skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Modeling of interface behavior in carbon nanotube composites.

Abstract

This research focuses on the development of a constitutive model for carbon nanotube polymer composites incorporating nanoscale attributes of the interface between the nanotube and polymer. Carbon nanotube polymer composites exhibit promising properties, as structural materials and the current work will motivate improvement in their load transfer capabilities. Since separation events occur at different length and time scales, the current work also addresses the challenge of multiscale modeling in interpreting inputs at different length and time scales. The nanoscale phase separation phenomena are investigated using molecular dynamics (MD) simulations. The simulations based on MD provide grounds for developing a cohesive zone model for the interface based on laws of thermodynamics.

Authors:
;  [1];  [1]
  1. (Texas A&M University, College Station, TX)
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
948671
Report Number(s):
SAND2006-2732C
TRN: US200907%%146
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference held May 1-4, 2006 in Newport, RI.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON; NANOTUBES; POLYMERS; COMPOSITE MATERIALS; COMPUTERIZED SIMULATION; INTERFACES; MOLECULAR DYNAMICS METHOD

Citation Formats

Hammerand, Daniel Carl, Awasthi, Amnaya P., and Lagoudas, Dimitris C. Modeling of interface behavior in carbon nanotube composites.. United States: N. p., 2006. Web.
Hammerand, Daniel Carl, Awasthi, Amnaya P., & Lagoudas, Dimitris C. Modeling of interface behavior in carbon nanotube composites.. United States.
Hammerand, Daniel Carl, Awasthi, Amnaya P., and Lagoudas, Dimitris C. Mon . "Modeling of interface behavior in carbon nanotube composites.". United States. doi:.
@article{osti_948671,
title = {Modeling of interface behavior in carbon nanotube composites.},
author = {Hammerand, Daniel Carl and Awasthi, Amnaya P. and Lagoudas, Dimitris C.},
abstractNote = {This research focuses on the development of a constitutive model for carbon nanotube polymer composites incorporating nanoscale attributes of the interface between the nanotube and polymer. Carbon nanotube polymer composites exhibit promising properties, as structural materials and the current work will motivate improvement in their load transfer capabilities. Since separation events occur at different length and time scales, the current work also addresses the challenge of multiscale modeling in interpreting inputs at different length and time scales. The nanoscale phase separation phenomena are investigated using molecular dynamics (MD) simulations. The simulations based on MD provide grounds for developing a cohesive zone model for the interface based on laws of thermodynamics.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • No abstract prepared.
  • This paper deals with the study of the influence of fiber/matrix interface on the fatigue behavior of unidirectional carbon/epoxy composites. These materials are based on a T300/DGEBA/DDM system and the sizing nature, fiber oxidation, and degree of cure are varied independently. The interfacial properties were evaluated by the microdebonding test. The results show the good adhesion developed in the systems. The epoxy specific sizing increases the interfacial strength and the lack of oxidation treatment slightly decreases it. In three-point bending, the failures of the composites all appear on the compressive side, due to undesirable fiber kinking phenomena. To overcome thesemore » difficulties, which are linked to the compressive effects of the loading nose, a compression bending test was adapted to perform monotonic as well as fatigue tests. Under this configuration, progressive failure initiates on the tensile side and slowly propagates through the thickness of the sample. The Woehler`s curves can be plotted with moderate scattering. They are very flat, in comparison to the GFRP curves, and thus show the excellent fatigue behavior of these materials. The effect of the interface on both the monotonic and cyclic behaviors is clearly pointed out. The lack of fiber oxidation increases the monotonic properties without changing the fatigue resistance significantly. On the other hand, a slight matrix under-cure leads to a better intrinsic fatigue resistance but to smaller properties-to-failure. The analysis of both monotonic and cyclic properties reveals the existence of different optima depending on the interfacial properties.« less
  • Unique carbon nanotubes were prepared by using anodic aluminium oxide film as template. Carbon was deposited on the pore wall of the alumina by pyrolyzing propylene at 1073K. The template was then dissolved by HF and HCl solution to liberate carbon tubes. The number, length and diameter were exactly same as those of template, and furthermore the thickness of carbon tube could be controlled by the deposition time. Therefore it can be said that we can prepare tailor-made carbon tubes with a very uniform size. This unique tube may have a great potential as catalyst support. An attempt to putmore » some metal component on the inner surface of tube was attempted as follows. The platinum salt in aqueous solution was impregnated in the carbon/template composite, and then it was treated with hydrogen to reduce the salt. Then the template was removed as above. Platinum metal could be loaded only inside of the tube.« less
  • No abstract prepared.
  • No abstract prepared.