The Dynamic Response of Graphitic Materials
Rept. for Oct 1967-Mar 1968
AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS
Pagination or Media Count:
Graphitic materials are receiving consideration for nose tip and heat shield application on advanced reentry vehicles because of their low ablation rate and high strength at elevated temperatures. In selecting materials for design application where impulsive loading is encountered, the dynamic response characteristics of the candidate materials must be known. The present investigation studies the response characteristics of pyrolytic and monolithic graphite material failure modes, dynamic strength, and relative performance are included. The materials under investigation are monolithic graphites ATJ, POCO AXF, and Graphitite G and pyrolytic graphites conventional PG, boron-doped PG, and Hafnium-doped PG. Samples are subjected to strain rates of 200 to 2000 ininsec and peak stress wave amplitudes between 2000 and 30,000 psi. The results of this investigation have found immediate application in the evaluation of these materials in studies concerned with the simulation of certain weapon effects.
- Ceramics, Refractories and Glass
- Laminates and Composite Materials
- Guided Missiles