Gabrel Mehoub, Abdarazag A. Hassan, Jamal Al mehrate (Author)
1-15
The reduction of harmful materials is became an interesting field for many researchers. In addition, the low cost of reinforced composite materials and the production of environments were the main reasons to improve the mechanical and tribological properties of thermoset composite materials, in this study a tribological test was conducted on selected materials (neat epoxy and bamboo reinforced epoxy). The adhesive wear and frictional performance of both materials are studied. The wear...
Recently more than 150 million tonnes of plastics were produced in the world. On the one hand, the consumption and production of polymers is increasing, on the other hand as landfill and incineration become more expensive and less accepted, the increasing amount of polymer wastes from them generates further mainly environmental problems. In present work catalytic cracking of waste plastics blend with heavy gas oil (HGO) was investigated using H-ZSM5and H-BETA. Reaction systems that were...
Nasser Mohammed Al-Khamri, Sami Al-Dahmani Al-Jabou, Khaled Ahmed Al-Misrati (Author)
65-71
Investment casting is considered one of the most advanced manufacturing technologies and is widely used in precision industries such as automotive components, aircraft parts, and turbine blades. This study aimed to evaluate the mechanical properties of A356 aluminum alloy after production by investment casting and subsequent heat treatment. Experimental results showed that the alloy possesses good mechanical properties and excellent fluidity, enabling complete mold filling during casting...
Mohammed Abubakr Ali Hassan, Nouri Omar Ali Alhammali (Author)
1-14
This study aims to identify the causes of the unemployment problem in the city of Al-Shati in southern Libya, and to analyze the social and psychological effects that directly affect unemployed persons. It also attempts to identify and delimit the causes of unemployment and to propose suitable solutions from the researchers’ point of view, in addition to detecting significant differences in the study population’s assessment of the psychological and social effects that are attributable to...
Power transformers are one of the most important electrical equipment that are used in power transmission systems as they perform the function of transforming the voltage levels. Hence, maintenance of power transformer is mandatory; as they are located in different geographical areas, periodical monitoring is not possible all the time due to insufficient manpower. Due to this reason transformer failure may occur which leads to exit the transformer from network unexpectedly power shutdown. To...
Tariq Khalil Ibrahim, Nasser Mohammed Al-Khamri, Hussein Ali Wahida, Khaled Ahmed Al-Misrati (Author)
72-80
This study was conducted to evaluate the efficiency of using two locally produced mineral oils after service life as quenching media in the hardening process of ASTM 1050 medium-carbon steel. The Rockwell hardness value (HRC) was used as the primary indicator for assessing hardening efficiency, and the results were compared with those obtained using new mineral oils of the same types. The findings demonstrated that the used mineral oils successfully functioned as quenching media, exhibiting...
Mahmoud Mohamed Ashour Abubakr, Hamza Abubakr Omar Ali, Nouraldin Ali Faraj Al-Dali (Author)
15-26
The international globalization of world markets for manufactured goods — especially consumer goods or consumer-related products — has placed pressures and demands on countries to improve or develop their manufacturing productivity. As technologies change or are developed, the skills required by the worker also need to be developed in order to compete successfully in the global market. Engineering and other organizations operating in the field of manufacturing must focus on and target the...
Manal A. Erteeb, Salim M. Khalil, Abdulsatar S. Kareem (Author)
29-35
We have performed a DFT calculations on pyrrole oligomers as corrosion inhibitors of iron with complete optimization of geometries using BLYP/66-31G level (d) to find a relation between the molecular structure and corrosion inhibition. The Highest Occupied Molecular Orbital (HOMO), Lowest Unoccupied Molecular Orbital (LUMO), and energy gap (∆Ε = ELUMO - EHOMO) of pyrrole oligomers (1 to10) were calculated. The interactions of these frontier molecular orbitals (HOMO and LUMO) of the pyrrole...
Ahmed Mohamed Al-Jaddal, Ahmed Al-Ajili Ali, Ali Mohamed Al-Tihami (Author)
27-38
This research addresses the cavitation phenomenon that occurs in centrifugal pumps, explaining how it occurs and the location where cavitation takes place, as well as the most important factors causing this phenomenon in centrifugal pumps and the resulting problems and risks. This was achieved through conducting laboratory experiments at the Fluid Mechanics Laboratory of the Faculty of Engineering Technology – Janzour, using a "Venturi" device whose readings simulate those of a centrifugal...
This paper proposed to analyze and experimentally study two steganographic methods: Exploiting Modification Direction (EMD) and Generalized Exploiting Modification Direction (GEMD). The implementation of these methods is explained in details such as the secret image used, data structures, and the optimal cover images number calculation. The main idea in EMD is that a separate n-pixel group of a cover image is used for embedding each next digit of (2n+1) -ary k-digit number and only one...
Ahmed Mohammed Al-Jaddal, Ahmed Al-Ajili Ahmed Ahmed, Musab Abdulmonem Shaaban Abuqba, Hussein Ali Ouhida Al-Ajili (Author)
39-56
تهدف هذه الدراسة إلى تحليل الإجهادات والتشوهات الواقعة على محور العجلة (Wheel Hub) باستخدام تقنيات النمذجة والمحاكاة الحاسوبية ضمن إطار الهندسة العكسية. تم الاعتماد على طريقة العناصر الدقيقة (Finite Element Method) وبرنامج SolidWorks Simulation لدراسة تأثير الأحمال المطبقة على النموذج ثلاثي الأبعاد للمحور. أسهم استخدام التقنيات الحاسوبية الحديثة في تقليل الجهد والوقت اللازمين للحسابات التقليدية المعقدة، كما أتاح تحديد أماكن التركيزات الإجهادية المختلفة وتقييم معامل الأمان للقطعة. أظهرت...
Mohammed Alshaibi, Ayham Ramadan, Abdulhadi Elsounousi (Author)
49-56
In this paper an EOR screening software has been appliedtochoose the best enhanced oil recovery methods and the ability of implementing this method on specific Libyan oil field in order to maximize oil recovery and field life as much as possible, this work has been done by using EORgui software, the results have been obtained and compared which concluded that the carbon dioxide flooding is the most viable options for this field. The result showed that applying CO2injection using EORgui...
Abdul Nasser Ali Al-Dahmani, Tariq Khalil Ibrahim, Fathi Omar Al-Atrash (Author)
57-64
This study was conducted on two types of plain carbon steel, C45 and C60, according to the German DIN standards. Both steels belong to the medium-carbon steel category and are suitable for hardening. The research aimed to evaluate the use of vegetable oils as quenching media in the hardening process. Heat treatment was carried out using three vegetable oils, namely corn oil, olive oil, and palm oil, and the resulting hardness was measured using the Rockwell hardness test. The results showed...
