Accession Number:

AD0687286

Title:

DYNAMIC FRACTURE PRESSURE OF QUARTZ

Descriptive Note:

Technical note

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

• Knapton, J. D.
• Stobie, I. C.

Report Date:

1969-01-01

Pagination or Media Count:

21.0

Abstract:

The dynamic fracture pressure of quartz when mounted in a simple pressure transducer was measured based on pressure steps with rise times of 0.5 to 1 msec. Maximum measured dynamic fracture pressures were about 4 kbar 52 to 62 kpsi. Both natural and synthetic quartz samples were studied. The apparatus consists of a gas operated pressure vessel which utilizes the stretched stem principle for achieving fast valve opening times.

Descriptors:

• *QUARTZ
• YIELD POINT
• SURFACE ROUGHNESS
• SHOCK(MECHANICS)
• SINGLE CRYSTALS
• THERMAL STABILITY
• FRACTURE(MECHANICS)
• DEFECTS(MATERIALS)
• BRITTLENESS
• ELECTRODES
• PRESSURE
• PIEZOELECTRIC TRANSDUCERS
• CRYSTAL HOLDERS
• REAL TIME
• ELASTIC PROPERTIES

Subject Categories:

• Electrical and Electronic Equipment
• Test Facilities, Equipment and Methods
• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE