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Assessment of Automobile Engines Rebuilt at Local Artisan Workshops in Ghana Prince Yaw Andoh; Godwin Kafui Ayetor; Godwin Kafui Ayetor; Kofi Owura Amoabeng; Michael Nii Sackey Sackey
Journal of Applied Engineering and Technological Science (JAETS) Vol. 3 No. 2 (2022): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.583 KB) | DOI: 10.37385/jaets.v3i2.314

Abstract

The manufacturing industry of Ghana, as promising as it is, has many shaping to be done. This specifically goes to the automobile manufacturers and engine rebuilders of Ghana. Though agile and very skillful in rebuilding engines many have reported grievances on their service renders to them. This shows that, the knowledge and zeal to rebuild it puts the industry at a certain level but needs further additional and requisite tuning to reach the pinnacle. For this reason, the researcher therefore sought to investigate how cylinder bores and piston ring end-gap contribute to the failure of locally rebuilt engines. A descriptive design was used for the study and sample of 60 participants responded to the structured questionnaire. The study used primary data to provide reliable and up-to-date information the researcher needs for the analysis. The data were entered in SPSS with analysis performed using inferential and descriptive analysis methods. The findings of the study revealed that errors made in the work procedure had a stronger effect on the clients’ than its other counterpart. Practically, the flaws in the work procedure of rebuilding cylinder bore significantly affects clients’ satisfaction.
Development of Composite Material for Wind Turbine Blades Prince Yaw Andoh; Anthony Agyei-Agyemang; Peter Oppong Tawiah; Charles Kofi Kafui Sekyere; Charles McCarthy Asante
Journal of Applied Engineering and Technological Science (JAETS) Vol. 2 No. 2 (2021): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (590.23 KB) | DOI: 10.37385/jaets.v2i2.211

Abstract

Rapid increases in the prices of conventional turbine blade making materials as well as future sustainability issues is attracting research interest in the development of polymer composites for turbine blade applications. This study examines the suitability of using a novel bamboo fibre and recycled plastics composite developed for wind turbine blade application. Bamboo fibre was extracted from raw bamboo by chemical and mechanical processes. Recycled High Density Polyethylene (HDPE) was collected, cut into pieces, cleaned and combined with extracted bamboo fibre to form the composite. The percentage ratio of fibre content in the ten specimens ranged from 2.5% to 25%. A series of mechanical tests were conducted on the specimens, including tensile test, impact test, water absorption test and sun radiation test. Results established that as the percentage of bamboo fibre in the specimen increased, the tensile strength and impact energy also increased. Water absorption and sun radiation tests conducted on specimen X revealed no meaningful impact its mechanical properties. Hence, the most significant deduction from this study is that the specimen with 25% bamboo fibre and 75% HDPE matrix possesses the quality that qualifies it to be used as a material for wind turbine blade fabrication.
Fabrication and Testing of a Low-Cost Wind Turbine Blade using Bamboo Reinforced Recycled Plastic Prince Yaw Andoh; Charles Kofi Kafui Sekyere; Godwin Kafui Ayetor; Michael Nii Sackey
Journal of Applied Engineering and Technological Science (JAETS) Vol. 2 No. 2 (2021): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (597.08 KB) | DOI: 10.37385/jaets.v2i2.212

Abstract

Wind energy, as a sustainable energy option is gaining research attention due to its price competitiveness relative to conventional energy sources. This study presents the fabrication and testing of a low-cost wind turbine blade using bamboo fibre with recycled plastic. Bamboo fibre was extracted from raw bamboo and combined with adequately conditioned Recycled High-Density Polyethylene (RHDPE) to form a composite which is 25% bamboo fibre and 75% RHDPE. The composite materials was then used to fabricate a turbine blade which was tested and the results compared with typical performance indices for a turbine blade made of fibre glass for comparative analysis. The turbine blades were installed at a height of 10 meters at the test site and monitored. Results showed the energy per unit cost (kWh) for the composite material was lower than that of the glass fibre with a life cycle of 107 for glass fibre and 106 cycles for the bamboo plastic. Stress and deformation analysis showed a higher value for glass fiber compared with the composite material. It can be deduced that composite material matrix possesses the desired properties and energy per unit cost ratio for consideration in building wind turbine blades.
The Potential of Sawdust and Coconut Fiber as Sound Reduction Materials Joseph Nyumutsu; Anthony Agyei-Agyemang; Prince Yaw Andoh; Peter Oppong Tawiah; Benjamin Atribawuni Asaaga
Journal of Applied Engineering and Technological Science (JAETS) Vol. 4 No. 2 (2023): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v4i2.624

Abstract

In this study, biodegradable materials that could be utilized to reduce noise were examined. Sound absorption test was conducted with an impedance tube. Sawdust, coconut fiber, and expansive clay were used to create test samples. Noise reduction coefficient results for sawdust and expansive clay mixture ranged from 0.24 to 0.62. A mixture of coconut fiber and expansive clay recorded in noise reduction coefficient between 0.31 and 0.58. Coconut fiber mixed with expansive clay recorded noise reduction coefficient ranging from 0.31 to 0.58. The study findings suggests that these materials have good acoustic properties and can therefore be used as alternative noise reduction materials. These findings have important implications in reducing environmental pollution if adopted in the development of noise reducing materials.