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Wyszukujesz frazę "Abdullah, Osamah" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Joining of carbon steel AISI 1006 to aluminum alloy AA6061-T6 via friction spot joining technique
Autorzy:
Ridha, Munaf Hashim
Saad, Mursal Luaibi
Abdullah, Isam Tareq
Barrak, Osamah Sabah
Hussein, Sabah Khammass
Hussein, Abbas Khammas
Powiązania:
https://bibliotekanauki.pl/articles/27312396.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
stal węglowa
tarcie
aluminium
friction spot
joining
AA6061
carbon steel AISI 1006
DOE
Opis:
This work aims to join sheets of carbon steel to aluminum alloy AA6061. A lap joint arrangement was used with a joint lap area of dimensions *25 25 mm . The joining procedure was carried out using a rotating tool of 10 mm shoulder diameter. Three process parameters, with three levels for each parameter, were selected to investigate their effects on joints quality. The parameter’s levels for each experiment were designed using the design of the experiment method (DOE). The results indicated that the two materials were joined by a mechanical interlock at an interface line, without formation of intermetallic compounds. The shear force of the joint reached an ultimate value of .4 82kN . The shear force of the joint improved by increasing plunging depth of the tool. Samples of minimum shear force value failed by a pull-outing aluminum metal from the carbon steel specimen. Samples of higher shear force value exhibited a shear mode of fracture. Increasing the rotating speed and decreasing pre-heating increased the process temperature.
Źródło:
International Journal of Applied Mechanics and Engineering; 2022, 27, 4; 1--12
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transmission of Disaster Warnings via Control Channels in Cellular Networks
Autorzy:
Aal-Nouman, Mohammed I.
Abdullah, Osamah
Salman, Omar Hussein
Al-Shaikhli, Noor Qusay A.
Powiązania:
https://bibliotekanauki.pl/articles/1839317.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
control channel
disaster reduction
early warning message
mobile network
Opis:
According to United Nations reports, natural disasters caused, worldwide, approximately 100,000 deaths and affected 175 million people each year between 2004 and 2013. To reduce those numbers, countries around the globe have made specific arrangements enabling them to warn the population about imminent disasters, in order to evacuate the area in due time. But providing such warnings in areas where no Internet access is available poses a great challenge. In this paper, we proposed a method to transmit early warning messages via UMTS cellular networks, while relying on spare extensions of control channels (FACH). The results obtained are validate based on their comparison with theoretical considerations and are also benchmarked against the 3GPP standard. The results show that messages may be sent faster than with the use of the 3GPP standard.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 4; 53-61
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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