Fretting behaviour of galvanised steel |
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| Affiliation: | 1. Escola Superior de Tecnologia, Instituto Politécnico de Castelo Branco, Av. do Empresário, 6000 Castelo Branco, Portugal;2. Departamento de Engenharia Mecânica, Faculdade de Ciências e Tecnologia da Universidade de Coimbra, Pinhal de Marrocos, 3030 Coimbra, Portugal;1. School of Petroleum Engineering, UNSW, Kensington, NSW 2033, Australia;2. CSIRO, 11 Julius Avenue, North Ryde, NSW 2113, Australia;1. LMT, ENS-Cachan, CNRS, Université Paris Saclay, 94235 Cachan, France;2. IUT-d''Evry Val d''Essonne, Dep. SGM, 91025 Evry, France;3. ICAM–Site de Toulouse, 31076 Toulouse, France;4. Université de Toulouse, Institut Clément Ader UMR CNRS 5312, INSA/UPS/ISAE/Mines Albi, France;5. EDF R&D, EDF Lab PARIS-SACLAY, 91120 Palaiseau, France;1. Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel;2. School of Geology and Geophysics, University of Oklahoma, Norman, OK 73019, USA;1. Hildebrand Department of Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, TX, USA;2. Department of Petroleum Engineering, Texas A&M University, College Station, TX, USA |
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| Abstract: | The present work describes research conducted on the fretting behaviour of S 355 MC galvanised steel sheet. In order to study the influence of the normal load and the displacement effect, some of the specimens were galvanised by hot dipping and the rest were only polished before being tested. Fretting tests were carried out on a specially developed fretting rig prototype under ‘crossed-cylinders’ contact geometry. Tests were done during 0.72×106 cycles in laboratory air conditions. The tangential force and the displacement were measured in order to establish the fretting cycles for each fretting condition. The fretted surfaces were analysed by means of optical and scanning electron microscopes to identify the main wear mechanisms. Three different fretting regimes were identified: the stick regime; the slip regime; and the mixed stick–slip regime, which depended mainly on the influence of the normal load and the stroke. |
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