Abstract
The purpose of this paper is to present some experimental investigations for validate an experimental plant designed and built for study the thermal fatigue phenomenon that occurs in machines parts of internal combustion engines. Our study based under the concepts and methods used for thermal fatigue modeling under laboratory conditions presented in literature. To determine the thermal fatigue phenomenon we should know how resisting are these machine parts for being able to determine their estimated operation time by the number of operating cycles until the first cracks occur on their surface. Thermal fatigue study under laboratory conditions lead to the thermal fatigue resistance limits for different machine parts in the composition of internal combustion engines, specific to avoid cracking of the engine by optimizing the thermal regime and proposals for new materials with high resistance to thermal fatigue. The paper present the original mesurement method developed by autors under an original experimental plant. This equipment allows modeling thermal fatigue of machines parts of internal combustion engines and it is property of the laboratory of "Industrial Mechanical Equipments" of the Faculty of Engineering of Hunedoara, University "Politehnica" from Timisoara, which is the subject of a patent registered at OSIM A/00439 number of 17.06.2010, published in bopi_inv_12_2011.
Keywords thermal fatigue, field, cycles, variations, model, temperature