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Impact Behavior of Composite Fan Blade Leading Edge Subcomponent with Thermoplastic Polyurethane InterleaveImpact damage tolerance and damage resistance is a critical metric for application of polymer matrix composites where failure caused by impact damage could compromise structural performance and safety. As a result, several materials and/or design approaches to improve impact damage tolerance have been investigated over the past several decades. Many composite toughening methodologies impart a trade-off between increased fracture toughness and compromised in-plane strength and modulus. In large part, mechanical tests to evaluate composite damage tolerance include static methods such as Mode I, Mode II, and mixed mode failures. However, ballistic impact damage resistance does not always correlate with static properties. The intent of this paper is to evaluate the influence of a thermoplastic polyurethane veil interleave on the static and dynamic performance of composite test articles. Static coupon tests included tension, compression, double cantilever beam, and end notch flexure. Measurement of the resistance to ballistic impact damage were made to evaluate the composites response to high speed impact. The interlayer material showed a decrease of in-plane performance with only a moderate improvement to Mode I and Mode II fracture toughness. However, significant benefit to impact damage tolerance was observed through ballistic tests.
Document ID
20150022907
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Miller, Sandi G.
(NASA Glenn Research Center Cleveland, OH United States)
Roberts, Gary D.
(NASA Glenn Research Center Cleveland, OH United States)
Kohlman, Lee W.
(NASA Glenn Research Center Cleveland, OH United States)
Heimann, Paula J.
(Ohio Aerospace Inst. Cleveland, OH, United States)
Pereira, J. Michael
(NASA Glenn Research Center Cleveland, OH United States)
Ruggeri, Charles R.
(NASA Glenn Research Center Cleveland, OH United States)
Martin, Richard E.
(Cleveland State Univ. Cleveland, OH, United States)
McCorkle, Linda S.
(Ohio Aerospace Inst. Cleveland, OH, United States)
Date Acquired
December 11, 2015
Publication Date
July 19, 2015
Subject Category
Engineering (General)
Chemistry And Materials (General)
Report/Patent Number
GRC-E-DAA-TN22397
Meeting Information
Meeting: International Conference on Composite Materials
Location: Copenhagen
Country: Denmark
Start Date: July 19, 2015
End Date: July 24, 2015
Sponsors: International Committee on Composite Materials
Funding Number(s)
WBS: WBS 081876.02.03.50.04.01
CONTRACT_GRANT: NNC13BA10B
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Damage Tolerance
Interleave
Polymer matrix composite
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