Numerical Calculation on Flaw Response in Inhomogeneous Media
Ultrasonic methods are used in a wide variety of applications including medical studies, geological mapping, and nondestructive evaluation (NDE) tests. In the field of ultrasonic NDE, it is necessary to treat inverse problems of various types. The objective of this paper is to predict the flaw response in an inhomogeneous solid medium. A mathematical modelling of the testing situation is very valuable for a number of reasons. The modelling helps in developing physical intuition and in the interpretation of tests. Multi-Gaussian Beam (MGB) model is used to represent the incident ultrasonic beam. The effect of ultrasonic attenuation and phase velocity dispersion due to grain scattering is included in the predictions. The variation of received voltage is analyzed against the distance of the flaw from the transducer for different dimensions of a square cylinder void. The effect of variation of mean diameter of the grains on the received voltage for different domain of interest is also studied.
NDE Multi Gaussian Beam Born approximation Ultrasonic scattering
Gangfeng Zheng Bin Wu Cunfu He
College of Materials Science and Engineering, Anhui University of Science and Technology,Huainan 232 College of Mechanical Engineering & Applied Electronics Technology, Beijing University of Technology
国际会议
2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)
广州
英文
1188-1193
2011-11-18（万方平台首次上网日期，不代表论文的发表时间）