RESUMO
The Nigerian government has promoted industrial development based on the area of policy implementation. The development of policy and the use of bamboo in the construction company is very significant because of the role of bamboo cultivation in reducing environmental pollution. Bamboo, in its existence, applies to the environment in absorbing carbon dioxide of about 35% and releases to the environment a high amount of oxygen. This carbon dioxide absorbs by bamboo reduces the ozone layer depletion in the aspect of climate change. Another significance of bamboo is that it creates an environment that reduces the light intensity to protect against ultraviolet emissions. The use of Bamboo is considerable in the construction industry and also as useful reinforcement material. This research discusses the effects of policy issues relating to the use of bamboo in the construction industry in Nigeria. And also, study the significance of bamboo implementation in terms of bamboo used for biomass as a source for bio-energy, furniture, and building development. Also, how bamboo cultivation will affect economic growth in Nigeria. This study also discusses the three policy dimensions as it pertains to implementing bamboo policy in Nigeria and suggested ways of developing bamboo policy for proper regulations.
RESUMO
The material selection process for producing a horizontal axis wind turbine blade for sustainable energy generation is a vital issue when using Nigeria as a case study. Due to the challenge faced with the low wind speed variations. However, this paper focuses on implementing MCDM for the material selection process for a suitable material for developing a horizontal wind turbine blade. This paper used a quantitative research approach using AHP and TOPSIS multi-criteria decision method. The study put into consideration the environmental conditions for the material selection process when designing the questionnaire. The authors extracted the data used for the selection process from the 130 research questionnaire distributed to materials engineers and renewable energy professionals. This research considered four alternatives that is, aluminum alloy, stainless steel, glass fiber, and mild steel to determine the best material for the wind turbine blade. Also, the model has four criteria and eight sub-criteria used for developing the pair-wise matrix and the performance score used for the ranking process of the alternatives. The result shows that a consistency index of 0.056 and a consistency ratio of 0.062 gotten via the AHP method is workable for material selection practice. 78%, 43%, 67%, and 25% are the performance scores for the four alternatives via the TOPSIS techniques. In conclusion, aluminum alloy is the best material, followed by glass fibre. Therefore, the decision-makers recommended aluminum alloy; hence, manufacturers should apply aluminum alloy to develop the wind turbine blade for sustainable energy generation.
RESUMO
In this investigation, the dataset presented will give important information to understand the area of cutting tool wear during turning operations, tool nature is the most difficult tasks in manufacturing process, particularly in the locomotive industry. With the view to optimize the cutting parameters, the tests were carried out to investigate tool wear on high speed steel (HSS) during turning operation of aluminium 1061 alloy and to developed mathematical models using least squares method. The cutting parameters chosen for this investigation are cutting speed, feed rate, and radial depth of cut were used as input parameters in order to predict tool wear. The experiment was designed by using full factorial 33 in which 27 samples were run in a Fanuc 0i TC CNC lathe. After each test, scanning electron microscope (SEM) is used to measure the cutting tool in other to determine the tool wear.
