DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD0753392
Title:
A Laboratory Method for Thermal Fracture of Graphite
Corporate Author:
AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS
Report Date:
1972-10-31
Abstract:
A method was developed for producing thermal stress failure in ATJ-S graphite and the initial results are described. Test specimens are 10-cm-long hollow cylinders with outer and inner radii of 1.9 and 0.4 cm, respectively. The outside is heated by induction at a frequency of 1.4 MHz by a 100-kW power oscillator the inside is kept below 100C by forcing water at a rate of 5 gpm through the copper-coated bore. A special lead soldering technique has been developed to fasten the coolant ducts to the specimen. The inductor coil is protected by an oil bath against heat and electric breakdown.
Descriptive Note:
Rept. for Dec 1970-May 1972
Supplementary Note:
DOI: 10.21236/AD0753392
Pages:
0042
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
F04701-72-C-0073
File Size:
1.73MB
