Shock pressure determination in detonator wires

Conference · Fri Jul 21 04:00:00 EDT 1989

OSTI ID:5836366

Frank, A M; Gathers, G R

High-resolution microstreak photographs were used to record shock waves from water-immersed, exploding detonator wires. Shock velocities were read directly from the photographs, and pressures were computer from known Hugoniot data. Wires were gold or aluminium, 35 /mu/m in diameter by 1 mm long. The field of the streak camera covered a spatial width of about 1 mm and a time interval of 200 to 500 ns with resolutions of about 5 /mu/m and 1 ns, respectively. Initial hand reduction of data, and the quadratic form of the Hugoniot, resulted in substantial data spread. Computer image analysis has reduced the spread, although questions of interpretation and accuracy remain. Observation included waves generated by melting of the wire and by rebound of the melt wave. Shockwave pressures of over 15 kbar were generated, predominantly by the rebound wave from the burst, which overtakes the initial burst wave. 4 refs., 3 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5836366
• Report Number(s): UCRL-100687; CONF-890812-46; ON: DE89017756
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALUMINIUM
ELEMENTS
EQUATIONS
EXPLODING WIRES
GOLD
HYDROGEN COMPOUNDS
METALS
OXYGEN COMPOUNDS
PHOTOGRAPHY
RANKINE-HUGONIOT EQUATIONS
SHOCK WAVES
STREAK PHOTOGRAPHY
TRANSITION ELEMENTS
VELOCITY
WATER
WIRES