Low frequency damage analysis of electric pylon model by fuzzy logic application

作     者：Dominik, Ireneusz Iwaniec, Marek Lech, Lukasz 

作者机构：Faculty of Mechanical Engineering and Robotics Department of Process Control AGH University of Science and Technology Krakow Poland 

出 版 物：《Journal of Low Frequency Noise Vibration and Active Control》 (J. Low Freq. Noise Vib. Act. Control)

年 卷 期：2013年第32卷第3期

页      面：239-251页

核心收录：

学科分类：0808[工学-电气工程] 080802[工学-电力系统及其自动化] 07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0824[工学-船舶与海洋工程] 0701[理学-数学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：Stiffness matrix 

摘      要：The paper presents a proposition of a new method for calculating the damage degree of electric pylon model by fuzzy logic application. Damage changes in constructions manifest themselves in small but detectable variations of frequency. The change of the speed of wave propagation, which is associated with the change of the natural frequency in the system, is caused by the deformation of the examined material. This phenomenon can be used for an indirect analysis of the construction damage. The main aim of the article is presentation of the results of the vibrations analyse of the electric pylons. In the preliminary tests the research was conducted on the simulation data of the electric pylon of power grid. Eight construction elements of pylon in different positions were chosen to simulate the damage by decreasing step by step the Young s modulus. The simulation data was obtained on the basis of the stiffness matrix updated in conjunction with the Finite Element Method. The preliminary research presented in the paper is aiming at creating the software which can monitor in real time the state of electric pylons.