NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
High Fidelity Failure Analysis for a Composite Fuselage SectionA high fidelity delamination failure analysis was developed by combining a local failure analysis with a global full-scale finite element structural analysis to address strength and delamination failure in a single package. The methodology was demonstrated through a local three-dimensional pull-off failure analysis and a geometrically nonlinear structural analysis of a five-foot composite helicopter fuselage section. Pull-off specimens were used to identify potential debonding failure of co-cured skin-stringer/frame fuselage structures. An investigation of the failed pull-off specimens was performed to determine the location of the failure initiation. Three-dimensional strain energy release rate analysis indicates that the delamination initiation and growth is controlled by Mode 1 opening mode. The bending moment at the delamination tip was identified as the crucial factor controlling the failure. The geometrically nonlinear structural analysis of a five-foot composite fuselage section was performed using a detailed finite element model. Loads were applied along the periphery of the subcomponent using displacement fields generated from solutions of a full-vehicle model.
Document ID
20010058678
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Li, Jain
(Boeing Co. Mesa, AZ United States)
Davila, Carlos G.
(NASA Langley Research Center Hampton, VA United States)
Chen, Tzi-Kang
(Army Research Lab. Hampton, VA United States)
Date Acquired
August 20, 2013
Publication Date
January 1, 2001
Subject Category
Composite Materials
Meeting Information
Meeting: American Helicopter Society 57th Annual Forum
Location: Washington, DC
Country: United States
Start Date: May 9, 2001
End Date: May 11, 2001
Sponsors: American Helicopter Society, Inc.
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available