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Ajiboye J.S.

Ajiboye J.S.


Dr. J.S. Ajiboye

 B.Eng, M.Eng,Ph.D(Ilorin.) 

 

ASSOCIATE SENIOR LECTURER

 

Area of Specialisation 

Solid Mechanics

Office Tel: + 234 (0)803 324 1473

Current Research Projects

 Experimental plasticity investigating

·         speed effect on the characterization of friction factor in bulk metal forming processes

·          Temperature effect in friction phenomenon in backward extrusion of a cylindrical specimen with diameter smaller than the container diameter

·          Double check friction factor determination using tip test and double cup extrusion.

·         Severe plastic deformation (SPD) using convectional extrusion and equal channel angular extrusion (ECAE). 


Publications

A.  JOURNAL PUBLICATIONS

  1. J. S. Ajiboye and M. B. Adeyemi [2010] “Temperature Changes with Die Profiles in Axisymmetric Forward Extrusion Process,  Advanced Materials Research Vols. 83-86, pp 165-173

  2. J. S. Ajiboye, S. A. Balogun, A. T. Agboola and G. J. Eke [2010] “Pressure and Microstructural Changes with Web to Flange ratio and Die land length in Cold Extrusion of I-shaped Lead alloy” Advanced Materials Research Vols. 83-86, pp 7-15

3.      Ajiboye, J. S [2009], “Upper Bound Analysis of Extrusion from Square Billets through Circular and Square/Rectangular dies”, Journal of Mechanical Science and Technology, vol. 23, no. 2, pp 461-474

4.      J. S. Ajiboye, Babatunde Idirisu [2009] “Microstructural Changes with Selected Extrusion Variables in Plastic Deformation of Complex-Shaped Lead alloy”,  Journal, Computer Methods in Materials Science, vol. 9 (2), pp 241 – 248.

5.      S. A. Balogun and J. S. Ajiboye [2009] “Microstructural changes with Web to Flange ratio and Die land length in Cold Extrusion of I-shaped lead alloy”, Journal of Engineering Research, Vol. 14, (3), pp 1-12

  1. J. S. Ajiboye [2008] “Three-Dimensional Upper Bound Analyses for Extrusion from Square billets through Complex Die-Openings’ Shapes”, Journal, Computer Methods in Materials Science, vol. 8 (4), pp 171-178.

7.      Ajiboye J S and Adeyemi M B [2008], “Effects of extrusion variables on temperature distribution in axisymmetric extrusion process”, International Journal of Mechanical Sciences, Vol 50 (3), pp 522 - 537.

8.      Ajiboye J S and Adeyemi M B [2007], “Upper Bound Analysis for Extrusion at Various Die Land Lengths and Shaped Profiles”, International Journal of Mechanical Sciences, Vol 49 (3), pp 335-351.

9.      J. S. Ajiboye and M. B. Adeyemi [2007] “The effect of selected parameters on  temperature distributions in axisymmetric extrusion process”, Journal of Mechanical Science and Technology, vol 21, pp 1553 – 1559.

  1. J. S. Ajiboye [2007], “Modelling of Metal Forming Friction with Experimental Verification”,  Ife Journal of Technology Vol. 16(2) 29-33.

11.    Ajiboye J S and Adeyemi M B [2006], “Effects of die land on the cold extrusion of lead alloy”, Journal of Materials Processing Technology, Vol. 171, pp 428-436.

12.   Ajiboye J S and Adeyemi M B [2006], “Upper bound analysis of die land length in cold extrusion”, Journal of Materials Processing Technology, Vol. 177, pp 608-611.

  1. Ajiboye J S and Adeyemi M B [1999], “Computer modelling of the effects of billets and extruded symmetric section shapes in forward extrusion”, Nigeria Journal of Technical Education, Vol. 16 (1), pp 1-14.

