Application of Ultrasonic Guided Waves Testing Method in Coiled Springs
In this paper,application of defect detection by ultrasonic guided waves in springs has been studied in three aspects,which are theoretical calculation, simulation modeling and experiments.For the springs structure is helix and it can not be directly described easily,less work has been done on theoretical calculation of elastic wave propagation in the springs.The elastic wave equation of the spiral structure is established and calculated numerically here,considering the theoretical calculation helps to quantitative analyze the law of elastic wave propagation in the springs.Then guided waves dispersion relations corresponding is achieved.The experimental results of spring field testing agree well with the theoretical calculations and simulations,indicating the effectiveness of ultrasonic guided waves inspection in springs.
F. J. Zhou et al., "Application of Ultrasonic Guided Waves Testing Method in Coiled Springs", Applied Mechanics and Materials, Vol. 127, pp. 449-454, 2012