Title :
Numerical and experimental studies of flaw response in inhomogeneous material
Author :
Zheng, Gang-feng ; Wu, Bin ; He, Cun-fu
Author_Institution :
Dept. of Mater. Sci. & Eng., Anhui Univ. of Sci. & Technol., Huainan, China
Abstract :
The objective of this paper is to predict the flaw response in an inhomogeneous solid medium. 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 analysed 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. At the same time, the experimental results are also given about different mean diameter of the grains on the received voltage.
Keywords :
cracks; flaw detection; inclusions; inhomogeneous media; ultrasonic absorption; ultrasonics; voids (solid); flaw response; grain scattering; inhomogeneous solid medium; multiGaussian beam model; phase velocity dispersion; ultrasonic attenuation; ultrasonic beam; Anisotropic magnetoresistance; Approximation methods; Educational institutions; Material properties; Materials science and technology; Scattering; Solid modeling; Testing; Ultrasonic transducers; Voltage; Elastodynamics; Multi Gaussian Beam; NDE; born approximation; ultrasonic scattering;
Conference_Titel :
Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) and 2009 China Symposium on Frequency Control Technology, Joint Conference of the 2009 Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4950-7
DOI :
10.1109/SPAWDA.2009.5428952
