Laboratory technique for simulation of projectile penetration into geological targets

Technical Report · Sat Jan 01 00:00:00 EST 1983

OSTI ID:6383316

Setchell, R E; Guzman, J A

A new approach to laboratory-scale experiments on high-velocity penetration of projectiles into geological materials is demonstrated. This method utilizes a commercial accelerometer mounted within a small penetrator model that impacts a sample of target material. As in previous laboratory-scale experiments at high velocities, a compressed-gas gun is used in a reverse-ballistics configuration to accelerate a geological sample into an initially stationary penetrator. The present approach provides an acceleration history during the penetration, rather than displacement or velocity data as in these previous studies. Two experiments were conducted at each of two impact velocities using a conical-nosed penetrator and a simulated soft-sandstone target. The recorded accelerometer signals show high-frequency transducer resonances superimposed on the response expected for rigid-body acceleration. Direct numerical techniques are used to extract the rigid-body acceleration history. In addition to demonstrating the effectiveness of this approach, the present results provide useful information on how peak penetrator forces vary with impact velocity during conical-nosed penetration into the simulated sandstone.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6383316
• Report Number(s): SAND-81-2029; ON: DE83006390
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
PROJECTILES
IMPACT TESTS
PENETRATION DEPTH
SANDSTONES
ACCELERATION
ACCELEROMETERS
DEFORMATION
EXPERIMENTAL DATA
MEASURING METHODS
MOTION
SIMULATION
DATA
INFORMATION
MATERIALS TESTING
MEASURING INSTRUMENTS
MECHANICAL TESTS
NUMERICAL DATA
ROCKS
SEDIMENTARY ROCKS
TESTING
420200* - Engineering- Facilities
Equipment
& Techniques