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The fracture behavior of filament wound cylinders with surface flawsThe behavior of tensile coupons with surface notches of various semielliptical shapes has been evaluated for specimens obtained from a thick filament wound graphite/epoxy cylinder. Specimens with very shallow notches were observed to be notch insensitive and the unnotched strength from these specimens was determined to be 54.97 Ksi with an associated failure strain of 1.328 percent. Specimens with deeper notches were sensitive to notch depth and notch aspect ratio. Isotropic linear elastic fracture mechanics with an estimated fracture toughness of 27.2 Ksi-in.-to the 1/2 correctly predicted the influence of notch depth, aspect ratio and specimen finite width.
Document ID
19850048099
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Harris, C. E. (Texas A&M University College Station, TX, United States)
Morris, D. H. (Virginia Polytechnic Institute and State University Blacksburg, VA, United States)
Poe, C. C., Jr. (NASA Langley Research Center Fatigue and Fracture Branch, Hampton, VA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Subject Category
Composite Materials
Report/Patent Number
AIAA PAPER 85-0650
Meeting Information
Meeting: Structures, Structural Dynamics, and Materials Conference
Location: Orlando, FL
Start Date: April 15, 1985
End Date: April 17, 1985
Accession Number
85A30250
Distribution Limits
Public
Copyright
Other

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