Mode II delamination of woven mengkuang fiber/woven silk laminated hybrid composites

2016 ◽  
Vol 58 (4) ◽  
pp. 374-380 ◽  
Author(s):  
Mohd Azwan Husin ◽  
Rozli Zulkifli ◽  
Shahrum Abdullah ◽  
Wan Ramli Wan Daud
Keyword(s):  
Hybrid Composites ◽  
Mode Ii

KELAKUAN DELAMINASI KOMPOSIT LAMINAT HIBRID ANYAMAN GENTIAN MENGKUANG/ GENTIAN ASLI SUTERA/ EPOKSI

2016 ◽  
Vol 78 (6-9) ◽  
Author(s):  
Mohd Azwan Husin ◽  
Rozli Zulkifli ◽  
Shahrum Abdullah ◽  
Wan Ramli Wan Daud
Keyword(s):  
Natural Fiber ◽  
Hybrid Composites ◽  
Strain Energy Release ◽  
Silk Fiber ◽  
Mode Ii ◽  
Silk Fibre ◽  
Sem Images ◽  
Natural Silk ◽  
Manufacturing Techniques ◽  
Composite Samples

Recent advances in research and manufacturing techniques of natural fiber based composites have allowed the manufacturers to use natural fiber based composites in various applications. Natural fiber based composites are fast emerging as viable alternative to traditional materials due to their unique properties. This paper discusses the development of new natural fiber hybrid composites using mengkuang and silk fibre to achieve a unique natural fiber composites. The effects of hybridization between woven mengkuang / natural silk fiber on mode II delamination (GIIC) of laminated composites were investigated by performing the End-Notched Flexure (ENF) test. The composite samples were prepared using hand lay-up method with compression machine. After fabrication, the test specimens were subjected to ENF testing for mode II delamination based on ASTM D790-03 standards. The additional of natural silk fiber in composites fabrication provided an excellent improvement in the rate of critical strain energy release, GIIC. The Scanning Electronic Microscope (SEM) images show the delamination behaviour of the samples after failure is based on the arrangement of mengkuang and silk fibre.

Mode II Interlaminar Fracture Toughness of CNF-CFRP Hybrid Composite

2006 ◽  
Author(s):  
Masahiro Arai ◽  
Koh-Ichi Sugimoto ◽  
Morinobu Endo
Keyword(s):  
Fracture Toughness ◽  
Carbon Fiber ◽  
Hybrid Composites ◽  
Beam Theory ◽  
Mode Ii ◽  
Interlaminar Fracture Toughness ◽  
Interlaminar Fracture ◽  
Cfrp Laminates ◽  
Nano Fiber ◽  
Hybrid Laminates

Interlaminar fracture toughness for mode II deformation were investigated for carbon fiber (CF)/epoxy laminates toughened by carbon-nano-fiber/epoxy interlayer. Vapor grown carbon fiber (VGCF) and vapor grown carbon ‘nano’ fiber (VGNF) were chosen as the stiffeners for the interlayer. In order to illustrate the effect of the interlayer on the model II fracture toughness of the laminates, several types of CFRP/CNF hybrid laminates were fabricated, which are composed of unidirectional prepregs and carbon nano fiber varying the thickness of the interlayer. Mode II interlaminar fracture toughnesses of the hybrid composites were evaluated by end notched flexure (ENF) test using short-type beam specimens. The fracture toughnesses were calculated by traditional beam theory using the energy release rate of the crack. From the experimental results, it is confirmed that the mode II interlaminar fracture toughnesses for hybrid laminates are from 2.0 to 3.0 times higher than that of original CFRP laminates, and the optimal thickness (area density) of the CNF interlayer exists. The difference in the effect of the interlayer fracture properties under mode II deformation was discussed on the bases of fractographic observations derived from scanning electric microscope.

Morphology and properties of PA6 hybrid composites filled with short carbon fibers and organoclay

2016 ◽  
Vol 2 (3) ◽  
pp. 47-57 ◽  
Author(s):  
S.S. Pesetskii ◽  
S.P. Bogdanovich ◽  
V.V. Dubrovskii ◽  
T.M. Sodyleva ◽  
V.N. Aderikha ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Hybrid Composites ◽  
Short Carbon

Influence of Multiwall Carbon Nanotube on mechanical and wear properties of Copper – Iron composite

2020 ◽  
Vol 17 (1) ◽  
pp. 7570-7576 ◽  
Author(s):  
H. Sh. Hammood ◽  
S. S. Irhayyim ◽  
A. Y. Awad ◽  
H. A. Abdulhadi
Keyword(s):  
Carbon Nanotubes ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Hydraulic Press ◽  
Dry Sliding Wear ◽  
Multiwall Carbon Nanotube ◽  
Wear Properties ◽  
Sem Images ◽  
Wear Rates ◽  
Multiwall Carbon

Multiwall Carbon nanotubes (MWCNTs) are frequently attractive due to their novel physical and chemical characteristics, as well as their larger aspect ratio and higher conductivity. Therefore, MWCNTs can allow tremendous possibilities for the improvement of the necessarily unique composite materials system. The present work deals with the fabrication of Cu-Fe/CNTs hybrid composites manufactured by powder metallurgy techniques. Copper powder with 10 vol. % of iron powder and different volume fractions of Multi-Wall Carbon Nanotubes (MWCNTs) were mixed to get hybrid composites. The hybrid composites were fabricated by adding 0.3, 0.6, 0.9, and 1.2 vol.% of MWCNTs to Cu- 10% Fe mixture using a mechanical mixer. The samples were compressed under a load of 700 MPa using a hydraulic press to compact the samples. Sintering was done at 900°C for 2 h at 5ºC/min heating rate. The microscopic structure was studied using a Scanning Electron Microscope (SEM). The effect of CNTs on the mechanical and wear properties, such as micro-hardness, dry sliding wear, density, and porosity were studied in detail. The wear tests were carried out at a fixed time of 20 minutes while the applied loads were varied (5, 10, 15, and 20 N). SEM images revealed that CNTs were uniformly distributed with relative agglomeration within the Cu/Fe matrix. The results showed that the hardness, density, and wear rates decreased while the percentage of porosity increased with increasing the CNT volume fraction. Furthermore, the wear rate for all the CNTs contents increased with the applied load.

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