A magnetostrictive sensor for structural health monitoring in a non-ferromagnetic plate
In this work,the development of a magnetostrictive sensor for generating and detecting guided waves in a non-ferromagnetic plate is described.From the theory and experiment it can be proven that the sensor can generate non-dispersive horizontal shear(SH0)wave mode for structural health monitoring.The sensor system consists of a nickel strip,a couple of Nd-Fe-B permanent magnets,C-shaped cores,and the figure-of-eight coil wound on it.The incident wave propagates in the plate and is reflected from the plate boundaries.Since the time of the arrival can be determined from the reflected wave signal through signal processing,the velocity of the wave can be calculated.Comparing the calculated velocity with the theoretical velocity,the mode of the wave can be identified with a priori knowledge of group velocity of the plate.The sensor shows its promise in applying in SHM and nondestructive evaluation(NDE).
magnetostrictive sensor guided wave structural health monitoring plate
Yajie Yang Li Zhou Fuh-Gwo Yuan
College of Aerospace Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,Chi Department of Mechanical and Aerospace Engineering,North Carolina State University,Raleigh,NC 27695-
国际会议
The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)
重庆·南京
英文
2007-05-01（万方平台首次上网日期，不代表论文的发表时间）