Spallation and dynamic elongation of metals as an effect of laser induced shock waves

I. Gilath; S. Eliezer; M. P. Dariel; L. Kornblit; T. Bar Noy

Spallation and dynamic elongation of metals as an effect of laser induced shock waves

I. Gilath^*, S. Eliezer, M. P. Dariel, L. Kornblit, T. Bar Noy

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

Abstract

Spall and dynamic elongation at ultra high strain rate was investigated using short pulsed laser induced shock waves in metallic foils. The controlled stepwise increase in laser energies in a one-dimensional shock wave geometry was used to find the stages of damage evolution from incipient to complete perforation of the target. A phenomenological model was developed for laser produced spall in the 100 kilobars regime. By substituting experimental values in the model it was found for pure aluminum a spall pressure of 26±6 kbar and for pure copper 28±6 kbar at a strain rate of about 3×10⁷ sec^-1. The experimental results and results calculated with the model were compared to simulations and good agreement was found. A novel method was developed to measure the total elongation at fracture at ultra high strain rate.

Original language	English
Pages (from-to)	689-695
Number of pages	7
Journal	Isr J Technol
Volume	24
Issue number	3 -4,Pt B
State	Published - 1988
Externally published	Yes
Event	Fourth Israel Materials Engineering Conference IMEC IV - Beer Sheva, Isr Duration: 7 Dec 1988 → 8 Dec 1988

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title = "Spallation and dynamic elongation of metals as an effect of laser induced shock waves",

abstract = "Spall and dynamic elongation at ultra high strain rate was investigated using short pulsed laser induced shock waves in metallic foils. The controlled stepwise increase in laser energies in a one-dimensional shock wave geometry was used to find the stages of damage evolution from incipient to complete perforation of the target. A phenomenological model was developed for laser produced spall in the 100 kilobars regime. By substituting experimental values in the model it was found for pure aluminum a spall pressure of 26±6 kbar and for pure copper 28±6 kbar at a strain rate of about 3×107 sec-1. The experimental results and results calculated with the model were compared to simulations and good agreement was found. A novel method was developed to measure the total elongation at fracture at ultra high strain rate.",

author = "I. Gilath and S. Eliezer and Dariel, {M. P.} and L. Kornblit and {Bar Noy}, T.",

year = "1988",

language = "אנגלית",

volume = "24",

pages = "689--695",

journal = "Isr J Technol",

issn = "0021-2202",

number = "3 -4,Pt B",

note = "Fourth Israel Materials Engineering Conference IMEC IV ; Conference date: 07-12-1988 Through 08-12-1988",

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TY - JOUR

T1 - Spallation and dynamic elongation of metals as an effect of laser induced shock waves

AU - Gilath, I.

AU - Eliezer, S.

AU - Dariel, M. P.

AU - Kornblit, L.

AU - Bar Noy, T.

PY - 1988

Y1 - 1988

N2 - Spall and dynamic elongation at ultra high strain rate was investigated using short pulsed laser induced shock waves in metallic foils. The controlled stepwise increase in laser energies in a one-dimensional shock wave geometry was used to find the stages of damage evolution from incipient to complete perforation of the target. A phenomenological model was developed for laser produced spall in the 100 kilobars regime. By substituting experimental values in the model it was found for pure aluminum a spall pressure of 26±6 kbar and for pure copper 28±6 kbar at a strain rate of about 3×107 sec-1. The experimental results and results calculated with the model were compared to simulations and good agreement was found. A novel method was developed to measure the total elongation at fracture at ultra high strain rate.

AB - Spall and dynamic elongation at ultra high strain rate was investigated using short pulsed laser induced shock waves in metallic foils. The controlled stepwise increase in laser energies in a one-dimensional shock wave geometry was used to find the stages of damage evolution from incipient to complete perforation of the target. A phenomenological model was developed for laser produced spall in the 100 kilobars regime. By substituting experimental values in the model it was found for pure aluminum a spall pressure of 26±6 kbar and for pure copper 28±6 kbar at a strain rate of about 3×107 sec-1. The experimental results and results calculated with the model were compared to simulations and good agreement was found. A novel method was developed to measure the total elongation at fracture at ultra high strain rate.

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AN - SCOPUS:0024171292

SN - 0021-2202

VL - 24

SP - 689

EP - 695

JO - Isr J Technol

JF - Isr J Technol

IS - 3 -4,Pt B

T2 - Fourth Israel Materials Engineering Conference IMEC IV

Y2 - 7 December 1988 through 8 December 1988

ER -

Spallation and dynamic elongation of metals as an effect of laser induced shock waves

Abstract

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