University of Thi-Qar Journal for Engineering Sciences

The Biomedical Engineering has well-developed very rapidly in recent times, and after the intervention in all areas of medicine of life and to increase the accuracy and security of medical operations, especially surgical, where he was previously relying on a doctor in a different surgeries and this was accompanied by a lot of mistakes and the length of time and lack of precision The work of the large holes in the human body and the loss of a large amount of blood and sometimes lead to death, so was the invention of surgical robot which replaces the doctor in an all surgeries provided with camera and arms of the holes for the purpose of surgery during the operation and the withdrawal of the damage to the outside of the human body as well as to the sewing section which was performed surgery on it.The surgical robot needs to study in order to avoid any error while doing any surgery being moved in all directions as well manufactured and metals used in precision manufacturing to prevent the interaction between the human body and the materials used.The surgical robot when conducting any surgery, it is exposed to Dynamic movements and to vibrations co-operation in this research study and analysis of rotational and transitional arm scalpel movements (process surgical scissors) where was derived kinetic equations transition and spin of the robot during movement, analyze and find a response to each interface and detailed in this Arm and find the natural frequencies and modes and foretelling a movement for all data and thus find, responsive to the final robot through which to draw its own curves public movements during surgical operations.By introducing the mechanical specifications and dimensional modeling Android in Ansys program by drawing the paper model and the using of Scissors force, who is the surgical operations and give the suggestions in a note to the Islamic group Ansys program as well as the moments affecting bends and shear forces for the purpose of simulation model with reality.Where they discussed outputs, data movement, distortions, and distractions in the form and after the study results are analyzed-style geometric Medical to optimize the design and to avoid any error surgeons during surgical operations Mather the accuracy of the results and this in turn gives the safety and protection of persons during the surgical procedure.

Pipe elbows are consequential parts in a piping system. When a thin-wall elbow is exposed to variable amplitude loading as internal cyclic pressure, piping elbows are vulnerable to crack at the crown. This paper presents a technique to predict the fatigue life of elbows with the application of variable amplitude loadings (VAL). For this goal, the finite element analysis technique was being used for the modeling and simulation. The fatigue life prognostication was carried out using the finite element based fatigue analysis codes. Numerical life prognostication results of three types of elbows (135o ,45o and curved ) under VAL are presented and discussed. Varying elbows shows different fatigue life behavior, the curved one gives better life. The two types of elements (Tet4 and Tet10) were investigated with optimum mesh size to get the maximum principle stress. The simulation results showed that more studies on the piping elbows necessity to be performed in order to obtain more delicate fatigue life

In this paper, a numerical investigation of a natural convection from an isothermal inclined plate immersed in air has been done. Taking into account the variation of the viscosity and thermal conductivity with temperature. The governing conservation equations of continuity, momentum and energy are non-dimensionalized by using an appropriate transformation. The non-dimensionalized equations are solved simultaneously by using a finite volume method. The effect of inclination angle with varying viscosity and thermal conductivity on the local skin friction,local Nusselt number,average skin friction and average Nusselt number has been discussed. From the results obtained the allotment of the local skin friction and the local Nusselt number on the plate vary due to angle change. The average skin friction and the average Nusselt number decrease with increase of the angle of inclination

The aim of this research is to design an intelligent traffic light control system using Field Programmable Gate Array (FPGA) technology. And Very High Speed Hardware Description Language(VHDL). A structure of four road intersection (Al-Raiyah intersection) has been selected as reference site,which is located in Al-Nasiriyah city, Iraq. This intersection interconnects Bent-Al-Huda hospital, civil defense directory, the international high-way, the police office directory, and the railway station. In addition to utilizing a regular Traffic Light Controller (TLC), multiple level of functionality such as adding a standby control signal have been considered in this design. Moreover, the motion sensor handling part, special request implementation, and loaded traffic design have been taken into consideration. Its function was verified and simulated using ModelSim.

