Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Carbon

Effect of Different Fiber Reinforcements on Some Properties of Prosthetic Socket

Noor K. Faheed; Jawad K. Oleiwi; Qahtan A. Hamad

Engineering and Technology Journal, 2021, Volume 39, Issue 11, Pages 1715-1726
DOI: 10.30684/etj.v39i11.2267

In the perspective of environmental advance, significant attentiveness is being displayed in the usage of natural fibers like reinforcement in polymer composites. This paper focuses on building a prosthetic socket arranged from natural fiber-reinforced composite as an effort to substitute material currently accessible in the manufacturing of the socket. The vacuum bagging procedure was adopted to yield a below-knee socket. The laminates encompass woven flax, sisal, cotton, carbon, person, and glass fabric. The impact of diverse fiber layering sequences on some of the physical and mechanical characteristics was assessed. Laminated specimens were characterized by tests such as (hardness, surface roughness, density, water absorption). The results of this study showed that consuming altered forms of reinforcing materials had an abundant influence on the properties of prepared composite and the values of (hardness, surface roughness, and density) properties improved with increasing of the volume fraction of materials and the best composite specimens were three layers of flax with two layers of carbon fiber, were the hardness property ranges 86 MPa and density of (1.276 gm. /cm3) due to their exceptional mechanical properties. The results of the present study advocate that the arrangement of natural and synthetic reinforcements allows the preparation of bio-composites with enhanced performance.

Effect of (ZnO/MWCNTs) Hybrid Concentrations on Microbial Pathogens Removal

Duha S. Ahmed; Ali L. Abed; Azhar J. Bohan; Jhan Y. Rbat

Engineering and Technology Journal, 2015, Volume 33, Issue 8, Pages 1402-1411

In this study, hybridmaterial like ZnO coated multi-walled carbon nanotubes (ZnO/MWCNTs) was formation by a multistep chemical procedure and evaluated for their application potentials as an antimicrobial agent for slowing down bacterial growth as bacteriostatic and inactivating pathogenic bacteria as bactericidal. The prepared carbon nanotubes and ZnO nanoparticles were investigated by using X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The antimicrobial properties of hybrid material (ZnO/MWCNTs) were tested against Salmonella typhi (S.typhi), Pseudomonas aeruginosa (P. aeruginosa) which are Gram-negative and Staphylococcus aureus (S. aureus) which is Gram-positive by using standard agar dilution (plate count) method.

Mechanical Properties For Pipes Made From Composite Materials (Glass/ Epoxy And Carbon/ Epoxy) Subjected To Internal Pressure

Zainab K. Hantoosh; Hatam Kareem Kadhom; Aseel Jasim Mohammed

Engineering and Technology Journal, 2012, Volume 30, Issue 6, Pages 117-134

Composite Materials have been used extensively in application such as pipes and pressure vessels. Therefore it is important for further studies on the properties of these materials. This paper presents the results from a series of tensile tests on the mechanical properties of composite materials. Specimens cut from pipes made from composite materials were tested under internal pressure loadings have been tested by using a series of ASTM Standards test methods for mechanical properties. Based on the results obtained, the longitudinal E11,
transverse E22 and shear modulus G12 of 101.2 GPa, 5.718 GPa, 4.346 GPa and 36.6, 5.4 GPa, 4.085 GPa for carbon and glass fiber/ epoxy composites, respectively, while the ultimate longitudinal XL, transverse XT and shear tensile τ0 strengths of 1475.4 MPa, 20 MPa, 36 MPa and 618.9 MPa, 14 MPa, 28 MPa for carbon and glass fiber/epoxy composites, respectively. The results from this series of tests have been presented and compared with results from analytical equations. Good agreement was achieved between the experimental results and
analytical results.