This present paper presents the modeling and simulation of the thermal transfer in the transformers from the high electric voltage stations using finite element method. As the transformers are of high power and are inversed in oil, a particular interest represents the maintenance of physical and chemical parameters of oil as long a time during operation. For this, one presents the coupled analysis electromagnetic field and thermal field. The procedure

This present paper presents the modeling and simulation of the thermal transfer in the transformers from the high electric voltage stations using finite element method. As the transformers are of high power and are inversed in oil, a particular interest represents the maintenance of physical and chemical parameters of oil as long a time during operation. For this, one presents the coupled analysis electromagnetic field and thermal field. The procedure

This present paper presents the modeling and simulation of the thermal transfer in the transformers from the high electric voltage stations using finite element method. As the transformers are of high power and are inversed in oil, a particular interest represents the maintenance of physical and chemical parameters of oil as long a time during operation. For this, one presents the coupled analysis electromagnetic field and thermal field. The procedure

This present paper presents the modeling and simulation of the thermal transfer in the transformers from the high electric voltage stations using finite element method. As the transformers are of high power and are inversed in oil, a particular interest represents the maintenance of physical and chemical parameters of oil as long a time during operation. For this, one presents the coupled analysis electromagnetic field and thermal field. The procedure

This present paper presents the modeling and simulation of the thermal transfer in the transformers from the high electric voltage stations using finite element method. As the transformers are of high power and are inversed in oil, a particular interest represents the maintenance of physical and chemical parameters of oil as long a time during operation. For this, one presents the coupled analysis electromagnetic field and thermal field. The procedure

This present paper presents the modeling and simulation of the thermal transfer in the transformers from the high electric voltage stations using finite element method. As the transformers are of high power and are inversed in oil, a particular interest represents the maintenance of physical and chemical parameters of oil as long a time during operation. For this, one presents the coupled analysis electromagnetic field and thermal field. The procedure

This present paper presents the modeling and simulation of the thermal transfer in the transformers from the high electric voltage stations using finite element method. As the transformers are of high power and are inversed in oil, a particular interest represents the maintenance of physical and chemical parameters of oil as long a time during operation. For this, one presents the coupled analysis electromagnetic field and thermal field. The procedure

The paper presents a method to assess damages in beams, based on how natural frequencies of bending vibration modes change due to damages. The authors have contrived a correlation between the strain energy stored in a segment of the beam, which is proportional with the mode shape curvature of a considered vibration mode at that location, and the frequency change for this mode if damage appears on that segment. For a certain mode, damages placed on

The paper presents a method to locate discontinuities in form of transversal cracks in beams, based on vibration measurements. Patterns characterizing frequency changes of the first ten weak-axis bending vibration modes are determined for all possible locations on the structure, using a relation contrived by the authors. It base on the correlation between the strain energy stored in a segment of the beam, which is proportional with the square of

This paper proposes a vibration-based damage detection method designed for structural elements subjected to important vertical loads, as columns or pillars. The method is based on the relation existing between the energy stored in the pillar in several vibration modes and the corresponding natural frequencies. For a certain mode, this energy results as the sum of the energies stored in all pillar slices, being dependent on the rigidity and the squared