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Impact behavior of graphite-epoxy simulated fan bladesThe response of a graphite-epoxy material, Modmor II/PR-286, to foreign object impact was investigated by impacting spherical projectiles of three different materials - gelatin, ice, and steel - on simulated blade specimens. Visual and metallographic inspection revealed three damage mechanisms: penetration, leading edge bending failure, and stress wave delamination and cracking. The steel projectiles caused penetration damage regardless of the impact location and angle. For the ice and gelatin particles impacting the leading edge, failure was due to large local bending strains, resulting in significant material removal and delamination damage.
Document ID
19770042881
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Cook, T. S.
(Southwest Research Institute San Antonio, Tex., United States)
Preston, J. L., Jr.
(United Technologies Corp. Power Systems Div., South Windsor, Conn., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1977
Subject Category
Composite Materials
Report/Patent Number
AIAA PAPER 77-365
Meeting Information
Meeting: Conference on Structures, Structural Dynamics and Materials
Location: San Diego, CA
Country: US
Start Date: March 21, 1977
End Date: March 23, 1977
Accession Number
77A25733
Funding Number(s)
CONTRACT_GRANT: NAS3-15568
Distribution Limits
Public
Copyright
Other

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