Environmental degradation of carbon nanotube-modified composite laminates: a study of electrical resistivity

2009 ◽  
Vol 45 (1) ◽  
pp. 21-32 ◽  
Author(s):  
N. M. Barkoula ◽  
A. Paipetis ◽  
T. Matikas ◽  
A. Vavouliotis ◽  
P. Karapappas ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Carbon Nanotube ◽  
Environmental Degradation ◽  
Composite Laminates

Structural Health Monitoring for Carbon Fiber/Carbon Nanotube (CNT)/Epoxy Composite Sensor

2006 ◽  
Vol 321-323 ◽  
pp. 290-293 ◽  
Author(s):  
Sang Il Lee ◽  
Dong Jin Yoon
Keyword(s):  
Electrical Resistivity ◽  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Epoxy Composite ◽  
Structural Safety ◽  
Structural Health ◽  
Nanotube Composites ◽  
Carbon Fiber Epoxy

Structural health monitoring for carbon nanotube (CNT)/carbon fiber/epoxy composite was verified by the measurement of electrical resistivity. This study has focused on the preparation of carbon nanotube composite sensors and their application for structural health monitoring. The change of the electrical resistance was measured by a digital multimeter under tensile loads. Although a carbon fiber was broken, the electrical connection was still kept by distributed CNT particles in the model composites. As the number of carbon fiber breakages increased, electrical resistivity was stepwise increased. The CNT composites were well responded with fiber damages during the electro-micromechnical test. Carbon nanotube composites can be useful sensors for structural health monitoring to diagnose a structural safety and to prevent a collapse.

scholarly journals Synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates

2018 ◽  
Vol 166 ◽  
pp. 160-168 ◽  
Author(s):  
Estelle Kalfon-Cohen ◽  
Reed Kopp ◽  
Carolina Furtado ◽  
Xinchen Ni ◽  
Albertino Arteiro ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Composite Laminates ◽  
Synergetic Effects

Lightning strike damage on the composite laminates with carbon nanotube films: Protection effect and damage mechanism

2019 ◽  
Vol 168 ◽  
pp. 342-352 ◽  
Author(s):  
Jikui Zhang ◽  
Xianglin Zhang ◽  
Xiaoquan Cheng ◽  
Yanwei Hei ◽  
Liying Xing ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Composite Laminates ◽  
Damage Mechanism ◽  
Lightning Strike ◽  
Protection Effect ◽  
Nanotube Films

Experimental Research on the Conductive Property of MWCNT Nanopaper

2015 ◽  
Vol 727-728 ◽  
pp. 137-140
Author(s):  
A Ying Zhang
Keyword(s):  
Electrical Conductivity ◽  
Electrical Resistivity ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
The Self ◽  
Vacuum Deposition ◽  
Temperature Dependent ◽  
Polycarbonate Membrane ◽  
Multi Walled Carbon Nanotube ◽  
Conductive Property

This paper presents a systematic study of the nano-sized structure and temperature dependent electrical properties. A method of synthesizing the self-assembled multi-walled carbon nanotube (MWCNT) nanopaper on hydrophilic polycarbonate membrane was explored. The process is based on the very well-defined dispersion of nanotube and controlled pressure vacuum deposition procedure. The experiment results show that the ratio changes of MWCNT in the nanopaper could lead to the changes in the electrical conductivity efficiency of the nanopaper. Furthermore, the electrical resistivity of MWCNT nanopaper decreased as temperature increase.

Interlaminar Tensile Strength of CFRP Composites Reinforced With Interleaved Carbon Nanotube Sheets

2014 ◽  
Author(s):  
Benjamin L. Levy-Wendt ◽  
Alaina M. Bever ◽  
Nicholaus C. Wright ◽  
Timothy J. Venable ◽  
John P. Dally ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Composite Laminates ◽  
Specimen Thickness ◽  
Curved Beam ◽  
Bending Tests ◽  
Reinforced Polymer ◽  
Cfrp Composites ◽  
Beam Bending

Unidirectional carbon-fiber-reinforced polymer (CFRP) composites with interleaved carbon nanotube (CNT) sheets were manufactured using a heated press. The effect of CNT sheets on the interlaminar tensile strength (ILTS) of composite laminates was measured using curved beam bending tests. Two sets of [0]24 T800S/3900-2B specimen were prepared using carbon fiber prepregs and non-woven CNT sheets, with specimen thickness and radial geometries conforming to ASTM D6415. Epoxy resin loaded CNT sheets were inserted in the mid-radius region of curved beam specimens during the lay-up process. The measured interlaminar tensile strengths (ILTS) were compared between the CNT-enhanced and baseline CFRP specimens. Specimen fracture surfaces were examined with optical microscopy to determine the mode of failure and to confirm that fracture occurred at the location with the highest radial stresses. CNT sheet enhancements have shown to improve ILTS by 42%, with all failures initiating at the CNT interlayer and the polymer matrix interface.

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