The Effect of Speed on Coefficient of Friction in African Plum Oil (<em>Dacryodes Edulis</em>) Lubricant
Keywords:Friction coefficient, rotational speed, plum oil, lubrication, pin-on-disk tribometer.
One of the major factors influencing the variation of friction between surfaces in contact is the speed; we are faced here with the problem of determining the optimum speed between surfaces in contact in order to improve on the mechanical properties and performance of the entire system. This project investigates experimentally the effect of rotational speed on the (CoF) between aluminum disk test samples in contact with stainless steel pin using plum oil as a lubricant under thin film lubrication conditions. We first extracted plum oil using the manual pressing method and then carried out friction tests on a pin-on-disk tribometer as per ASTM-G 99 standards at room temperature. Rotational speeds between 500rpm and 3000rpm and normal loads of 10N and 20N were deployed as the operating variables and the variation of the (CoF) at predefined rotational speeds and normal loads was studied. Working time for each test was 20 minutes and each test was run twice and average value of friction force calculated. It was observed the CoF decreases with increasing rotational speed from 500rpm-1500rpm speed range and increases with increasing rotational speed from 1500rpm-2500rpm speed range while there is a slight drop from 2500rpm-3000rpm and an optimum speed range attained between 1250rpm-1500rpm where we experienced the least value of coefficient of friction for this specific material combination and test conditions. To further investigate other factors that affect the coefficient of friction and the validity of these results, more studies are needed.
Chowdhury M. A., M. K. Khalil, D. M. Nuruzzaman, M. L. Rahaman. (2011), “The Effect of Sliding Speed and Normal Load on Friction and Wear Property of Aluminum”, International Journal of Mechanical & Mechatronics Engineering IJMME-IJENS Vol: 11 No: 01.
Chowdhury M.A., Nuruzzaman, D.M., Roy, B.K., Dey, P.K., Mostafa, M.G., Islam, M.S. and Mia, Md. R. (2013), “Experimental investigation on friction and wear of stainless steel 304 sliding against different pin materials”, World Applied Science Journal, Vol.22, No.12, pp.1702-1710.
Nikos Kournetas, (2003) “Impact of artificial ageing process on the wear resistance of dental materials”. National and Kapodistrian University of Athens.
Riyadh A. Al-Samarai, Haftirman, Khairel Rafezi Ahmad, Y. Al-Douri, (2012) “Effect of Load and Sliding Speed on Wear and Friction of Aluminum– Silicon Casting Alloy”. International Journal of Scientific and Research Publications, Volume 2, Issue 3, ISSN 2250-3153
Liew, W.Y.H; Dayou S, ; Dayou J, ; Siambun, N.J. & Ismail, M.A.B. (2014). The effectiveness of palm oil methyl ester as lubricant additive in milling and four-ball tests. Int J Surf Sci Eng 8: pp. 153–172
Philippe Vergne (2018). Static and Dynamic Compressibility of Lubricants under High Pressures, Research Gate, Conference Paper in Tribology and Interface Engineering Series · September 1994 DOI: 10.1016/S0167-8922(08)70629-` 1, Retrieved from: https://www.researchgate.net/publication/238501424
Sliney, H.E. (1978): Dynamics of solid Lubrication as observed by optical microscopy, ASLE Trans, Vol 21 (No. 2), pp. 109 – 117.
Sukirno, R. F. Bismo, S. & Nasikin, M. (2009). Bio grease based on palm oil and lithium soap thickener: Evaluation of antiwear property. World Appl. Sci. J., 3, pp. 401–407
Ponnekanti, N. & Prashant, K. (2015). Eco-Friendly Multipurpose Lubricating Greases from Vegetable Residual Oils, 628-636; doi: 10.3390/lubricants3040628, ISSN 2075-4442, retrieved from: www.mdpi.com/journal/lubricants
Asaah, E.K.., Tchoundjeu, Z., Wanduku, T.N. et al. understanding structural roots system of 5 year old African plum tree (D.edulis) of seed and vegetable origins (G.Don) H.J lam. Trees, 24,789-796 (2010)
IA Ajayi, RA Oderinde. Studies on the oil characteristics of Dacryodes edulis pulp and seed .discovery and innovations 14(1), 20-24, 2002
Z Tchoundjeu, J Kengue, RRB Leakey. Domestication of Dacryodes edulis: state of art , forest, trees and livelihoods 12(1-2),3-13 2002
KADJI Beugre,Romuald Leonce,KONE Frankroma martial ,Sika andree and DABONNE Soumaila. Physic-chemical properties of safou (Dacryodes edulis) fruits growth in cote d’ivoire/ journal of applied biosciences 105:10103-10110, (2016)
Liew, W.Y.H; Dayou S, ; Dayou J, ; Siambun, N.J. & Ismail, M.A.B. (2014). The effectiveness of palm oil methyl ester as lubricant additive in milling and four-ball tests. Int J Surf Sci Eng 8: pp. 153172
Ponnekanti, N. & Prashant, K. (2015). Eco-Friendly Multipurpose Lubricating Greases from Vegetable Residual Oils, 628-636; doi: 10.3390/lubricants3040628, ISSN 2075-4442, Retrieved from: www.mdpi.com/journal/lubricants
Ashwani Kumar & Satyawati Sharma (2008). An evaluation of multipurpose oil seed crop for industrial uses (Jatropha curcas L.): A review, ELSEVIER, INDCRO-5087; pp. 1-10, Retrieved from: www.sciencedirect.com
Quinchia, L.A., Delgaddo, M.A., Reddyhoff, T., Gallegos, C & Spikes, H.A. (2014). Tribological Study of Potential Vegetable Oil-Based Lubricants Containing Environmentally Friendly Viscosity Modifiers, Tribology Journal, 69, pp. 110-117, Retrieved from: http://www.sciencedirect.com/science/article/pii/S0301679x13002971
Sharma, B.K; Adhvaryu, A. & Erhan, S.Z. (2009). Friction and wear behavior of thioether hydroxyl vegetable oil. Wear 42: pp. 353358
Wahlstrom J., Y. Lyu, V. Matejka, A. Soderberg, (2017) “Contact pressure and sliding velocity maps of the friction, wear and emission from a low-metallic/cast-iron disc brake contact pair”, Tribol. Ind. 39 (4) 460–470, https://doi.org/10.24874/ti.2017.39.04.05.
Zhang H., J.S. Lee, J.W. Fash, (2016) “Compositional effects of the brake friction material on creep groan phenomena”. Wear 251(1–12)1477–1483, https://doi.org/10.1016/S0043-1648(01)00786-4.
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