Analytical and Numerical Analysis of Extrusion Force, Stress and Strain Development During Extrusion Al6063-SiC Composite
Fentahun Workie,
Assefa Tesfaye
Issue:
Volume 5, Issue 1, June 2021
Pages:
1-16
Received:
15 February 2021
Accepted:
1 April 2021
Published:
29 April 2021
DOI:
10.11648/j.cm.20210501.11
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Abstract: Nowadays composite material are highly interesting in different areas like, aerospace, thermal management, automotive application, and electronic products etc. Aluminium based metal matrix with silicon carbide as particle reinforcements called discontinuous reinforced metal matrix composite materials. It has excellent mechanical properties like high yield strength, wear resistance, corrosion resistance and vibration resistance. During the development of discontinuous reinforcement metal matrix composites compression process like, extrusion is an advisable secondary process for homogenous distribution of the reinforcement’s materials through the metal matrix. This research was investigated the metal flow behavior of extrusion load, stress and strain distribution of Al6063/Sic based discontinuous reinforcement metal matrix composite. The billets extruded from round billet to square shape and are used for different applications. Third order polynomial and cosine die profiles were used as extrusion dies for this research by taking 30%, 60% and 90% area reductions. Depends on these three different area reductions upper bound and DEFORM 3D finite element analysis method were used to analyze analytically and numerically respectively. Due to these different area reductions, the extrusion load was minimum in cosine die profiles both analytical and numerical results. In 30% of area reduction cosine die profile has optimum load (878.59N) and it used to extrude Al6063/20%SiC composite billet materials from 20mm input diameter to 14.8x14.8mm output square sides. Therefore, 30% area reduction cosine die profile has minimum extrusion load as compare other area reduction of cosine die and 3rd order polynomial dies. It is used as extrusion die for Al6063/SiC composite materials to optimum extrusion loads in different % of area reduction of square shape extruded.
Abstract: Nowadays composite material are highly interesting in different areas like, aerospace, thermal management, automotive application, and electronic products etc. Aluminium based metal matrix with silicon carbide as particle reinforcements called discontinuous reinforced metal matrix composite materials. It has excellent mechanical properties like hig...
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Layered 2D Transition Metal Dichalcogenides (MX2; M=Mo, W; X=S, Se, Te) Nanosheets and Their Composites for Photocatalytic Applications: A Review
Divya,
Shivam Rai,
Tina Chakrabarty,
Arnab Kanti Giri
Issue:
Volume 5, Issue 1, June 2021
Pages:
17-29
Received:
17 June 2021
Accepted:
2 July 2021
Published:
13 July 2021
DOI:
10.11648/j.cm.20210501.12
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Abstract: Current, in-depth research on layered two-dimensional transition metal dichalcogenides (2D-TMDCs) has been triggered by a progression of investigative theoretical predictions and experimental observations of unanticipated electronic, optical and photochemical properties in nanosheets and their composites of this family of materials, especially their most archetypal member, MoS2. MoS2 nanosheets show a fantastic array of properties to be a potential candidate as an active photochemical agent, thus contributing to the gateway of an immense number of problems. However, from the past 2-3 years, the other family members, MoX2 (X=Se, Te) and WX2 (X=S, Se, and Te), are stepping out of the shadows of the famous molybdenum disulfide and establishing their own identity. This review aims to arrange and combine information on photocatalytic hydrogen production, water splitting, dye degradation, visible light photocatalytic activity, photocatalytic CO2 reduction, and environmental remediation of layered 2D-TMDCs nanosheets and their composites. Due to the popularity of MoS2, the central focus of the review is on MoSe2, MoTe2, WS2, WSe2. This work presents a systematic report on the applications of various 2D metal dichalcogenides as a whole, exploring their prime role in enhancing individual performance like the evolution of hydrogen gas, reduction of CO2, and degradation of toxic dyes or pollutants. All such treatments are of utmost significance for having a better environment to live. Thus, this specifies the importance of 2D-TMDCs towards the attainment of a sustainable homeland. In recent years WTe2 has emerged as a potential candidate for giant magnetoresistance and superconductivity. However, in the case of photocatalytic applications, it is not very economical for commercial development. Therefore, WTe2 is excluded from our discussion.
Abstract: Current, in-depth research on layered two-dimensional transition metal dichalcogenides (2D-TMDCs) has been triggered by a progression of investigative theoretical predictions and experimental observations of unanticipated electronic, optical and photochemical properties in nanosheets and their composites of this family of materials, especially thei...
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