Abstract: The aim of this study is to investigate the effect of annealing temperature on damping capacity of the bronze 20%Sn. A simply supported beam model was used for measuring damping capacity. The damping capacity of the bronze 20%Sn by different annealing temperature was investigated. The investigation showed that the microstructure of the alloy depends on annealing treatment but there is not any phase transformation during annealing process. Different microstructure forms were followed by the variance of damping capacity of the alloys. As the result, the damping capacity increases due to the increased of annealing temperature. On the other hand, the impact strength of the materials increase but hardness of the materials decrease, when the annealing temperature increase.

Abstract: When three-axis acceleration sensor is used to vehicle state measurement, the effect of the installation error cannot be ignored. In order to eliminate the error, a calibration method based on mathematical model is proposed. Without any other auxiliary instruments, the calibration process can be completed by modeling measurement data from the fixed sensor. Experiments result proves the validity of this method, and the calibration error is less than 3%.

Abstract: In this study, two parameters of surface roughness and volumetric material removal rate are optimized based on computational intelligence method. Wire electrical discharge machine is used for machining of cold-work steel 2601. The relation between Input parameters including electrical current, pulse-off time, open-circuit voltage and gap voltage and output parameters is studied via Experimental result analysis and mathematical modeling. Subsequently, with use of variance analysis, importance and effective percentages of each parameter are studied. Outputs extracted from Non-dominated Sorting Genetic Algorithm used for optimization of output parameters resulted in optimal solutions.

Abstract: The diesel engine has been the engine of choice for heavy-duty applications in agriculture, construction, industrial, and transportation for more than 50 years. Diesel Fuel has high gas emissions such as in NOx, CO, S and opacity. In this study, In order to reduce the gas emissions-water is added into the diesel fuel. Bio Water Diesel Fuel (BWDF) is made and compared to Diesel Fuel (DF). Experiment was conduct in one hour and 17 hours engine performance. Test fuels are diesel fuel (DF) as a datum and BWDF. The results, BWDF can reduce NOx emission up to 42%, CO up to 23.7% and opacity up to 3.2%. From one to 9 hours endurance test, BWDF has no advantages in fuel consumption compared to DF. But in 11 hours of running engine, BWDF is more efficient 5% than DF. In 17 hours of running engine, BWDF is the highest efficiency up to 15.85%.

Abstract: This work describes a multifingered anthropomorphic robotic hand with fourteen Degrees of Freedom (DOF) which is able to mimic the functional motions of a biological hand especially in handling complex objects. The actuation mechanisms consisting of micro servo-motors, pulleys and belts are connected to the finger joints and thus promote bending and extending of the fingers. Two kinds of sensors, i.e. force sensor and light dependent resistor, are integrated into the system. The robotic hand can be controlled via a graphical user interface embedded with control codes or a joy stick integrated to a control board. Furthermore, the robotic hand is able to operate autonomously with the aid of sensory elements and embedded control software. Workability tests showed the capability of the system to move every finger individually and to perform grasping tasks on objects with varying sizes and geometries such as a tennis ball and a screw driver.

Abstract: Adulteration of petrol and diesel fuel with kerosene is very common in Nigeria. It increases the tailpipe emissions of harmful pollutants from vehicles. These leads to this study, which tends to show the rate of emission of CO (carbon II oxide) and PM (Particulate matters) from engines when they are run on adulterated fuel. Also the effects of adulteration on the environment and on human health were discussed and possible solutions to combat adulteration of fuel highlighted.

Abstract: In this paper, diagonal walking strategy on inclined floor is proposed. In conventional methods, bipedal robots walking on inclined floor are solved only in straight direction. When a biped walks on flat floor, the pelvis orientation is always parallel with the floor surface. However, walking on inclined floor will make the robot pelvis tilts. Furthermore, in diagonal walking direction, the robot tilts in roll and pitch directions. In this paper, the problem is solved with orientation based inverse kinematics. Roll and pitch orientations of the pelvis are calculated to realize the diagonal walking on inclined floor. Center of mass trajectory is obtained by using linear inverted pendulum mode. The proposed method is validated via simulations by using a 3-D robot computer simulator known as ROCOS.