Proceedings on Engineering Sciences

8

Authors: Bhanudas Bachchhav

A swingarm is the most crucial component of modern motorcycles use to provide suspension, hold the rear axle firmly, manage load distribution and maintain the centre of gravity. Boring is one of the most critical operation in swing arm manufacturing. The objective of this research work is to conduct a case study on process capability and its improvement for the most critical operation in swingarm. The boring operation was performed on swingarm using CNC boring machine and observations were recorded. X and R Control charts were plotted and commented on process control. The process capability indices Cp, Cpk, Cpm and Cpmk were calculated using MINITAB 19 statistical software. Among all indices, Cpmk was found to be more trustworthy with respect to the process output. Process improvement was suggested by changing the process mean towards the goal. Further analysis of such data is possible using Taguchi's loss function for quality improvement.

8

Authors: I. O. Oladele, A. O. Balogun, M. H. Adegun, O. E. Obolo, O. G. Agbabiaka, M. O. Popoola

This work aim at investigate the influence of grass-cutter hair fiber (GHF) as reinforcement in polypropylene (PP) composites. The mechanical and water absorption behaviour of the fabricated GHF/PP composites were investigated. From the result, it was observed that at low weight fraction of GHF after treatment, both the mechanical and wear properties were enhanced, which may be attributed to the removal of waxy materials from the fiber surfaces and the addition of oxygenated functional group at the surface and edges of the fibers. While the water absorption capacity of the composites was enhanced due to the presence of hierarchical micro-pores in the composites. Hence, the composites can be used as light-weight engineering materials for automobile applications.

10

Authors: David Ngwoke Mbazor

The importance of office facilities and workplace environment in the university system cannot be overemphasized because office facilities help in facilitating work schedules and increase staff's efficiency and productivity. Unfortunately, in many universities in the developing countries such as Nigeria, there are in-adequate facilities in the staff offices, and such has resulted in low productivity and has impacted negatively in universities' global ranking. The study assessed the facilities provided in the staff offices at the federal university of technology Akure Nigeria and examined the essential facilities that influence staff productivity. A total of 204 questionnaires were administered to both the academic and non-academic staff members drawn from the eight (8) academic schools that are in the university. 184 of the administered questionnaires were retrieved from the respondents representing 90.2% and therefore served as the basis for the analysis. A descriptive method of analysis was used to analyze the data. The study revealed that the conditions of fire prevention facilities such as fire extinguisher installed for workers are not functional; the same applies to the toilet facilities. Also, the further revealed that the staffs are very dissatisfied with the condition of conveniences and the state of the sofa in the offices. Finally, the study revealed that the most relevant facilities that influence staff productivity are water, electricity, and Wi-Fi. The study, therefore, recommends that the universities should make adequate provision for water, toilet, electricity, sofa, and fire extinguishers in the staff offices as these have the potential of motivating workers for greater commitment and higher productivity.

10

Authors: Elena A. Posnaya, Olga I. Ditsulenko, Margarita I. Kaznova, Diana Cheremysynova

Emerging financial crises adversely affect the activities of banking institutions, which requires additional measures of the bank aimed at allocating resources with a minimum level of risk. Developed at the legislative level mechanism of interaction between credit bureaus and bank institutions will help to avoid losses and reduce the risk of damages in the implementation of credit operations. The study proposes to resolve some issues of improving the legislative and regulatory framework on the interaction of the bank lending segment and credit bureaus. The research results can be taken into account when making changes and additions to the current legislative framework. Banking institutions need to interact with credit bureaus, which specialize in collecting and storing information about borrowers. But there are problematic aspects observed in the functioning of the credit bureaus in the Russian Federation, which are analyzed in the article. The theme direction of the study is relevant, since when issuing credit funds a banking institution should minimize the risk of default.

12

Authors: J. V. Adeshara, Hardik P. Patel, G. M. Deheric, R. M. Patel

Assuming that the surfaces of the truncated conical plates are transversely rough and considering the porous structure based on the Kozeny-Carman model, in the transverse magnetic field, the issue of the squeeze film between electrically conductive rough porous surfaces with electrically conductive lubricant is analyzed. The roughness of the surface of the bearing is dependent on a stochastic random variable with non-zero mean, variance and skewedness. After stochastically averaging the equation of Reynolds with regard to the parameter of random roughness, the pressure distribution, which in turn leads to the load carrying capacity, is solved with suitable boundary conditions. The analyses are displayed in both graphic and tabular form. It is known that the bearing roughness is transversely rough in general. Nonetheless, in the case of negative skewed roughness, the condition can be restored to some level by choosing the conductivities of the plate, if there is a negative variance. It is also found that even when there is no flow the magnetic field bearing can sustain a load.

12

Authors: Ekaterina Gribanova

The paper describes a method for solving the procurement optimization problem based on inverse calculations. The method involves solving the unconstrained optimization problem and adjusting the obtained values of arguments subject to the constraint. Compared to conventional nonlinear optimization methods, the proposed method is easier to implement with computer software, since it does not require any determination of additional variables and multiple solutions to an unconstrained optimization problem. A solution to a two-constraint problem using inverse calculations has been considered. In this case, the optimization problem is transformed into a single-constraint problem. Therefore, when constructing a system of equations for determining increments of arguments, the transformed form of the objective function and the constraint are taken into account. This paper discusses a solution to a procurement portfolio development problem for a confectionery company with a limited budget and a target value of contribution margin. The obtained solution was compared with the solution produced by the mathematical software package and the penalty method. The result of this comparison is presented in the paper. The proposed algorithm can be used in systems intended to support the procurement decision making process. The algorithm can also be used to solve quadratic programming problems of the considered form in other fields of research.