Journal ArticleDOI
Interferometer Technique for Measuring the Dynamic Mechanical Properties of Materials
L. M. Barker,R. E. Hollenbach +1 more
Reads0
Chats0
TLDR
In this paper, a new technique is described for measuring the position history of the free surface of an impacted specimen, and measurements can be made to 0.025 μ accuracy at free surface velocities up to 1 mm/μsec.Abstract:
A new technique is described for measuring the position history of the free surface of an impacted specimen. Measurements can be made to 0.025 μ accuracy at free surface velocities up to 0.1 mm/μsec. Problems and possible solutions for monitoring higher velocities are indicated.read more
Citations
More filters
Journal ArticleDOI
Laser interferometer for measuring high velocities of any reflecting surface
Lynn M. Barker,R. E. Hollenbach +1 more
TL;DR: In this article, a laser velocity interferometer instrumentation system was developed which can measure the velocity history of either spectrally or diffusely reflecting surfaces, and achieved accuracies of 2% or better for peak surface velocities of 0.2 mm/μsec.
Journal ArticleDOI
Shock‐Wave Studies of PMMA, Fused Silica, and Sapphire
Lynn M. Barker,R. E. Hollenbach +1 more
TL;DR: In this paper, the authors measured the shock wave propagation characteristics of polymethyl methacrylate (PMMA), fused silica, and sapphire for both compressive and rarefaction waves using plate-impact experiments and interferometer instrumentation techniques.
Journal ArticleDOI
Shock wave study of the α ⇄ ε phase transition in iron
L. M. Barker,R. E. Hollenbach +1 more
TL;DR: In this article, the free surface velocities of Armco iron specimens and impactors were obtained with the VISAR laser interferometer instrumentation system, which provided new information concerning the rate effects associated with the α → e polymorphic phase transition at 13 GPa, material strength and release wave speeds at 10 and 40 GPa.
Journal ArticleDOI
Line-imaging velocimeter for shock diagnostics at the OMEGA laser facility
TL;DR: A line-imaging velocity interferometer has been implemented at the OMEGA laser facility of the University of Rochester as mentioned in this paper, which is the primary diagnostic for a variety of experiments involving laser-driven shockwave propagation, including high pressure equation of state experiments, materials characterization experiments, shock characterization for Rayleigh-Taylor experiments, and shock timing experiments for inertial confinement fusion research.
References
More filters
Journal ArticleDOI
Shock-Wave Compression of Quartz
TL;DR: In this article, high explosive driving systems and high speed optical techniques have been used to investigate the compressional behavior of xcut, ycut, and zcut quartz crystals and fused quartz up to about 750 kbar pressure.
Journal ArticleDOI
Equation of State for Nineteen Metallic Elements from Shock‐Wave Measurements to Two Megabars
R. G. McQueen,S. P. Marsh +1 more
TL;DR: In this paper, the authors extended the Hugoniot loci into the one-to-two-megabar region for 19 metallic elements: Ag, Au, Cd, Co, Cr, Cu, Mo, Ni, Pb, Sn, Th, Ti, Tl, V, W, Zn, Bi, Fe, Sb.
Journal ArticleDOI
Shock Wave Compression of Hardened and Annealed 2024 Aluminum
TL;DR: In this paper, the elastic-plastic theory is used for the description of plane shock waves in hardened and annealed aluminum at pressures below 50 kbar, and the results show that the elastic wave amplitudes (5.4±0.2 kbar and 0.9± 0.2kbar, respectively) agree within experimental precision with values predicted from static tensile specimen data.
Journal ArticleDOI
Piezoelectric Current from Shock‐Loaded Quartz—A Submicrosecond Stress Gauge
TL;DR: The results of an extensive experimental study of the current from shockloaded X-cut quartz disks are reported for shock stress up to 50 kbar as mentioned in this paper, where the current amplitude and its time dependence are functions of the dielectric, piezoelectric and mechanical properties of quartz under shockloading conditions.
Related Papers (5)
Laser interferometer for measuring high velocities of any reflecting surface
Lynn M. Barker,R. E. Hollenbach +1 more