Abdul Talib Din

Promoting Sustainability through Water Hydraulic Technology – The Effect of Water Hydraulic in Industrial Scissor Lift

Sustainability concern has brought the idea of exploring the possibility of using water as the hydraulic medium to transfer energy. The abundant resource of water, and its characteristic involving hygiene, safety and low maintenance cost provides a fascinating perspective of choosing water over hydraulic oil, due to concerns over oil disposal, contamination, costly maintenance and flammability. However, in contrast, its low boiling temperature, low viscosity, and simple molecular structure could pose danger to the operation of the hydraulic system. In order to identify these limitations, an experimental study is carried out to explore the effect of water hydraulic system. A test rig of scissor lift is fabricated and put into test by replacing the hydraulic oil with reverse osmosis water. It is found that the water hydraulic scissor lift managed to lift up to 400 kg of load, with workable water temperature of 41.4°C.

Influence of Heat Treatment on Impact, Hardness and Fatigue Strength of 6061 Aluminium Alloy

This paper presents effects of heat treatment on toughness, hardness and fatigue strength of aluminum alloy 6061. The alloy specimens were heat treated in the furnace at different temperature levels and holding times; and then cooled in different media (water and oil). The mechanical properties such as hardness, impact and fatigue were examined using standard method. Result shows that mechanical properties of aluminum alloy can be improved by the heat treatment. It was found that through ageing processes at temperature 160 °C for one, three and five hours, decreased the hardness, while increased the toughness. The fatigue strength was decreased when the number of cycles increased. The fracture surfaces between specimens have a different appearance before and after heat treatment.

An Innovative Method of Harnessing Hydraulic Energy for Mini Cost-Saving Water Treatment Plant Using Hydraulic Turbine: A Mathematical Approach towards Design and Analysis

River pollution has been a well-known worldwide issue and the impacts of polluted rivers are greatly affecting the health well-being of people worldwide. Meanwhile water treatment plants (WTP) have increasing energy cost. However, an abundance of hydraulic energy is stored in the flowing river water. The hydraulic energy can be harvested to be converted into mechanical energy to operate the WTP. This paper is focused on explaining an efficient and green method to harvest hydraulic energy to reduce the energy cost incurred by the usage of motorized equipment in conventional WTP. This product has dual purpose with dual benefit of restoring the quality of river water quality as well as harvesting readily available hydraulic energy to reduce energy cost.

Harnessing Buoyancy Force to Operate Mini Cost-Saving Water Treatment Plant for River Inlets

River pollution has been a global issue and the consequences of polluted rivers are significantly affecting human health and well-being. Meanwhile, water treatment plants (WTP) are often related to high energy cost. Nevertheless, there is an abundance of hydraulic energy stored in the flowing water, which can be converted into mechanical energy to operate the WTP. The focus of this paper is to describe an innovative method of harnessing buoyancy force to save the energy cost of commonly used motorized equipment in the conventional WTP. The benefit of this product is to create a green environment by utilizing a readily available hydraulic energy and restoring river water quality. This study has shown that a cost-saving water treatment plant operating based on buoyancy force is feasible. This product enables electricity cost to be minimized while treating river water at the same time.

A numerical analysis on double acting pneumatic telescopic cylinder motion characteristics

This paper presents the design and development of a mathematical model of dynamic motion of pneumatic telescopic cylinder. The aim of the research is to develop a telescopic pneumatic system that can handle variable load at constant forward and retracting speed. The design analysis carried out is focused and based mainly on identifying the characteristics of the pneumatic cylinder using force-feedback control system. A conceptual model was made and the limitations were identified and further studied on nonlinear behavior and the solutions to improve its characteristics were sought in the process of designing and developing the telescopic cylinder. The control system contained combination of proportional and on-off valve in controlling the telescopic cylinder movement. The determination of the displacement of each stage of the telescopic cylinder, velocity and acceleration were optimized using multi-order PI controller. Method of research is performed by simulation studies using Matlab Simulink to prove the dynamic mathematical modeling of the cylinder. During the last stage of the research, a scale down model of the telescopic cylinder was fabricated incorporating all design aspects derived from the theoretical and simulation analysis. After that an experimental study was conducted on the scale down cylinder in order to validate the data obtained. The validated data shall be used in the design of the full scale of the telescopic cylinder. It is found that from the numerical analysis, the designed system can achieve a constant speed although loaded with varied axial force.