Nondestructive evaluation and characterization of damage and repair to continuous-fiber ceramic composite panels.

Conference · Wed Apr 01 04:00:00 EST 1998

OSTI ID:8115

Sun, J G; Petrak, D R; Pillai, T A. K.; Deemer, C; Ellingson, W A

Continuous fiber ceramic matrix composites are currently being developed for a variety of high-temperature applications. Because of the high costs of making these components, minor damage incurred during manufacturing or operation must be rewired in order to extend the life of the components. In this study, five ceramic-grade Nicalon{trademark} fiber/SiNC-matrix composite panels were intentionally damaged with a pendulum-type impactor during an impact test. The damaged panels were then repaired at Dow Corning Corporation. Three nondestructive evaluation (NDE) methods were used to study the characteristics of the panels after the damage and again after the panels were repaired. The NDE methods were X-ray radiography, infrared thermal imaging, and air-coupled ultrasound. The results showed that the impact test induced various types of damage in the panels. The NDE data that were obtained by the three NDE methods were correlated with each other.

• Research Organization: Argonne National Lab., IL (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 8115
• Report Number(s): ANL/ET/CP-94120
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
COMPOSITE MATERIALS
EVALUATION
FIBERS
IMPACT TESTS
MANUFACTURING
REPAIR
X-RAY RADIOGRAPHY