cost of laser shots and their high repetition rate, such impacts can also be used to investigate the response of solid materials to shock loading [3][4][5], as an alternative technique to the conventional plate impact tests, involving heavier apparatus such as gas guns. However, potential problems like projectile planarity before impact, which has been shown to depend critically on the spatial uniformity of the laser pulse [6], accurate control of the projectile velocity, or influence of the air layer compressed between the flyer and target should be addressed to obtain useful experimental data.…”

Section: Introductionmentioning

confidence: 99%

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

Rességuier¹,

He²,

Berterretche³

2005

International Journal of Impact Engineering

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“…which is [14][15][16][17][18][19][20] GPa for alumina single crystals [23]. Figure 1.15 shows the result of an experiment at a shock intensity of 13.5 GPa.…”

Section: Brittle Single Crystals and Glassesmentioning

confidence: 99%

Spallation in Solids Under Shock-Wave Loading: Analysis of Dynamic Flow, Methodology of Measurements, and Constitutive Factors

Kanel¹,

Разоренов²,

Уткин³

1996

High-Pressure Shock Compression of Solids II

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Spallation occurs when two rarefaction waves interact in a body and produce enough tension to fracture it. The principal content of investigations of spall phenomena that have been conducted are: (i) metallographic examination of the spall zone in recovered samples to obtain the correlation of the degree of damage with various features of the stress history [1-3] and (ii) instrumental measurement of resistance to dynamic fracture [4][5][6]. In the former case the result is information about the ability of the material to withstand shock loading, about the mechanism of nucleation and development of micro-cracks or pores, and statistical description of these processes. Dynamic measurements (free-surface velocity profiles or pressure on the interface with a soft material) during the shock-wave loading give the most correct data about stresses present during the spall process. The theoretical background of these measurements is discussed in Section 1.2 of this chapter.The damage rate, which is approximately equal to the product of concentration of damage nucleation sites and the average growth rate of damage at the sites, cannot be arbitrarily large. Under conditions of rapid dynamic loading, fracture is an essentially rate-dependent process. As a result, the spall strength value is not a material constant. It is more correct to speak about the resistance to fracture as a function of strain rate and other parameters of state. Since the fracture evolves over a period of time comparable with the duration of a shock wave experiment, we have to identify the stage of fracture which corresponds to the fracturing stress as this stress is determined by dynamic measurements. The acoustic analysis of spallation in relaxing media presented in Section 1.3 shows a correlation among the initial damage rate, the unloading rate in the incident shock pulse, and the freesurface velocity profile that is measured. Using this analysis, the initial damage rate can be estimated directly from the free-surface velocity profile.The typical behavior of materials of different classes-metals and alloys, brittle single crystals and glasses, and elastomers-is described in Section 1.4. A series of additional factors can influence the fracture process that

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Laser-Driven Flat Plate Impacts to 100 Gpa With Sub-Nanosecond Pulse Duration and Resolution for Material Property Studies

Cited by 35 publications

References 3 publications

Spall fracture: methodological aspects, mechanisms and governing factors

Spall fracture: methodological aspects, mechanisms and governing factors

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

Spallation in Solids Under Shock-Wave Loading: Analysis of Dynamic Flow, Methodology of Measurements, and Constitutive Factors

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