Shock wave decay and spall strength in laser‐matter interaction

1990 ◽  
Vol 68 (1) ◽  
pp. 356-358 ◽  
Author(s):  
S. Eliezer ◽  
Y. Gazit ◽  
I. Gilath

1993 ◽  
Vol 11 (1) ◽  
pp. 221-225 ◽  
Author(s):  
Irith Gilath ◽  
Shalom Eliezer ◽  
Shalom Eliezer ◽  
Tuvia Bar

A high-irradiance short pulsed laser was used to generate hemispherical shock waves in planar targets. A linear relationship was obtained between the laser energy for threshold spall conditions (EL) and the cubic target thickness (d): EL = 45.3d3 + 4.9, where EL is in J and d is in mm. It is found that the laser-induced ablation pressure decays with the distance to a power slightly greater than 2.



Author(s):  
S. Eliezer ◽  
Y. Gazit ◽  
I. Gilath


1989 ◽  
Vol 40 (4) ◽  
pp. 501-509 ◽  
Author(s):  
Roy M. Gundersen




2013 ◽  
Vol 2013 (10) ◽  
pp. 772-778
Author(s):  
E. A. Kozlov ◽  
V. I. Tarzhanov ◽  
I. V. Telichko ◽  
D. G. Pankratov


2020 ◽  
Vol 62 (1) ◽  
pp. 59
Author(s):  
А.М. Молодец ◽  
А.А. Голышев ◽  
Д.В. Шахрай ◽  
Д.Ю. Ковалёв

Abstract Spall strength of zirconium heated by a strong shock wave to thousand-degree temperatures and that underwent transformations into denser polymorphic modifications was determined. Pressure profiles at the sample–soft barrier boundary were measured in spall experiments under flat one-dimensional loading. The equations of state of three polymorphic modifications of zirconium were constructed in the pressure range up to 50 GPa. Thermodynamic states of zirconium, which were calculated under conditions of experiments, in combination with results of measurements of pressure profiles, made it possible to determine the spall strength of zirconium heated in the shock compression–unloading cycle. The spall strength of zirconium was –2.8(7) GPa at 1027(70) K. Experimental pressure profiles were analyzed using the results of mathematical modeling of the performed experiments.



2019 ◽  
Vol 61 (8) ◽  
pp. 1492
Author(s):  
А.М. Молодец ◽  
А.А. Голышев

he spall strength of hafnium heated by a loading shock wave to thousandths of temperatures and subjected to transformation into denser polymorphic modifications has been determined. The following problems are solved. The pressure profiles at the sample-soft barrier interface in the spall experiments with flat one-dimensional loading are measured. The equations of state of three polymorphic modifications of hafnium are constructed in the pressure range up to 100 GPa. The thermodynamic states of hafnium under the conditions of the performed experiments were calculated. These calculations, together with the results of measurements of pressure profiles, made it possible to determine the spall strength of hafnium heated in a shock compression-unloading cycle. The spall strength of hafnium was -4 (1) GPa at a temperature of 1680 (380) K. Mathematical modeling of spall experiments in the framework of a one-dimensional hydrocode was performed.





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