scholarly journals Enhancement of Barrier and Mechanical Performance of Steel Coated with Epoxy Filled with Micron and Nano Alumina Fillers

2022 ◽  
Vol 25 ◽  
Author(s):  
D. Saber ◽  
Abdulaziz H. Alghtani ◽  
Emad M. Ahmed ◽  
Bassem F. Felemban ◽  
Hafiz T. Ali ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Nano Alumina

scholarly journals STUDIES ON MORPHOLOGY, MECHANICAL AND OPTICAL PROPERTIES OF PP/HDPE/EVA/ PLA BLEND MODIFIED WITH AL2O3 PARTICLES FOR CAST FILM

2014 ◽  
pp. 90-93
Author(s):  
MONIKA MONIKA ◽  
PRADEEP UPADHYAYA ◽  
VIJAI KUMAR ◽  
NAVIN CHAND
Keyword(s):  
Tensile Strength ◽  
Optical Properties ◽  
Mechanical Performance ◽  
Polymeric Films ◽  
Work Study ◽  
Tear Strength ◽  
Maximum Value ◽  
Nano Alumina ◽  
Twin Screw ◽  
Al2o3 Particles

In this present work, study of mechanical and optical properties of PP/HDPE/EVA/PLA (80/20/5/4) blend reinforced with nano alumina (Al2O3) particles is investigated. In the production process co-rotating twin screw extruder are utilized. Reinforced films are produced with 0.5, 1, 1.5 and 2 phr Al2O3 contents .The screw speed of the extruder is maintained at 150 rpm. After post extrusion, cast films are prepared. Mechanical performance analysis are done in order to examine the change in tensile strength, burst strength, tear strength and kinetic coefficient of friction of the polymeric films. Optical properties are performed for obtaining the data of haze and transmittance. The morphology is studied by Scanning Electron Microscopy (SEM). These results are related to the Al2O3 dispersion, to the type of the different composite formulations with PP/HDPE/EVA/PLA polymer matrix. It has been found that at 0.5 Phr loading of Al2O3 in PP/HDPE/EVA/PLA (80/20/5/4) blend has shown the highest burst and tear strength. On the other hand, the tensile strength shows decreasing order on Al2O3 loading 0.5 to 2 phr. Optical properties such as maximum value of transmittance and haze are also observed as loading of 0.5 Phr of Al2O3 in PP/HDPE/EVA/PLA (80/20/5/4) blend.

scholarly journals Compressive Strength of Cement Mortar Modified with Nano-Alumina in Correlation with Different Water-to-Cement Ratios and Curing Periods -A Statistical Analysis

2020 ◽  
Vol 7 (3) ◽  
pp. 79-98
Author(s):  
Muhammed Abdullah ◽  
◽  
Serwan Rafiq ◽  
Keyword(s):  
Compressive Strength ◽  
Mechanical Performance ◽  
Cement Mortar ◽  
Nonlinear Modeling ◽  
Dry Weight ◽  
Coefficient Of Determination ◽  
Cement Ratio ◽  
Curing Period ◽  
Water To Cement Ratio ◽  
Nano Alumina

One promising insight to extended service life of cement mortar and improve it is durability by assimilating nano mechanism into the cement-based materials. Regardless of many research studies on the effect of nano alumina on the mechanical performance of cement mortar, there has not been a widespread study examining the effect of nano Al2O3, curing period (t), and water-to-cement ratio (w/c) on the compressive strength (σc) of cement mortar. Consequently, this study explores the subject matter which could be helpful for the building and construction field. In this study, the data collected on the compressive strength of the cement mortar modified with different percentages of nano alumina ranging from 0.5% to 13.5% (by dry weight of the cement) were gathered from the literature. A nonlinear modeling NLM and statistical data analysis were performed on above 500 assembled data. The w/c ratio of the cement mortar varied from 0.3% to 0.79%, and the compressive strength of cement mortar modified with nano alumina and cured for 1,7 and 28 up to 90 days leads to high strength ranged from (10 MPa to 68 MPa). The result of NLM showed that curing period has the highest effect on the compressive strength in combination with water to cement ratio and percentage of nano alumina replacement with a coefficient of determination (R2) of 0.85.

Fire Reaction and Mechanical Performance Analyses of Polymer Concrete Materials Modified with Micro and Nano Alumina Particles

2013 ◽  
Vol 19 (2-3) ◽  
pp. 195-202 ◽  
Author(s):  
M. C. S. Ribeiro ◽  
C. M. C. Pereira ◽  
S. P. B. Sousa ◽  
P. R. O. Nóvoa ◽  
A. J. M. Ferreira
Keyword(s):  
Mechanical Performance ◽  
Polymer Concrete ◽  
Nano Alumina ◽  
Alumina Particles ◽  
Performance Analyses ◽  
Concrete Materials

The Mechanical Performance of Carbon Fibres- Addressing the Role of Microstructure

2019 ◽  
Author(s):  
Peter Peter ◽  
Claudia Creighton ◽  
David Fox ◽  
Pablo Mota Santiago ◽  
Adrian Hawley ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Carbon Fibres

Microstructural and Mechanical Behaviour Evaluation of Mg-Al-Zn Alloy Friction Stir Welded Joint

2020 ◽  
Vol 17 (3) ◽  
pp. 8150-8159
Author(s):  
Kulwant Singh ◽  
Gurbhinder Singh ◽  
Harmeet Singh
Keyword(s):  
Heat Treatment ◽  
Friction Stir Welding ◽  
Magnesium Alloys ◽  
Mechanical Performance ◽  
Fuel Efficiency ◽  
Research Work ◽  
Grain Structure ◽  
Tensile Fracture ◽  
Friction Stir ◽  
The Impact

The weight reduction concept is most effective to reduce the emissions of greenhouse gases from vehicles, which also improves fuel efficiency. Amongst lightweight materials, magnesium alloys are attractive to the automotive sector as a structural material. Welding feasibility of magnesium alloys acts as an influential role in its usage for lightweight prospects. Friction stir welding (FSW) is an appropriate technique as compared to other welding techniques to join magnesium alloys. Field of friction stir welding is emerging in the current scenario. The friction stir welding technique has been selected to weld AZ91 magnesium alloys in the current research work. The microstructure and mechanical characteristics of the produced FSW butt joints have been investigated. Further, the influence of post welding heat treatment (at 260 °C for 1 h) on these properties has also been examined. Post welding heat treatment (PWHT) resulted in the improvement of the grain structure of weld zones which affected the mechanical performance of the joints. After heat treatment, the tensile strength and elongation of the joint increased by 12.6 % and 31.9 % respectively. It is proven that after PWHT, the microhardness of the stir zone reduced and a comparatively smoothened microhardness profile of the FSW joint obtained. No considerable variation in the location of the tensile fracture was witnessed after PWHT. The results show that the impact toughness of the weld joints further decreases after post welding heat treatment.

NUMERICAL STUDY ON THE MECHANICAL PERFORMANCE OF GRAPHENE BRIDGES ON SILLICON THIN FILM TRANSISTORS

2011 ◽  
Author(s):  
Byung-Jae Kim ◽  
Hyeon-Seok Seo ◽  
Won-Ho Lee ◽  
Jong-Hyun Ahn ◽  
Youn-Jea Kim
Keyword(s):  
Thin Film ◽  
Thin Film Transistors ◽  
Mechanical Performance ◽  
Numerical Study
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