Unsupervised learning for classification of acoustic emission events from tensile and bending experiments with open-hole carbon fiber composite samples

2015 ◽  
Vol 107 ◽  
pp. 89-97 ◽  
Author(s):  
Hisham A. Sawan ◽  
Mark E. Walter ◽  
Brooks Marquette
Keyword(s):  
Acoustic Emission ◽  
Carbon Fiber ◽  
Unsupervised Learning ◽  
Fiber Composite ◽  
Carbon Fiber Composite ◽  
Open Hole ◽  
Composite Samples

Toughness Properties of Basalt/Carbon Fiber Hybrid Composites

2010 ◽  
Vol 150-151 ◽  
pp. 732-735 ◽  
Author(s):  
Chun Hua Zhang ◽  
Jin Bao Zhang ◽  
Mu Chao Qu ◽  
Jian Nan Zhang
Keyword(s):  
Carbon Fiber ◽  
Composite Laminates ◽  
Laminate Composite ◽  
Hybrid Composites ◽  
Fiber Composite ◽  
Basalt Fiber ◽  
Carbon Fiber Composites ◽  
Carbon Fiber Composite ◽  
Carbon Fiber Laminate ◽  
Open Hole

Basalt fiber and carbon fiber hybrid with alternate stacking sequences reinforced epoxy composites have been developed to improve the toughness properties of conventional carbon fiber reinforced composite materials. For comparison, plain carbon fiber laminate composite and plain basalt fiber laminate composite have also been fabricated. The toughness properties of each laminate have been studied by an open hole compression test. The experimental results confirm that hybrid composites containing basalt fibers display 46% higher open hole compression strength than that of plain carbon fiber composites. It is indicated that the hybrid composite laminates are less sensitive to open hole compared with plain carbon fiber composite laminate and high toughness properties can be prepared by fibers' hybrid.

Research on Failure Mechanism of Carbon Fiber Composite Materials Basing on Acoustic Emission

2013 ◽  
Author(s):  
Yan-Lei Liu ◽  
Wei-Zhong Li ◽  
Fu-Yong Xia ◽  
Bing Wang ◽  
Shu-Xin Han ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Composite Laminate ◽  
Fiber Composite ◽  
Acoustic Emission Technique ◽  
Carbon Fiber Composite ◽  
Emission Testing ◽  
Different Characteristics ◽  
Fiber Composite Materials

Tensile process of carbon fiber composite laminate was monitored by acoustic emission technique. And the acoustic emission signals by tensile specimens of different winding angles were analyzed. The results show that carbon fiber released signals of different characteristics in different stages. So, the acoustic emission technique can effectively distinguish the different stages such as delaminating, detaching and fracture. Also, different angles in specimen’s layers of carbon fiber had different mechanical properties and failure mechanisms. Analysis on experimental data showed that acoustic emission testing technique can determine the process of different internal activities in carbon fiber composite laminate. Therefore, it can be used in the integrity evaluation for carbon fiber composite materials.

Prestressed Carbon Fiber Composite Overwrapped Gun Tube

2008 ◽  
Author(s):  
Andrew Littlefield ◽  
Edward Hyland ◽  
Jack Keating
Keyword(s):  
Carbon Fiber ◽  
Fiber Composite ◽  
Carbon Fiber Composite
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