FRACTURE MODES IN NOTCHED ANGLEPLIED COMPOSITE LAMINATES.

被引：0
|
作者：
Irvine, Thomas B. [1 ]
Ginty, Carol A. [1 ]
机构：
[1] NASA, Lewis Research Cent,, Cleveland, OH, USA, NASA, Lewis Research Cent, Cleveland, OH, USA
来源：
NASA Technical Memorandum | 1984年
关键词：
EPOXY RESINS - Reinforcing - FRACTURE MECHANICS;
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摘要：
A unique NASA Lewis Research Center analytical capability, the 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.
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