Open Access Case study

Parametric Analysis of Autopilot Intelligent Robot (PIR) Using Multiple Surface Gradient Path MSGP

Olanrewaju E. Abikoye, Abdullateef O. Alabi, O. Olaboye Yinusa

Journal of Engineering Research and Reports, Page 7-22
DOI: 10.9734/jerr/2020/v19i417237

Robotic application is taking new dimensions around the globe, of which numerous problems are solved with embedded systems, this research introduces gradient vertices method from 3D geometric to perform data capturing using kinematic effect with aid of autopilot Intelligent Robotic (PIR). The research considered Multiple Surface Gradient Path MSGP using Toyota Camry 200x chases model using DC motor Pulse Wide Modulation (PMW). The discretion only Multiple Surface Gradients, distance values and angular pivots with respect to time. The PIR hardware “Raspberry Pi 3B” as the target board is interface with modular peripherals, using python programming language. Auto pilot is archived using different surface gradients and the digital images obtained during experience are stored for further analysis.  The use of Tkinter GUI improved user experience in the extermination of the periodic oscillation, gradient values, proximate distance obtained by the PIR Final implementation. The deployment is completed by improvising a prototype model (PIR) suitable for Toyota Camry 200x. It is important to view it in the context of a larger community policing framework. PIR can be classified as intermission robot that can be used for different activities with the available feature kinematic system which make it relevant for multi-purpose activities.

Open Access Original Research Article

Optimization for Die Attach Film Delamination on Nickel-Palladium-Gold Die Pad

Michael D. Capili

Journal of Engineering Research and Reports, Page 1-6
DOI: 10.9734/jerr/2020/v19i417236

In the Semiconductor Industry, the delamination performance of integrated circuit packaging is being aggressively improved. However, this task is complicated and difficult, as the defective failure is highly dependent on the compatibility of the material characteristics that may affect the entire Integrated Circuit package system under certain stress levels, both mechanical and thermal. This research work aims to study Die Attach process optimization in DAF adhesive for Nickel-Palladium-Gold Die Pad leadframe to achieve maximum reliability performance under IPC / JEDEC Moisture Sensitivity Level 1 (MSL1) at 260°C reflow. Strategic optimization of the Die Attach process is needed to ensure robust reliability. And one of the solutions is to apply the Scrubbing method, which is a machine feature used at a constant temperature to aid in the wetting of adhesives and the removal of voids.

Open Access Original Research Article

Specialized EMI Shielding Process for Semiconductor Package

Rennier S. Rodriguez, Frederick Ray I. Gomez

Journal of Engineering Research and Reports, Page 23-26
DOI: 10.9734/jerr/2020/v19i417238

Electromagnetic interference (EMI) is an unwanted disturbance caused by external sources that would affect the electrical functionality of the device. This paper presents an advanced approach of electromagnetic interference (EMI) shielding protection for sensitive and critical semiconductor packages. The process employed half-cutting method to apply the EMI coating on the upper-half portion of the device, protecting the Silicon die and internal components from external EMI disturbance. Eventually, the enhanced EMI shielding process would provide advantages of improved quality and eliminate risks of possible assembly issues while providing the main purpose of EMI protection for semiconductor devices. For future studies, the technique could be applied on packages with similar requirement. Prototypes are helpful to validate the effectiveness of the enhanced process.

Open Access Original Research Article

Study of Adsorption Performance of Biochar for Heavy Metals Removal

Rehab Hefny, M. M. Ibrahim, Dalia Morad

Journal of Engineering Research and Reports, Page 27-40
DOI: 10.9734/jerr/2020/v19i417239

The main objective of this work is to evaluate the performance of four different types of biochars in removing heavy metals from synthetic solution. Four types of biochars are investigated in this study, namely; jazaurin, ficus, orange, and mango biochars. A pilot plant is set up to investigate the efficiency of these biochars as a filter media for synthetic solution treatment. The removal efficiency of different heavy metals is assessed by a four-column pilot plant under different parameters; mean particle size of biochars, initial metal concentration, hydraulic load, and time. Results indicate that the different types of biochars used in this study show high performance in removing the different types of heavy metals utilized (Copper (Cu), Cadmium (Cd), Lead (Pb), and Zinc(Zn)). The removal efficiencies of these heavy metals are more than 99% for all types of biochar. It is concluded that using biochars as a filter media could be an effective solution for removing heavy metals from industrial wastewater in the environmental conditions of Egypt.

Open Access Original Research Article

Dimensional Analysis of Transmissivity Equations and Comparison of Dependent Variables Using Birnin Gwari Aquifer Characteristics in Northern Nigeria

Isaac O. Olaniyan

Journal of Engineering Research and Reports, Page 41-50
DOI: 10.9734/jerr/2020/v19i417240

This study established relationship among three transmissivity equations using dimensional analysis, comparing three dependent variables inherent in the transmissivity equations, and use correlation analysis to examine the nature of interrelationship between drawdown and specific capacity in the Birnin-Gwari local government area of Kaduna State, Nigeria between October 2018 and October 2019. Relationship between three transmissivity equations, namely, Jacob, Logan and Babuskin was determined using dimensional analysis. The equations and the outcome were applied to the hydraulic data obtained from 26 producing boreholes in the study area. Comparison of the dependent variables, namely discharge, drawdown and hydraulic conductivity, was carried out to observe the relationship among them. The Correlation analysis was used to examine the nature of interrelationship between drawdown and specific capacity, while the plots of depth-to-water table and depth-to-basement were made to provide pictorial comparison between positions of water table and the underlying Basement. The results showed that the values computed from the Jacob method are the lowest among the three, while Logan method gave higher values, although they all trend in similar manner. The study revealed an inverse trend in the drawdown versus discharge and hydraulic conductivity. Correlation analysis between drawdown and specific capacity gave a regression coefficient of -0.593 and correlation coefficient of 0.352, indicating a weak relationship between them. The graphical relation of water level versus basement rock surfaces portend a near-parallel trend possibly determined by the underlying geology. Transmissivity values computed from the Babuskin method gave almost average values among the three methods. Both the regression and correlation coefficients gave low to average values between drawdown and specific capacity. The depth-to-basement versus depth-to-water plots showed that water table variations are probably controlled by the type and trend of basement topography.