Effect of tool shoulder diameter on the friction stir welding of AA 5083-Cu ETP and AA 6061-Cu ETP

by Arpan RoutM.Tech

Self-healing Coal fly ash Construction Brick for CO2 and Dust Adsorption

As a common byproduct of thermal power plants, coal fly ash (CFA) is often dumped in landfills, where it can cause environmental damage. As a result, in this work, porous construction bricks were made utilizing a byproduct of a thermal power plant, coal fly ash, and baking yeast to absorb carbon dioxide and dust. Yeast was utilized for pore formation, CFA detoxifying, and crack repair. The physical properties of prepared porous bricks are characterized using .X-ray diffraction (XRD), scanning electron microscopy (SEM), confocal microscopy (CM), and Fourier transform infrared spectroscopy (FTIR) According to the XRD analysis, the brick is made up of quartz, hematite, and mullite. The Porous Brick absorbed 36% of water and 2.5% of dust. The porous fly ash brick has demonstrated superior strength (17.5MPa) and load bearing capacity as compared to traditional bricks in compressive testing. For analysis of the fly ash bricks' ability to absorb carbon dioxide, a gas chromatograph equipped with a Flame Ionization Detector (FID) was utilized. A high adsorption capability of 94.69 percent of CO2 was found for the produced geopolymer bricks. The yeast involvement promote and facilitates the self-healing ability of the coal flay ash brick (CFB)

Self-healing Coal fly ash Construction Brick for CO2 and Dust Adsorption

As a common byproduct of thermal power plants, coal fly ash (CFA) is often dumped in landfills, where it can cause environmental damage. As a result, in this work, porous construction bricks were made utilizing a byproduct of a thermal power plant, coal fly ash, and baking yeast to absorb carbon dioxide and dust. Yeast was utilized for pore formation, CFA detoxifying, and crack repair. The physical properties of prepared porous bricks are characterized using .X-ray diffraction (XRD), scanning electron microscopy (SEM), confocal microscopy (CM), and Fourier transform infrared spectroscopy (FTIR) According to the XRD analysis, the brick is made up of quartz, hematite, and mullite. The Porous Brick absorbed 36% of water and 2.5% of dust. The porous fly ash brick has demonstrated superior strength (17.5MPa) and load bearing capacity as compared to traditional bricks in compressive testing. For analysis of the fly ash bricks' ability to absorb carbon dioxide, a gas chromatograph equipped with a Flame Ionization Detector (FID) was utilized. A high adsorption capability of 94.69 percent of CO2 was found for the produced geopolymer bricks. The yeast involvement promote and facilitates the self-healing ability of the coal flay ash brick (CFB)

Atomically locked interfaces of metal (Aluminum) and polymer (Polypropylene) using mechanical friction

Joining different parts is one of the crucial components of designing/engineering of materials. Presently, the current energy efficient low weight automotive and aerospace components consist of a different class of materials, such as metals, polymers, ceramics, etc. Joining these components remains a challenge. Here, we demonstrate metal (aluminum) and polymer (Polypropylene, pp) joining using mechanical friction. The detailed characterization clearly demonstrates that atomically locked interfaces are formed in such joining and no chemical bonds are formed during the joining. Also, a waterproof and strong interface is formed in such a process. Fully atomistic molecular dynamics simulations were also carried out in order to further gain insights on the joining process.by Arpan Rout, Prafull Pandey, Eliezer Fernando Oliveira, Pedro Alvesda Silva Autreto, Anurag Gumaste, Amit Singh, Douglas Soares Galvao, Amit Arora and Chandra Sekhar Tiwar

Bioinspired aluminum composite reinforced with soft polymers with enhanced strength and plasticity

Composites have played a key role in revolutionizing the automobile, marine, and aerospace industries. There is a constant attempt for the development of low‐density composite materials with superior mechanical and corrosion‐resistant properties for elevated temperature applications. Herein, an attempt is made to develop a nature‐inspired unique aluminum‐based composite with low‐density polymer (polyethylene terephthalate, i.e., soft material) reinforcement, which shows an enhancement in strength and toughness. The composite is processed using the easily scalable and simple friction stir processing technique. Mechanical properties of the uniformly reinforced aluminum composite show double ultimate strength and fivefold improvement in plasticity. The ultimate strength of the composite increases at elevated temperatures. The experimental observations are further supported by theoretical calculations and molecular dynamics simulations223CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQCOORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPNão temNão tem2016/18499-0; 2019/07157-9; 2013/08293-7A.R., A.G., P.P. contributed equally to this work. E.F.O. would like to thank the Brazilian agency FAPESP (grants 2016/18499 0 and 2019/07157 9) for financial support. Computational and financial support from the Center for Computational Engineering and Sciences at Unicamp through the FAPESP/CEPID grant no. 2013/08293 7 is also acknowledged. D.S.G. also acknowledges support from CAPES and CNPq. Some of the authors would like to thank the Board of Research in Nuclear Sciences (BRNS) (project no.: 57/14/05/2019-BRNS) for the financial support. C.S.T. was thankful for the support by AOARD grant no. FA2386 19 1 4039. CST acknowledges Ramanujan fellowshi

Abstracts of National Conference on Research and Developments in Material Processing, Modelling and Characterization 2020

This book presents the abstracts of the papers presented to the Online National Conference on Research and Developments in Material Processing, Modelling and Characterization 2020 (RDMPMC-2020) held on 26th and 27th August 2020 organized by the Department of Metallurgical and Materials Science in Association with the Department of Production and Industrial Engineering, National Institute of Technology Jamshedpur, Jharkhand, India. Conference Title: National Conference on Research and Developments in Material Processing, Modelling and Characterization 2020Conference Acronym: RDMPMC-2020Conference Date: 26–27 August 2020Conference Location: Online (Virtual Mode)Conference Organizer: Department of Metallurgical and Materials Engineering, National Institute of Technology JamshedpurCo-organizer: Department of Production and Industrial Engineering, National Institute of Technology Jamshedpur, Jharkhand, IndiaConference Sponsor: TEQIP-