Fascicula VIII http://arthra.ugal.ro/handle/20.500.14043/25237 The Annals of University "Dunarea de Jos" of Galati. Fascicle VIII: Tribology 2026-04-06T05:57:10Z Calculul și construcția schimbătoarelor de căldură frigorifice http://arthra.ugal.ro/handle/20.500.14043/27959 Calculul și construcția schimbătoarelor de căldură frigorifice Iosifescu, Cristian Constantin 2018-01-01T00:00:00Z Bending of Thin Walled Pipes Using the Heat Realised by Friction http://arthra.ugal.ro/handle/20.500.14043/25247 Bending of Thin Walled Pipes Using the Heat Realised by Friction Tadic, Branko; Marjanovic, Nenad; Nedic, Bogdan This paper considers appliance of heat generated by friction to relieve deformation of light metals, having as example of bending thin walled copper pipes. Based on numerous, primarily experiment analysis the conclusions have been applied for designing a machine for bending of thin walled copper pipes having small bend radius. The machine’s design is relatively simple, but it provides realisation of needed temperatures within required narrow area. Large number of tests has shown the reliability of suggested methodology. THE ANNALS OF UNIVERSITY “DUNĂREA DE JOS “ OF GALAŢI FASCICLE VIII, XII, 2006, ISSN 1221-4590 TRIBOLOGY 2006-01-01T00:00:00Z Overview on the Implementation of Tree Test Methods for Conformity Assessment of Fluids http://arthra.ugal.ro/handle/20.500.14043/25248 Overview on the Implementation of Tree Test Methods for Conformity Assessment of Fluids Rîpă, Minodora; Deleanu, Lorena; Chiculiță, Simona This paper presents three test methods for conformity assessment of technical fluids, all included in international, European and Romanian standards and their relevance for work security and health. THE ANNALS OF UNIVERSITY “DUNĂREA DE JOS “ OF GALAŢI FASCICLE VIII, 2006, ISSN 1221-4590 TRIBOLOGY 2006-01-01T00:00:00Z Research on Surface Roughness by Laser Cut http://arthra.ugal.ro/handle/20.500.14043/25280 Research on Surface Roughness by Laser Cut Radovanovic, Miroslav; Dašić, Predrag Laser cutting is one of the most industrial applications. Laser cutting with oxygen is used primarily for cutting of mild and low-alloyed steels. Cut surface quality is a very important characteristic of laser cutting that ensures an advantage on other contour cutting processes. This paper gives results of the experimental research referring to the determination of surface indicators obtained by laser cutting. The relationships between roughness parameters are given by linear and exponential equations. THE ANNALS OF UNIVERSITY “DUNĂREA DE JOS “ OF GALAŢI FASCICLE VIII, 2006 (XII), ISSN 1221-4590 TRIBOLOGY 2006-01-01T00:00:00Z