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Experimental Study of the Compression Response of Fluted-Core Composite Panels with JointsFluted-core sandwich composites consist of integral angled web members spaced between laminate face sheets, and may have the potential to provide benefits over traditional sandwich composites for certain aerospace applications. However, fabrication of large autoclave-cured fluted-core cylindrical shells with existing autoclaves will require that the shells be fabricated in segments, and joined longitudinally to form a complete barrel. Two different longitudinal fluted-core joint designs were considered experimentally in this study. In particular, jointed fluted-core-composite panels were tested in longitudinal compression because longitudinal compression is the primary loading condition in dry launch-vehicle barrel sections. One of the joint designs performed well in comparison with unjointed test articles, and the other joint design failed at loads approximately 14% lower than unjointed test articles. The compression-after-impact (CAI) performance of jointed fluted-core composites was also investigated by testing test articles that had been subjected to 6 ft-lb impacts. It was found that such impacts reduced the load-carrying capability by 9% to 40%. This reduction is dependent on the joint concept, component flute size, and facesheet thickness.
Document ID
20120008164
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Schultz, Marc R. (NASA Langley Research Center Hampton, VA, United States)
Rose, Cheryl A. (NASA Langley Research Center Hampton, VA, United States)
Guzman, J. Carlos (Boeing Co. Seattle, WA, United States)
McCarville, Douglas (Boeing Co. Seattle, WA, United States)
Hilburger, Mark W. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 25, 2013
Publication Date
April 23, 2012
Subject Category
Structural Mechanics
Report/Patent Number
AIAA Paper-2012-1690
NF1676L-13195
Meeting Information
Meeting: 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Location: Honolulu, HI
Country: United States
Start Date: April 23, 2012
End Date: April 26, 2012
Sponsors: American Society of Civil Engineers, American Society for Composites, American Inst. of Aeronautics and Astronautics, American Society of Mechanical Engineers, American Helicopter Society, Inc.
Funding Number(s)
WBS: WBS 869021.04.07.01.13
Distribution Limits
Public
Copyright
Public Use Permitted.

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