Journal ArticleDOI
Detonation of Insensitive High Explosives by a Q‐Switched Ruby Laser
L. C. Yang,Vincent J. Menichelli +1 more
Reads0
Chats0
TLDR
In this paper, a focused Q-switched ruby laser was used to generate a shock wave at the window-explosive interface when irradiated by a 1000-A-thick aluminum film.Abstract:
Immediate longitudinal detonations have been observed in confined small-diameter columns of PETN, RDX, and tetryl by using a focused Q-switched ruby laser. The energy ranged from 0.8 to 4.0 J in a pulse width of 25 nsec. A 1000-A-thick aluminum film deposited on a glass window was used to generate a shock wave at the window-explosive interface when irradiated by the laser. In some cases, steady-state detonations were reached in less than .5 microsec with less than 10% variation in the detonation velocity.read more
Citations
More filters
Journal ArticleDOI
Laser shock‐induced microstructural and mechanical property changes in 7075 aluminum
TL;DR: In this paper, stress waves generated by a giant pulsed laser were used to change the in-depth microstructural and mechanical properties of 7075 aluminum, resulting in an increase in yield strength of 30% over unshocked values.
Journal ArticleDOI
Review and recent developments of laser ignition for internal combustion engines applications
TL;DR: In this article, the authors review progress on the use of laser-induced ignition for internal combustion engines and explore the feasibility of this interesting technology for practical applications concerning internal combustion engine.
Journal ArticleDOI
Stress waves generated in thin metallic films by a Q-switched ruby laser
TL;DR: In this article, the authors investigated the dependence of heat transfer on a wide range of film materials and film thicknesses and found that the dependence on these parameters is much weaker than is predicted by heat transfer estimations commonly used to describe the interaction of laser irradiation with unconfined bulk-solid surfaces.
Journal ArticleDOI
Quantitative assessment of laser‐induced stress waves generated at confined surfaces
TL;DR: In this paper, the authors measured the pressure environment at the back surface of various sample thicknesses and compared the results with numerical calculations obtained from a one-dimensional radiation hydrodynamics computer code.
Journal ArticleDOI
Laser ignitibility of insensitive secondary explosive 1,1-diamino-2,2-dinitroethene (FOX-7).
Xiao Fang,Warren G McLuckie +1 more
TL;DR: The results have shown that carbon black (CB) as an optical sensitizer is compatible with Fox-7, and significantly enhances laser ignitibility of the explosive when a small amount of CB is uniformly doped in FOX-7.
References
More filters
Journal ArticleDOI
Laser‐generated stress waves
TL;DR: In this paper, a method of generating stress waves with a laser was demonstrated using a transparent material to impede the expansion of the vaporized absorber, whose magnitude was 34 kbar and whose width at half-maximum was equal to the width of the laser pulse.