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FaceSheet Push-off Tests to Determine Composite Sandwich Toughness at Cryogenic TemperaturesA new novel test method, associated analysis, and experimental procedures are developed to investigate the toughness of the facesheet-to-core interface of a sandwich material at cryogenic temperatures. The test method is designed to simulate the failure mode associated with facesheet debonding from high levels of gas pressure in the sandwich core. The effects of specimen orientation are considered, and the results of toughness measurements are presented. Comparisons are made between room and liquid nitrogen (-196 C) test temperatures. It was determined that the test method is insensitive to specimen facesheet orientation and strain energy release rate increases with a decrease in the test temperature.
Document ID
20040085968
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Gates, Thomas S. (NASA Langley Research Center Hampton, VA, United States)
Herring, Helen M. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2001
Subject Category
Composite Materials
Report/Patent Number
AIAA Paper 2001-1219
Meeting Information
Meeting: 42nd AIAA/ASME/AHS/ASC Structures, Structural Dynamics and Materials Conference and Exhibit
Location: Seattle, WA
Country: United States
Start Date: April 16, 2001
End Date: April 19, 2001
Sponsors: American Society for Composites, American Society of Mechanical Engineers, American Helicopter Society, Inc., American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Public Use Permitted.

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