Role of shock compression technique for scientific and engineering studies

Conference · Tue Dec 31 04:00:00 EST 1991

OSTI ID:10125011

Asay, J R; Chhabildas, L C

Shock compression techniques have been used for several decades to study the dynamic states of matter in temperature and pressure regimes inaccessible by other methods. Several experimental loading methods have been developed for these studies, including the use of high explosives, high-velocity launchers, and energy deposition. Most recently the development of laboratory techniques for launching flat-plate impactors to velocities of 12 km/s has greatly expanded our ability to study equation-of-state (EOS) and dynamic mechanical properties in regimes previously inaccessible. This paper presents a brief review of the status of high-velocity launchers developed for the purpose of studying dynamic material response. Also included in this paper, a discussion of the launcher capabilities for probing the high-pressure EOS and mechanical response of materials. The range of material property information available from these studies is briefly reviewed and several applications are illustrated. These include (1) measurements of the shock Hugoniot equation of state and unloading adiabats from the shocked state, (2) techniques for measuring mechanical strength to Mbar pressures under shock and isentropic loading, (3) measurement of tensile failure and the fragmentation of materials, (4) measurement of shock-induced vaporization, and (5) direct measurements of shear properties under shock loading. Shock compression techniques have been useful in a variety of current applications, such as debris shield design for spacecraft, analysis of ground shock propagation in geological materials, and shock synthesis of materials. 35 refs.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 10125011
• Report Number(s): SAND--91-2817C; CONF-920688--6; ON: DE92008324
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103
360104
42 ENGINEERING
420500
427000
ACCELERATION
DYNAMICS
EQUATIONS OF STATE
IMPACT SHOCK
LAUNCHING
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
NUCLEAR EXPLOSIONS
PHYSICAL PROPERTIES
PLATES
PRESSURE EFFECTS
PROJECTILES
RAILGUN ACCELERATORS
SHOCK WAVES
THERMODYNAMIC PROPERTIES
TUNGSTEN
VERY HIGH PRESSURE