Accession Number : AD0741236

Title :   Investigation of electronic Ceramic Fibers for Non-Destructive Evaluation of Advanced Composites.

Descriptive Note : Final rept. 16 Feb 71-15 Feb 72,

Corporate Author : GENERAL ELECTRIC CO PHILADELPHIA PA SPACE DIV

Personal Author(s) : Henry,Edward C.

Report Date : 15 FEB 1972

Pagination or Media Count : 41

Abstract : The objective of this program is to investigate the feasibility of developing and using crystal-bearing filaments as sensors in the NDT of fiber-reinforced plastics and related composites. The fibers or filaments contain crystalline oxidic materials commonly referred to as electronic ceramics. These compositions include soft and hard magnetic ferrites, and ferroelectric potassium sodium niobate and lithium niobate. A study was made of the devitrification behavior of the key compositions, to show the effects of time, temperature, kind of glass and concentration of elctronic ceramic on the exsolution of the active phase. The devitrified filaments were incorporated into composite tile, with an epoxy-novolac matrix. Data are presented for the initial tests of these composites. (Author, modified-PL)

Descriptors :   (*CERAMIC FIBERS, PRODUCTION), (*FERRITES, CERAMIC FIBERS), (*NIOBATES, CERAMIC FIBERS), (*NONDESTRUCTIVE TESTING, COMPOSITE MATERIALS), DIELECTRIC PROPERTIES, CRYSTALLIZATION, SODIUM COMPOUNDS, LITHIUM COMPOUNDS, DETECTORS, FERROELECTRIC CRYSTALS, FILAMENTS, MAGNETOSTRICTION, HEAT TREATMENT, DRAWING(FORMING), TENSILE PROPERTIES

Subject Categories : Textiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE