Buckling and postbuckling of a delaminated composite beam in bending

M. Kinawy, R. Butler, G. W. Hunt

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A study was conducted to model the thin delaminated layer using the Elastica theory and investigate the postbuckling behavior for a delaminated beam under compression. Static tests were performed to understand the buckling and propagation behavior of 16-ply, laminated beams with a through-width delamination created by a polytetrafluoroethylene (PTFE) layer of 0.02 mm thickness and 40 mm length placed at the mid length of the beam between the second and third ply. A unidirectional plate made of M21-T800 carbon material was laid up and cured using an autoclave. An INSTRON-1332 servo-hydraulic machine with 10 kN load cell was used for loading application. The strain gauges and loading channel from the servo-hydraulic machine were connected to a SPIDER-8 data acquisition system which was attached to a PC. The specimens were also loaded through a four point bending fixture under displacement control.
Original languageEnglish
Pages (from-to)670-672
Number of pages3
JournalAIAA Journal
Volume49
Issue number3
DOIs
Publication statusPublished - Mar 2011

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Buckling
Hydraulics
Displacement control
Autoclaves
Composite materials
Strain gages
Polytetrafluoroethylenes
Delamination
Data acquisition
Carbon

Cite this

Buckling and postbuckling of a delaminated composite beam in bending. / Kinawy, M.; Butler, R.; Hunt, G. W.

In: AIAA Journal, Vol. 49, No. 3, 03.2011, p. 670-672.

Research output: Contribution to journalArticle

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