Ultrasonic Attenuation and Velocity in Steel Standard Reference Blocks
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2013, Vol 10, Issue 1
Abstract
In this paper, using two sets of reference steel blocks (area-amplitude and distance-amplitude) to investigate a modified method to verify the linearity of the system of instruments used in the ultrasonic inspection. The mechanical and physical properties of the material of the blocks before and after heat treatment are measured. The ultrasonic longitudinal and transverse velocities are measured in the blocks and the elastic parameters of the blocks are calculated. The attenuation of the ultrasonic wave at the centers of the blocks as a function of the metal distance in the distance-amplitude and the area amplitude as a function of the hole diameter for steel reference blocks with frequency 10 MHz using the immersion technique at a constant gain has been investigated. According to the experimental results, this study can significantly improve the detection accuracy of reference steel blocks, and will serve as a reference for assessing engineers.
Authors and Affiliations
M. G. S. Ali, N. Z. Elsayed, Ahmed Eid
Keywords
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