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Fracture surface characteristics of notched angleplied graphite/epoxy compositesComposite fracture surface characteristics and related fracture modes have been investigated through extensive microscopic inspections of the fracture surfaces of notched angleplied graphite/epoxy laminates. The investigation involved 4 ply laminates of the configuration + or - theta (s) where theta = 0 deg, 3 deg, 5 deg, 10 deg, 15 deg, 30 deg, 45 deg, 60 deg, 75 deg, and 90 deg. Two-inch wide tensile specimens with 0.25 in. by 0.05 in. through-slits centered across the width were tested to fracture. The fractured surfaces were then removed and examined using a scanning electron microscope. Evaluation of the photomicrographs combined with analytical results obtained using the CODSTRAN computer code culminated in a unified set of fracture criteria for determining the mode of fracture in notched angleplied graphite/epoxy laminates.
Document ID
19840025451
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ginty, C. A. (NASA Lewis Research Center Cleveland, OH, United States)
Irvine, T. B. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1984
Subject Category
Composite Materials
Report/Patent Number
NAS 1.15:83786
E-2284
NASA-TM-83786
Report Number: NAS 1.15:83786
Report Number: E-2284
Report Number: NASA-TM-83786
Meeting Information
Meeting: Intern. Symp. on Composites: Mater. and Eng.
Location: Newark, DE
Country: United States
Start Date: September 24, 1984
End Date: September 28, 1984
Sponsors: Center for Composite Materials
Accession Number
84N33522
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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