Manufacturing influence on the delamination fracture behavior of the T800H/3900-2 carbon fiber reinforced polymer composites

Zhang, Jin and Fox, Bronwyn 2007, Manufacturing influence on the delamination fracture behavior of the T800H/3900-2 carbon fiber reinforced polymer composites, Materials & manufacturing processes, vol. 22, no. 6, pp. 768-772.


Title Manufacturing influence on the delamination fracture behavior of the T800H/3900-2 carbon fiber reinforced polymer composites
Author(s) Zhang, Jin
Fox, Bronwyn
Journal name Materials & manufacturing processes
Volume number 22
Issue number 6
Start page 768
End page 772
Publisher Taylor & Francis Inc
Place of publication United States
Publication date 2007-08
ISSN 1042-6914
1532-2475
Keyword(s) Aerospace prepregs
Scanning electron microscopy
Mode I
Interlayer fractureIntralaminar fracture
Interfacial shear strength
Interface fracture
Indentation
Fracture toughness
Fiber/matrix adhesion
Double cantilever beam
Debond
Crack propagation
Composite fabrication
Atomic force microscopy
Summary 'Torayca' T800H/3900-2 is the first material qualified on Boeing Material Specification (BMS 8-276) which utilizes the thermoplastic-particulate interlayer toughening technology. Two manufacturing processes, the autoclave process and the fast heating rated Quickstep™ process, were employed to cure this material. The Quickstep process is a unique composite production technology which utilizes the fast heat transfer rate of fluid to heat and cure polymer composite components. The manufacturing influence on the mode I delamination fracture toughness of laminates was investigated by performing double cantilever beam tests. The composite specimens fabricated by two processes exhibited dissimilar delamination resistance curves (R-curves) under mode I loading. The initial value of fracture toughness GIC-INIT was 564 J/m2 for the autoclave specimens and 527 J/m2 for the Quickstep specimens. However, the average propagation fracture toughness GIC-PROP was 783 J/m2 for the Quickstep specimens, which was 2.6 times of that for the autoclave specimens. The mechanism of fracture occurred during delamination was studied under scanning electron microscope (SEM). Three types of fracture were observed: the interlayer fracture, the interface fracture, and the intralaminar fracture. These three types of fracture played different roles in affecting the delamination resistance curves during the crack growth. More fiber bridging was found in the process of delamination for the Quickstep specimens. Better fiber/matrix adhesion was found in the Quickstep specimens by conducting indentation-debond tests.
Language eng
Field of Research 090199 Aerospace Engineering not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2007, Taylor & Francis Inc
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007120

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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