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Fracture modes in notched angleplied composite laminatesThe Composite Durability Structural Analysis (CODSTRAN) computer code is used to determine composite fracture. Fracture modes in solid and notched, unidirectional and angleplied graphite/epoxy composites were determined by using CODSTRAN. Experimental verification included both nondestructive (ultrasonic C-Scanning) and destructive (scanning electron microscopy) techniques. The fracture modes were found to be a function of ply orientations and whether the composite is notched or unnotched. Delaminations caused by stress concentrations around notch tips were also determined. Results indicate that the composite mechanics, structural analysis, laminate analysis, and fracture criteria modules embedded in CODSTRAN are valid for determining composite fracture modes.
Document ID
19840026505
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Irvine, T. B. (NASA Lewis Research Center Cleveland, OH, United States)
Ginty, C. A. (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 1.15:83802
NASA-TM-83802
E-2307
Report Number: NAS 1.15:83802
Report Number: NASA-TM-83802
Report Number: E-2307
Meeting Information
Meeting: Symp. on Composite Fatigue and Fracture
Location: Dallas, TX
Country: United States
Start Date: October 24, 1984
End Date: October 25, 1984
Sponsors: American Society for Testing and Materials
Accession Number
84N34576
Funding Number(s)
PROJECT: RTOP 505-33-5B
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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