Items where Author is "Umer, J"

Article

Umer, J, Morris, N, Rahmani, R, Balakrishnan, S and Rahnejat, Homer ORCID: 0000-0003-2257-7102 (2020) Nanoscale frictional characterisation of base and fully formulated lubricants based on activation energy components. Tribology International, 144 (106115). ISSN 0301-679X

Umer, J, Morris, N, Leighton, M, Rahmani, R, Howell-Smith, SJ, Wild, R and Rahnejat, Homer ORCID: 0000-0003-2257-7102 (2018) Asperity level tribological investigation of automotive bore material and coatings. Tribology International, 117 . pp. 131-140. ISSN 0301-679X

Conference or Workshop Item

Umer, J, Morris, N, Rahmani, R, Rahnejat, Homer ORCID: 0000-0003-2257-7102 and Balakrishnan, S (2018) Interaction of dispersants with anti-wear and friction modifiers in contacts representative of piston-ring liner interface Abstract. In: 3rd International Brazilian Conference on Tribology – TriBoBR 2018, 3/12/2018 - 5/12/2018, Florianópolis, Brazil.

Umer, J, Leighton, M, Morris, N, Rahmani, R, Rahnejat, Homer ORCID: 0000-0003-2257-7102 and Balakrishnan, S (2018) Tribological investigation of organic and inorganic friction modifiers with varying quantities of dispersants. In: 45th Leeds-Lyon Symposium on Tribology - Smart Tribology Systems, 4-7 September 2018, University of Leeds.

Umer, J, Morris, N, Leighton, M, Rahmani, R, Howell-Smith, SJ and Rahnejat, Homer ORCID: 0000-0003-2257-7102 (2018) Characterisation of automotive bore material and coatings using atomic force microscopy. In: TriboUK2018, 12/4/2018 - 13/4/2018, University of Sheffield.

Martinez-Insua-Rodriguez, A, Rahnejat, Homer ORCID: 0000-0003-2257-7102, Smith, MB, Rahmani, R, Morris, N, Umer, J and Howell-Smith, SJ (2018) Study of the lubricant-surface system for in-cylinder applications Abstract. In: TriboUK2016, 14-15 April 2016, University of Leeds.

Umer, J, Morris, N, Leighton, M, Rahmani, R, Rahnejat, Homer ORCID: 0000-0003-2257-7102, Howell-Smith, SJ and Balakrishnan, S (2017) Nano-scale investigation of frictional characteristics of tribo-films in sliding contacts of representative in-cylinder conditions. In: 6th World Tribology Congress 2017, 17/09/17 - 22/09/17, Beijing, China.

Umer, J, Rahnejat, Homer ORCID: 0000-0003-2257-7102, Rahmani, R, King, P, Martinez-Insua-Rodriguez, A and Morris, N (2016) Lubricant-surface system mitigating in-cylinder friction. In: TriboUK 2016, 14/4/16-15/4/16, University of Leeds.