Static, Ballistic, and Impact Behavior of Glass/Graphite Drive Shafting
ARMY AIR MOBILITY RESEARCH AND DEVELOPMENT LAB FORT EUSTIS VA EUSTIS DIRECTORATE
Pagination or Media Count:
Limited static tests on damaged scale-model Heavy Lift Helicopter HLH plus or minus 45 degree glassplus or minus 5 degree graphite drive shaft sections at 150 deg F indicated that the shafts are not capable of meeting the design requirement of the HLH. Low-energy impacts ball drops produced catastrophic brittle failure of the graphite material. Ballistic damage was localized to the impact area but resulted in a strength reduction factor of approximately 1.75.
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