What is it about?
The effectiveness of nanofillers with different morphologies on fatigue damage development and their micro/nano reinforcing mechanisms were discussed. The fatigue tests with positive cycling pressure loading were performed at three different load levels as 50%, 60%, and 70% of the static burst strength of each samples. S–N curves were obtained according to fatigue test and lifetime of the fabricated hybrid composite pipes were evaluated.
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Why is it important?
In filament wound composite pipes matrix cracking, as an initial damage mechanism during fatigue loading, can initiate a damage sequence that can result in catastrophic failure of the pipes. Matrix modification using nanostructured fillers is an emerging approach to develop new fatigue-resistant composite materials. The aim of this study to investigate the fatigue performance experimentally, and observe macroscopic and microscopic damage mechanisms of carbon fiber/epoxy filament wound composite pipes toughened by carbon nanotubes (CNTs) and boron nitride nanoplates (BNNPs).
Perspectives
This paper discusses the effectiveness of nanofillers with different morphologies on fatigue damage development and their micro/nano reinforcing mechanisms for carbon fiber/epoxy filament winding hybrid pipes. The conclusion is the difference in morphologies of nanofillers governed different nanoscale toughening mechanisms such as crack bridging and pullout for CNTs while crack pinning and bifurcation for BNNPs modified hybrid pipes.
Dr. Volkan Eskizeybek
Canakkale Onsekiz Mart Universitesi
Read the Original
This page is a summary of: Enhanced fatigue performances of hybrid nanoreinforced filament wound carbon/epoxy composite pipes, Composite Structures, August 2016, Elsevier,
DOI: 10.1016/j.compstruct.2016.05.012.
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