In the hot regions the demand on electricity increased in the hot months. Gas turbine power plant is a good solution for this problem, since it has low cost, low time of installation and stable with electricity grid variation. But the power output of gas turbine is affected by the ambient temperature, the power decrease by 18% when the ambient temperature increase to 40oc. Inlet air cooling methods are used to boost the power losses in the hot days. In the present study a thermally and economically analysis was performed for Al-Rumaila gas turbine power plant located in Basrah (south of Iraq). The plant consist from five units and each unit designed to generates 296MW. The results shows that, the maximum decrease in the power developed due the increase in ambient air temperature reaches 22.97% during the month of July. The percentage of power saving due inlet air cooling increased with increasing the ambient air temperature.

This paper concentratingabout upgrades the security variable of the oil era stages, which are considered as the greatest creation improvement on the planet. Iraq had the front line of the oil era countries, which dismisses thenorthArabian Gulf, which should be authorized by the improvement of oil stages and give an examination exploration focuses remembering the deciding objective to upgrade the security of these structure. So we expect upgrading the wellbeing component of these structures through the interest by putting a complete response for the issue of waiting nerves in the joints of structures, which realized the breakdown and flooding of these stages, bringing on excessive mishaps impact particularly the national economy. In this investigation, the extra bothers of the oil stage due to the wave weights were considered. The structure of the stages was introduced to a strain, weight, and shear stretch as a result of the extra weights achieving a structure split and frustration. Constrained Element Method (FFM) and ANSYS14 Program was used as a piece of solicitation to deal with the issue delivered in foremost the aftereffects of the Random Vibration happened due to the persevering wave stacks that affected particularly on the stage structures. An Excitation Equation of the Random Vibration was speculated using Fourier Equation to learn the information limit. Have been taking a shot at the structure of the stage is really unmistakable estimations first structure stage with a compass of 25 cm were made to respond to three vectors (x, y, z) and the second with a compass of 50 cm were showing results as outlines and hence it should be seen that the structure stage with a scope of 25 cm more responsive structure of the stage with a compass of 50 cm

The main objective of this research is to investigate the properties of fresh and hardened self-compacting concrete (SCC) made from locally available materials in Basrah governorate-Iraq. The study consists of investigation the influence of volume ratio of coarse aggregate, limestone powder (LSP) to total powder ratio, and powder/water ratio. This is to obtain more information which will contribute to a better understanding to the use of local materials in production of SCC.To achieve these aims, 18 different mixes (17 SCC mixes and one normal concrete (NC) mix were prepared, tested and evaluated. It has been noticed that, with the same W/C ratio, SCC mixes prepared with higher coarse aggregate volume ratio showed higher strengths and modulus of elasticity than mixes prepared with lower coarse aggregate volume ratio. The increment of LSP as a replacement of cement leads to lower strengths and static modulus of elasticity. For the same compressive strength at 28 days, SCC showed 11%, 20% and 26.4% higher flexural, splitting tensile and bond strengths than NC respectively

A finite rectangular plate with double edge crack under uniaxial tension depends on the assumptions of Linear Elastic Fracture Mechanics LEFM and plane strain problem are studied in the present paper. The effect of crack position, crack oblique and the kinked crack orientation are investigated to predict if a crack starts to grow. These problems are solved by calculating the Stress Intensity Factor SIF for mode I (KI) and II (KII) near the crack tip theoretically using mathematical equations and numerically using finite element software ANSYS R15.A good agreement is observed between the theoretical and numerical solutions. The results show that the KI increases with increasing the relative crack length and tensile stress and these values are increased when the crack position draws near the plate edge while in case of parallel cracks the mutual shielding effect reduces KI in each crack.In mixed mode, it is shown that the maximum values of KI and KII occur at crack angle β=0o and 45o, respectively and the orientation of the kinked crack have significant effects on the KI and KII.

In this study, the evaporative cooler is developed by adding multistage of heat exchangers (air – air and water – air) to cool indirectly and indirectly the input air and then cooling directly inside the classical evaporative cooler. The multistage evaporative cooler is assisted to reduce the energy consumption, environmental pollution, global warming phenomenon and manufacturing cost compared than compression refrigeration systems. The multistage evaporative cooler is suitable and done in houses and large buildings with relatively high temperatures and humidity. The experimental results of developed evaporative cooler showed that adding cooling stage to classical cooler reduces the out dry bulb temperature about (50%) and the specific humidity by (70%)