Internal Damage Analysis of Braided Composites Embedded in Carbon Nanotube Yarn

Carbon nanotube (CNT) yarn sensors were embedded in 3D braided composites in the form of arrays to detect the internal damage of specimens and study the internal damage monitoring of the 3D braided composites. The signals collected by the sensor array of CNT yarn were preprocessed using the dynamic wavelet threshold algorithm. The exact position of the damage was calculated based on the main features of the resistance signal matrix, which was calculated using the quadratic matrix singular value. The results show that the internal damage localization of the specimens was consistent with the actual damage. The localizations in this study can provide a basis for enhancing the structural health monitoring of smart 3D braided composites.

Download Full-text

Internal damage detection of three-dimensional four-step six-directional braided composites based on carbon nanotube thread sensor

Insight - Non-Destructive Testing and Condition Monitoring ◽

10.1784/insi.2017.59.10.537 ◽

2017 ◽

Vol 59 (10) ◽

pp. 537-543 ◽

Cited By ~ 1

Author(s):

Z Wan ◽

Z Zhang ◽

M Jia ◽

W Bao ◽

Q Dong

Keyword(s):

Carbon Nanotube ◽

Damage Detection ◽

Three Dimensional ◽

Braided Composites ◽

Internal Damage

Download Full-text

Damage characterization of 3D braided composites using carbon nanotube-based in situ sensing

Composites Part A Applied Science and Manufacturing ◽

10.1016/j.compositesa.2010.06.016 ◽

2010 ◽

Vol 41 (10) ◽

pp. 1531-1537 ◽

Cited By ~ 56

Author(s):

Kyoung Ju Kim ◽

Woong-Ryeol Yu ◽

Joon Seok Lee ◽

Limin Gao ◽

Erik T. Thostenson ◽

...

Keyword(s):

Carbon Nanotube ◽

Braided Composites ◽

3D Braided Composites ◽

Damage Characterization ◽

In Situ Sensing

Download Full-text

Progressive damage analysis of 3D braided composites using FFT-based method

Composite Structures ◽

10.1016/j.compstruct.2018.02.040 ◽

2018 ◽

Vol 192 ◽

pp. 255-263 ◽

Cited By ~ 24

Author(s):

Bing Wang ◽

Guodong Fang ◽

Shuo Liu ◽

Maoqing Fu ◽

Jun Liang

Keyword(s):

Progressive Damage ◽

Damage Analysis ◽

Braided Composites ◽

3D Braided Composites

Download Full-text

A Method of 3D Braided Composites Damage Monitoring

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.743.861 ◽

2015 ◽

Vol 743 ◽

pp. 861-865 ◽

Cited By ~ 1

Author(s):

Hua Zhang ◽

Y.C. Xiao ◽

Ming Li ◽

G.Q. Liu ◽

Jie Zhang

Keyword(s):

Lamb Wave ◽

Damage Index ◽

Piezoelectric Sensors ◽

Energy Change ◽

Fatigue Load ◽

Braided Composites ◽

Index Method ◽

Signal Energy ◽

3D Braided Composites ◽

Damage Monitoring

L shaped braided composites under fatigue load was researched, using piezoelectric sensors and active Lamb wave monitoring technology. HHT transform based signal envelope obtaining method and the damage index method based on signal energy change were used to monitor the damage extending of the braided composites.

Download Full-text

Strain-Sensing Characteristics of Carbon Nanotube Yarns Embedded in Three-Dimensional Braided Composites under Cyclic Loading

Discrete Dynamics in Nature and Society ◽

10.1155/2021/2427954 ◽

2021 ◽

Vol 2021 ◽

pp. 1-9

Author(s):

Huixiao Bai ◽

Gang Ding ◽

Shusheng Jia ◽

Jinguo Hao

Keyword(s):

Carbon Nanotube ◽

Cyclic Loading ◽

Damage Accumulation ◽

Three Dimensional ◽

Progressive Damage ◽

Strain Sensing ◽

Braided Composites ◽

3D Braided Composites ◽

Sensing Characteristics ◽

Carbon Nanotube Yarns

Carbon nanotube yarns are embedded in three-dimensional (3D) braided composites with five-axis yarns, which are used as strain sensors to monitor the damage of 3D braided composites. In the cyclic mechanical loading experiment, the strain-sensing characteristics of 3D braided composites were studied by in situ measuring the resistance change of the embedded carbon nanotube yarn. The 3D five-directional braided composite prefabricated part based on carbon nanotube yarns was developed, and the progressive damage accumulation experiments were carried out on carbon nanotube yarns and specimens embedded in carbon nanotube yarns. The research results show that there is a good correlation between the change of relative resistance of the carbon nanotube yarn and the strain of the composite specimen during cyclic loading and unloading. When the tensile degree of the specimen increases beyond a certain range, the carbon nanotube yarn sensor embedded in the specimen shows resistance hysteresis and produces residual resistance. Therefore, the fiber can better monitor the progressive damage accumulation of 3D five-direction braided composites.

Download Full-text