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Wyszukujesz frazę "Kumar, T.S." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Synthesis and Characterization of Al-Zn-Mg alloy / Zircon Sand Reinforced Composites
    Autorzy:
    Satish Kumar, T.
    Shalini, S.
    Krishna Kumar, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/351684.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Al-Zn-Mg alloy
    microstructure
    hardness
    tensile strength
    wear
    Opis:
    Aluminium based metal matrix composite (Al-MMC’s) are much popular in the field like automobile and aerospace industries, because of its ease of fabrication process and excellent mechanical properties. In this study, Al-Zn-Mg alloy composite reinforced with 3, 6 and 9 v % of zircon sand was synthesised by stir casting technique. The microstructure of the composites revealed uniform distribution of reinforced particles. Hardness, tensile strength and wear resistance of Al-Zn-Mg alloy/zircon sand composite were found to increase with increase in v % percentage of zircon sand. Scanning Electron Microscope analysis of wear tested sample surface of composites revealed no evidence of plastic deformation of matrix phase. Particle pulls out and abrasive wear was the common feature observed from all the composites.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 2; 689-695
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and Characterization of Functionally Graded Al-6Cr-Y2O3 Composites
    Autorzy:
    Satish Kumar, T.
    Krishna Kumar, K.
    Shalini, S.
    Subramanian, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/353460.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Al-6Cr alloy
    powder metallurgy
    functionally graded materials
    wear resistance
    Opis:
    The present investigation aims at fabricating a functionally graded Al-6Cr-Y2O3 composite and its microstructural and property characterization. Al-6Cr-alloys with varying percentage of Y2O3 (5-10 vol. %) have been used to fabricate FGM by powder metallurgy route. The samples were subsequently subjected to solution treatment at 610°C for 4h followed by artificially aged at 310°C for 4h. The microstructure, hardness and wear behavior of these FGM have been evaluated. FGM exhibited superior hardness (360 ± 5 VHN) as compared to the unprocessed composites (220 ± 5 VHN) due to the uniform dispersion of Y2O3 particles. Wear resistance of Al-6Cr-10Y2O3 FGM were compared that of with pure Al-6Cr alloy by dry abrasive wear test. Al-6Cr-10Y2O3 FGM composites were found to exhibit higher wear resistance with the minimum wear rate of 0.009 mm3/m compared to the Al-6Cr alloy wear rate 0.02 mm3/m.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 4; 1649-1655
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Low-Power High-Speed Double Gate 1-bit Full Adder Cell
    Autorzy:
    Kumar, R.
    Roy, S.
    Bhunia, C. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/226653.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    low-power full-adder
    low-power CMOS design
    multiplexer based full-adder design
    multi-threshold voltage based full-adder design
    pass transmission logic
    Opis:
    In this paper, we proposed an efficient full adder circuit using 16 transistors. The proposed high-speed adder circuit is able to operate at very low voltage and maintain the proper output voltage swing and also balance the power consumption and speed. Proposed design is based on CMOS mixed threshold voltage logic (MTVL) and implemented in 180nm CMOS technology. In the proposed technique the most time-consuming and power consuming XOR gates and multiplexer are designed using MTVL scheme. The maximum average power consumed by the proposed circuit is 6.94μW at 1.8V supply voltage and frequency of 500 MHz, which is less than other conventional methods. Power, delay, and area are optimized by using pass transistor logic and verified using the SPICE simulation tool at desired broad frequency range. It is also observed that the proposed design may be successfully utilized in many cases, especially whenever the lowest power consumption and delay are aimed.
    Źródło:
    International Journal of Electronics and Telecommunications; 2016, 62, 4; 329-334
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pseudocapacitive Characteristics of Mg Doped ZnO Nanospheres Prepared by Coprecipitation
    Autorzy:
    Arul, S.
    Senthilnathan, T.
    Jeevanantham, V.
    Satheesh Kumar, K. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049144.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    zinc oxide
    Mg-doped ZnO
    coprecipitation
    cyclic voltammetry
    EiS
    Opis:
    A n-type semiconductor ZnO has high transmittance features, excellent chemical stability and electrical properties. It is also commonly used in a range of fields, such as gas sensors, photocatalysts, optoelectronics, and solar photocell. Magnesium-doped zinc oxide (Mg-ZnO) nano powders were effectively produced using a basic chemical precipitation process at 45°C. Calcined Mg-ZnO nano powders have been characterized by FTIR, XrD, SEM-EDX and Pl studies. XRD measurements from Mg-ZnO revealed development of a crystalline structure with an average particle size of 85 nm and SEM analysis confirmed the spherical morphology. Electrochemical property of produced Mg-ZnO nanoparticles was analyzed and the specific capacitance value of 729 F g-1 at 0.5 A g-1 current density was recorded and retained a specific capacitance ~100 percent at 2 A g-1 current density.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 4; 1141-1148
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Protuberance-mediated high frequency of adventitious shoot regeneration from sweetpotato leaf explants [Ipomoea batatas (L.) Lam.]
    Autorzy:
    Ashok Kumar, H.G.
    Ku, A.T.
    Agrawal, P.
    Mahesh, S.
    Yeh, K.-W.
    Powiązania:
    https://bibliotekanauki.pl/articles/80764.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    adventitious shoot
    organogenesis
    sweet potato
    Ipomoea batatas
    plant regeneration
    leaf explant
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 4
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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