  2. Ki-Ho Jung, Hyun-Chul Lee, Joseph S. Ajiboye, Seong-Hoo Kang and Young-Taek Im [2009], “The effect of Surface Conditions on Friction by Tip Test”, accepted for publication in ASME Journal of Tribology

  3. K. H. Jung, H. C. Lee, J. S Ajiboye, and Y. T. Im [2009], “Characterization of Frictional Behavior in Cold Forging”, accepted for publication in Tribology Letter

     

B.  REFERRED CONFERENCES

1.       J. S. Ajiboye, K. H. Jung, and Y. T. Im [2009] “Sensitivity of frictional behaviour by dimensional analysis in cold forging”, The 3rd International Conference on Manufacturing, Machine Design and Tribology (ICMDT 2009), RAMADA Plaza, Jeju Island, Korea, June 25-26, pp. 70 (accepted for publication in the special volume of Journal of Mechanical Science and Technology)

2.      Young-Taek Im, Ki-Ho Jung, Hyun-Chul Lee, Joseph S. Ajiboye, Seong-Hoo Kang [2009], “Measurement of the effect of Surface Topology on Friction by Tip Test”, Proceedings of the ASME 2009 International Manufacturing Science and Engineering Conference (MSEC 2009), Oct. 4-7, West Lafayette, Indiana, U.S.A

3.      J. S. Ajiboye and M. B. Adeyemi [2008] “Temperature Changes with Die Profiles in Axisymmetric Forward Extrusion Process,  11th International Conference on Advances in Materials and Processing Technologies, Nov.2 – 5, 2008, Bahrain, Saudi Arabia, pp. 196

4.      J. S. Ajiboye, S. A. Balogun, A. T. Agboola and G. J. Eke [2008] “Pressure and Microstructural Changes with Web to Flange ratio and Die land length in Cold Extrusion of I-shaped Lead alloy” 11th International Conference on Advances in Materials and Processing Technologies, Nov.2 – 5, 2008, Bahrain, Saudi Arabia, pp.124

5.      Ajiboye J S and Adeyemi M B [2006], “Upper bound analysis of die land length in cold extrusion”, 11th International Conference of Metal Forming Processes, September 11 – 13, 2006, University of Birmingham, UK , pp. 608 – 611.

6.       J. S. Ajiboye, O. I. Ajewole and S. O. Solate [2008], “Variation of Pressure and Microstructural Changes with Web to Flange ratio and Die land length in Cold Extrusion of T-shaped section” in 8th. World Congress on Computational Mechanics (WCCM) and 5th. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS)  June 30 – July 4, Venice, Italy.

7.       J. S. Ajiboye and M. B. Adeyemi [2007] “The effect of selected parameters on       temperature distributions in axisymmetric extrusion process”, 10th International Conference on Advances in Materials and Processing Technologies, Oct. 7 – 11, 2007, Daejeon, South Korea, pp 349 – 358.

8.      Kamiyo, O. and Ajiboye, J.S [2002], “The Occupational Prestige of Engineering: Perceptions of Student Engineers in Nigeria”, 1st African Regional Conference on Engineering Education and Sub-regional Workshop on New Engineering Curriculum, Lagos, Nigeria, pp 179 – 184.

9.      Ajiboye, J.S., and Kamiyo, O [2002], “Enhancing Professionalism in Engineering through Student Work – Experience Prgramme (S.W.E.P.)”, 1st African Regional Conference on Engineering Education and Sub-regional Workshop on New Engineering Curriculum,, Lagos, Nigeria, pp 185 – 192.

10.   Kamiyo, O. and Ajiboye, J.S [2004], “Refocusing Mechanical Engineering Curriculum for specialization in Building Services Engineering”, 2nd African Regional Conference on Engineering Education, Lagos, Nigeria, pp 227 – 234.

11.    Kamiyo, O. and Ajiboye, J.S [2005], “Concurrent Engineering Practice,” National Engineering Conference of the Nigerian Society of Engineers, Kano, Nigeria, pp 259 – 265.

Recommended Links

(1) www.iacm-eccomascongress2008.org/cd/offline/pdfs/a1035.pdf

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