Accession Number:

ADA183910

Title:

The Dynamic Response of Oxynitride Glass.

Descriptive Note:

Final rept. Jun 86-Jun 87,

Corporate Author:

ISRAEL INST OF METALS HAIFA

Personal Author(s):

• Yeshurun,Y.
• Brandon,David G.

Report Date:

1987-06-01

Pagination or Media Count:

14.0

Abstract:

Plate impact experiments were performed on two grades of oxynitride glass. Material manganin guages were used to determine the dynamic response of this material in the range of 0 to 12 GPa. In the high stress range the measured stress signals showed that the transmitted waves are composed of an initial elastic jump followed by stress relaxation and a subsequent plastic wave. The plastic transition occured at 9.0 or - 0.2 GPa for a 6.0 at nitrogen glass and at 10.4 or - 0.3 GPa for a 3.3 at nitrogen glass. This behaviour is characteristic of ductile metals, but is seldom observed in glasses. The Hugoniot curves for both the above nitrogen compositions were determined in the range of 0 to 1 GPa and their spall strength in this pressure regime was estimated from the manganin guage record.

Descriptors:

• *GLASS
• *DYNAMIC RESPONSE
• DUCTILITY
• ELASTIC PROPERTIES
• MANGANIN
• PLASTIC PROPERTIES
• STRESS RELAXATION
• STRESSES
• PLASTICS
• TRANSITIONS
• PRESSURE
• SIGNALS

Subject Categories:

• Ceramics, Refractories and Glass
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE