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  • Study of effects of Heat treatment on the Hardness and Microstructure of Welded Low Carbon Steel Pipes | Mudashiru | Innovative Systems Design and Engineering
    Home Vol 4 No 9 2013 Mudashiru Study of effects of Heat treatment on the Hardness and Microstructure of Welded Low Carbon Steel Pipes L O Mudashiru T A Adio Abstract This paper reports investigations made on the effects of annealing heat treatment on the micro structural and mechanical property behavior of 0 078wt C steel weld Welding operation was carried out on the low carbon steel of 0 078wt carbon content in pair followed by heat treating annealing the specimen was heat treated at the weld zone to a temperature of 850 C using digital heat treatment furnace For effective study of the effect of annealing on the welded joint mechanical test hardness was carried out and micrographs were obtained to reveal the microstructures of the heat treated annealed and un heat treated samples From the micro structural analysis the micrographs shows that the heat treated sample had a more predominant pearlite structure which is the reason larger areas of the structure is darker and less ferrite structure due to recrystallization and carbon diffusion hence a significant improvement in ductility toughness and grain refinement accompanied with decrease in hardness and brittleness Keywords Annealing Ductility Hardness Heat treatment Microstructure Welding

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6252 (2016-05-01)
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  • Study of effects of Heat treatment on the Hardness and Microstructure of Welded Low Carbon Steel Pipes | Mudashiru | Innovative Systems Design and Engineering
    load here if your Web browser has a PDF reader plug in installed for example a recent version of Adobe Acrobat Reader Alternatively you can also download the PDF file directly to your computer from where it can be opened using a PDF reader To download the PDF click the Download link below If you would like more information about how to print save and work with PDFs Highwire Press

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6252/6381 (2016-05-01)
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  • Numerical Analysis of Dynamic Viscosity Effect Associated with a Continuously Moving Heated Horizontal plate | Adekojo | Innovative Systems Design and Engineering
    of varying dynamic viscosity coupled with viscous energy dissipation function on the convective heat transfer in a fluid filled rectangular cavity The cavity was filled with fluids as quenching media The flow governing equations including the momentum and energy equations were solved using the finite difference method The study was carried out for different fluids such as oil with Prandtl number Pr 10 air with Prandtl number Pr 0 7 and liquid metal with Prandtl number Pr 0 01 for various dynamic viscosity parameters in the range 5 10 1 9 10 1 and heat capacity in the range 1 Cp 10 in order to characterize the nature of the flow patterns and energy distribution The results revealed that the dynamic viscosity has significant influence on the velocity and temperature profiles for a particular specific heat capacity and Prandtl number higher than unity at fixed viscous dissipation Further results show that an increase in the dynamic viscosity for a Prandtl number greater than unity leads to a significant decrease in the maximum velocity attainable in the cavity It was concluded that the dynamic viscosity and specific heat capacity have significance influence on energy distribution and the rate of heat transfer

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6253 (2016-05-01)
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  • Numerical Analysis of Dynamic Viscosity Effect Associated with a Continuously Moving Heated Horizontal plate | Adekojo | Innovative Systems Design and Engineering
    load here if your Web browser has a PDF reader plug in installed for example a recent version of Adobe Acrobat Reader Alternatively you can also download the PDF file directly to your computer from where it can be opened using a PDF reader To download the PDF click the Download link below If you would like more information about how to print save and work with PDFs Highwire Press

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6253/6382 (2016-05-01)
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  • Particle Counts and Size Distributions in Local Garri Processing Environment | L. A. | Innovative Systems Design and Engineering
    particles resulting from anthropogenic sources Fine particles particles 2 5 µm are known to have harmful effects on human health and environment compared to the coarse particles 2 5 µm d p 10 µm Sadly developing countries experiencing rapid growth are characterized with inadequate environmental action and policy Garri processing has been linked to contribute to ambient particulate matter pollution The present study investigates the number and sizes of particulate emitted as a result of this anthropogenic activity Continuous measurement of number concentration and size distributions of particles of diameters 0 3 µm 0 5 µm 1 0 µm 2 0 µm and 5 0 µm were conducted using a GT 321 particle counter for day and night cases November 2012 at four major local garri processing locations in the ancient city of Oyo Nigeria On the average the total particle number concentration for the selected four locations were 2 3 10 6 8 9 10 6 0 085 10 6 4 487 10 6 0 073 10 6 0 912 10 6 0 022 10 6 0 654 10 6 and 0 002 10 6 0 155 10 6 for particle size 0 3µm 0 5 µm 1 0 µm 2 0 µm and 5 0 µm respectively for day time readings and 1 021 10 6 8 793 10 6 0 071 10 6 3 323 10 6 0 051 10 6 1 903 10 6 0 012 10 6 0 278 10 6 and 0 003 10 6 0 015 10 6 for particle size 0 3µm 0 5 µm 1 0 µm 2 0 µm and 5 0 µm respectively for night time measurements Daily cycle of particle numbers were obvious with high concentrations recorded during day time but lower level at night time which is

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6254 (2016-05-01)
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  • Particle Counts and Size Distributions in Local Garri Processing Environment | L. A. | Innovative Systems Design and Engineering
    should load here if your Web browser has a PDF reader plug in installed for example a recent version of Adobe Acrobat Reader Alternatively you can also download the PDF file directly to your computer from where it can be opened using a PDF reader To download the PDF click the Download link below If you would like more information about how to print save and work with PDFs Highwire

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6254/6383 (2016-05-01)
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  • Production and Storage of Cassava Chips for Reconversion into Gari | A. | Innovative Systems Design and Engineering
    Abstract Cassava chips 7 moisture level produced from cassava root IITA 94 0561 was stored for 6 months in high density polyethylene bag Stored chips were coarse milled rehydrated to 62 51 and seeded with fresh cassava mash FCM at levels of 5 10 and 20 The resulting mash was fermented for 72 hr with pH monitored every 24 hr and processed to gari Yield and swelling capacity of gari were determined Sensory evaluation was carried out on water soaked gari and gari paste eba While least values for pH was obtained in FCM throughout the fermentation period there was reduction in values in all samples with increase in fermentation time from 30 01 to 33 40 Yield of gari from the seeded chips ranged from 64 4 72 3 while that of FCM was 18 7 Swelling capacity of gari ranged from 2 0 3 0 in FCM and that seeded with 20 FCM respectively Sensory evaluation result revealed that gari produced from cassava chips seeded at 10 level is adequate for making eba while that seeded at 5 level is adequate for consumption as soaked gari p 0 05 Use of stored cassava chips with 10 FCM for

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6255 (2016-05-01)
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  • Production and Storage of Cassava Chips for Reconversion into Gari | A. | Innovative Systems Design and Engineering
    load here if your Web browser has a PDF reader plug in installed for example a recent version of Adobe Acrobat Reader Alternatively you can also download the PDF file directly to your computer from where it can be opened using a PDF reader To download the PDF click the Download link below If you would like more information about how to print save and work with PDFs Highwire Press

    Original URL path: http://www.iiste.org/Journals/index.php/ISDE/article/view/6255/6386 (2016-05-01)
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