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SMAT2008V30THE MODAL POWER ASPECTS OF THE VIBRATIONSOF THE AUTOMOBILES WITH HARMONIC EXCITATIONS BYBEARING RACENicolae PANDREA, Marina PANDREA, Monica BÂLDEAAbstract: Starting with the general expressions of the kinetic and potential energy in generalizedcoordinates the expression in main coordinates of the mechanical energy is deducted and then in anapplication is determined the power weight of the vibration patterns in the case of the automobile’svibrations with harmonic excitation by bearing race.Nicolae PANDREA, Universitatea din Piteşti, Facultatea de Mecanică şi TehnologieMarina PANDREA, Universitatea din Piteşti, Facultatea de Mecanică şi TehnologieMonica BÂLDEA, Universitatea din Piteşti, Facultatea de Mecanică şi Tehnologie,bldmonica@yahoo.comPOSSIBILITY OF TECHNICAL SYSTEMSSELFDIAGNOSISSMAT2008V31Florentin POPESCU, Vasile CAMPIAN, Nicolae TANEDiana C. THIERHEIMER, Walter W. THIERHEIMERAbstract: The paper addresses in a unitary manner issues regarding the diagnosis of technical products andsystems. World- and nationwide the last period of time has been marked by intensive research on aspects related todiagnosis, in most cases taking into consideration concrete practical engineering situations, allowing the establishingof links with fields like artificial intelligence, expert systems, theory of decisions, computer science, theory ofmeasurement, data acquisition technique, thus shaping a systemic approach to diagnosis. Diagnosis has emerged fromthe necessity of maintaining technical systems in a good operational state, research being driven by the achievement ofhardware structures able to rapidly localise and isolate damage (incidents) and replace the affected areas by tolerantconfigurations, as well as by developing software capable of self-reconfiguration to an operational state atdamage/failure parameters, without rendering the system inoperative. Keywords: data acquisition, artificialintelligence, diagnosis, expert systems.Florentin POPESCU, drd.eng., University of Craiova, Faculty of MechanicsVasile CAMPIAN, prof.dr.ing., Transilvania University of Brasov, Faculty of MechanicalEngineering, E-mail: campian@unitbv.ro, 0268-413000Nicolae TANE, prof.dr.ing., Transilvania University of Brasov, Faculty of Agriculture andTourism E-mail: nictan54@unitbv.ro , 0268-413000Diana C. THIERHEIMER, prof.dr.ing., Transilvania University of Brasov, Faculty ofElectrical Engineering and the Science of Computers, E-mail: boldor@vega.unitbv.ro , 0268-478705Walter W. THIERHEIMER, assoc.prof.dr.ing., Transilvania University of Brasov, Faculty ofAgriculture and Tourism, E-mail: thierheimer@unitbv.ro , 0268-41300019