Deformation of a Low-Cost Ti-6A1-4V Armor Alloy Under Shock Loading

Spletzer, Stephen V.; Dandekar, Dattatraya P.

doi:10.21236/ada391460

Cited by 2 publications

(3 citation statements)

References 12 publications

(14 reference statements)

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“…The plates were either Ti-6Al-4V or partially stabilized ZrO 2 . The yield strength of the Ti-6Al-4V has not been characterized but is assumed to be 1.28 GPa [Spletzer and Dandekar, 2001]. The yttria stabilized tetragonal ZrO 2 was made by Refractron Technologies and was found to have an Hugoniot elastic limit (HEL) of 17.6 GPa, which is close to the value measured previously for a similar material by Grady and Mashimo [1992].…”

Section: Experimental Configurationsupporting

confidence: 55%

“…Values shown for ZrO 2 were measured using ultrasonic techniques at Sandia, except for Y which was determined from the HEL from a plate impact experiment. Values for Ti-6Al-4V are taken from Spletzer and Dandekar [2001]. The ultrasonic velocities are believed to be representative of all Ti-6Al-4V, though the value of Y can depend upon heat treatment and impurity levels, among other things.…”

Section: Experimental Configurationmentioning

confidence: 99%

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Pressure-shear experiments on granular materials.

Reinhart

Thornhill²,

Vogler³

et al. 2011

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Pressure-shear experiments were performed on granular tungsten carbide and sand using a newlyrefurbished slotted barrel gun. The sample is a thin layer of the granular material sandwiched between driver and anvil plates that remain elastic. Because of the obliquity, impact generates both a longitudinal wave, which compresses the sample, and a shear wave that probes the strength of the sample. Laser velocity interferometry is employed to measure the velocity history of the free surface of the anvil. Since the driver and anvil remain elastic, analysis of the results is, in principal, straightforward.Experiments were performed at pressures up to nearly 2 GPa using titanium plates and at higher pressure using zirconium plates. Those done with the titanium plates produced values of shear stress of 0.1-0.2 GPa, with the value increasing with pressure. On the other hand, those experiments conducted with zirconia anvils display results that may be related to slipping at an interface and shear stresses mostly at 0.1 GPa or less. Recovered samples display much greater particle fracture than is observed in planar loading, suggesting that shearing is a very effective mechanism for comminution of the grains.3

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Section: Experimental Configurationsupporting

confidence: 55%

Section: Experimental Configurationmentioning

confidence: 99%

Pressure-shear experiments on granular materials.

Reinhart

Thornhill²,

Vogler³

et al. 2011

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show abstract

“…Measurements show a precipitous decline in free-surface velocity, indicative of spall, and a recompression wave following the generation of spall in the material. These freesurface velocities are identified as peak, spall, and reshock in table 3. The values of half pullback velocity given by one-half the product of difference between the peak and spall free-surface is a measure of the spall strength of a material.…”

Section: Compression and Release Responsementioning

confidence: 99%

Spall Strength of Tungsten Carbide

Dandekar¹

2004

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Deformation of a Low-Cost Ti-6A1-4V Armor Alloy Under Shock Loading

Cited by 2 publications

References 12 publications

Pressure-shear experiments on granular materials.

Pressure-shear experiments on granular materials.

Spall Strength of Tungsten Carbide

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