World Journal of Engineering Research and Technology (WJERT) has indexed with various reputed international bodies like : Google Scholar , Index Copernicus , Indian Science Publications , SOCOLAR, China , International Institute of Organized Research (I2OR) , Cosmos Impact Factor , Research Bible, Fuchu, Tokyo. JAPAN , Scientific Indexing Services (SIS) , Jour Informatics (Under Process) , UDLedge Science Citation Index , International Impact Factor Services , International Scientific Indexing, UAE , International Society for Research Activity (ISRA) Journal Impact Factor (JIF) , International Innovative Journal Impact Factor (IIJIF) , Science Library Index, Dubai, United Arab Emirates , Scientific Journal Impact Factor (SJIF) , Science Library Index, Dubai, United Arab Emirates , Eurasian Scientific Journal Index (ESJI) , Global Impact Factor (0.342) , IFSIJ Measure of Journal Quality , Web of Science Group (Under Process) , Directory of Research Journals Indexing , Scholar Article Journal Index (SAJI) , International Scientific Indexing ( ISI ) , Scope Database , Academia , 

World Journal of Engineering
Research and Technology

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Engineering Research and Technology

ISSN 2454-695X

Impact Factor : 7.029

ICV : 79.45

News & Updation

  • Article Invited for Publication

    Article are invited for publication in WJERT Coming Issue

  • ICV

    WJERT Rank with Index Copernicus Value 79.45 due to high reputation at International Level

  • New Issue Published

    Its Our pleasure to inform you that, WJERT March 2024 Issue has been Published, Kindly check it on

  • WJERT New Impact Factor

    WJERT Impact Factor has been Increased to 7.029 for Year 2024.


    March 2024 Issue has been successfully launched on 1 March 2024.




Olawale Kazeem Babalola*, Bello Gambo Bichi and Basheer Garba Fagge


Lubricants are commonly used to reduce friction and wear from the sliding and metal contact surfaces, so as to allow the smooth movement of parts in each other, the calls for green ecology and legislations to protect environment and replace the mineral oil with bio-lubricant oils necessitated for this study. It is essential to find out alternative oil for the replacement of mineral oil based lubricants and vegetable oil already meets the requirements. Vegetable oils based bio- lubricants are non-toxic, biodegradable, and renewable and have a good lubricating performance than mineral oil based lubricant. The present study evaluates the tribological properties of Castor (C) and Neem (N) oil and their blends and this was compared to the conventional mineral oil. The friction and wear characteristics of the formulated oils were investigated by using four ball tribo tester according to ASTM D4172 method. 60N+40C showed higher viscosity and viscosity index compared to other formulated lubricants and it is better for boundary lubrication. Physico-chemical analysis showed that 100N oil exhibited high saponification value of (194.69MgKOH/g) which confirms its good quality for lubricant production, as compared to 100C oil of 179.23MgKOH/g. In thermal stability analysis, it was found that 60N+40C remains thermally stable than other formulated oils and 60N+40C showed a lower amount of coefficient of friction and wear scar diameter compared to other formulated oils and conventional mineral oil. Therefore the 60N+40C formulated oil from Castor and Neem oil has the potential of replacing the conventional mineral oil for industrial applications.

[Full Text Article] [Download Certificate]