Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Failure prediction of hot-pressed Si/sub 3/N/sub 4/ ceramics by NDE

Conference ·
OSTI ID:6255157
; ; ;

Results are presented on the detection of critical flaws in hot-pressed Si/sub 3/N/sub 4/ with Fe inclusions by nondestructive evaluation (NDE) and fractographic observation. The NDE methods employed included, low-energy contact radiography with digital image enhancement, and through-transmission and back-scatter ultrasonic imaging. A comparison of NDE and fractography results indicates that the backscatter ultrasonic method may be more suitable than low-kV contact radiography for the detection of near-surface flaws.

OSTI ID:
6255157
Report Number(s):
CONF-870505-
Country of Publication:
United States
Language:
English

Similar Records

Failure prediction of Si/sub 3/N/sub 4/ ceramics by NDE (nondestructive evaluation)
Conference · Wed Oct 01 00:00:00 EDT 1986 · OSTI ID:7077982
NDE (nondestructive evaluation) and fracture studies of hot-pressed Si/sub 3/N/sub 4/
Conference · Sat Jan 31 23:00:00 EST 1987 · OSTI ID:6419975
Effect of flaws on the fracture behavior of structural ceramics
Conference · Fri May 01 00:00:00 EDT 1987 · OSTI ID:6480603

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ACOUSTIC TESTING
BACKSCATTERING
CERAMICS
COMPARATIVE EVALUATIONS
DEFECTS
DIGITAL SYSTEMS
ELEMENTS
FABRICATION
FAILURE MODE ANALYSIS
FAILURES
FRACTOGRAPHY
FRACTURE MECHANICS
FRACTURES
HOT PRESSING
IMAGE PROCESSING
INCLUSIONS
INDUSTRIAL RADIOGRAPHY
IRON
MATERIALS TESTING
MATERIALS WORKING
MECHANICS
METALS
NITRIDES
NITROGEN COMPOUNDS
NONDESTRUCTIVE TESTING
PNICTIDES
PRESSING
PROCESSING
SCATTERING
SILICON COMPOUNDS
SILICON NITRIDES
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TESTING
TRANSITION ELEMENTS
ULTRASONIC TESTING