None

A model-based study of transmit-receive longitudinal arrays for inspection of subsurface defects

Authors: Ehsan Mohseni (University of Strathclyde) , Charles Macleod (University of Strathclyde) , Yahsar Javadi (University of Strathclyde) , Zhen Qiu (University of Strathclyde) , Randika Vithanage (University of Strathclyde) , David Lines (University of Strathclyde) , Rastislav Zimermann (University of Strathclyde) , Gareth Pierce (University of Strathclyde) , Anthony Gachagan (University of Strathclyde)

  • A model-based study of transmit-receive longitudinal arrays for inspection of subsurface defects

    None

    A model-based study of transmit-receive longitudinal arrays for inspection of subsurface defects

    Authors: , , , , , , , ,

Abstract

Dual matrix transmit-receive longitudinal arrays have been shown to have an improved signal to noise ratio in near field zone which makes them the most suitable array configuration for inspection of near surface defects. This study aims to compare the performance of different configurations for transmit-receive longitudinal matrix arrays. For this purpose, 4 matrix configurations of 2×32, 4×16, 4×32, and 8×16 elements are investigated using CIVA modelling. The array operating frequencies investigated are either 5 MHz or 10 MHz. Different natural focal depths for these TRL arrays are considered in the model. For each configuration, the ability to steer and skew the beam is examined through CIVA modelling of the inspection of flat bottom holes extended to a few millimeters under the surface. It is found that the focusing for near surface areas is more efficient using the 4×16 and 8×16 elements configurations.

How to Cite:

Mohseni, E. ., Macleod, C. ., Javadi, Y. ., Qiu, Z. ., Vithanage, R. ., Lines, D. ., Zimermann, R. ., Pierce, G. . & Gachagan, A. ., (2019) “A model-based study of transmit-receive longitudinal arrays for inspection of subsurface defects”, Review of Progress in Quantitative Nondestructive Evaluation .

Downloads:
Download PDF

104 Views

101 Downloads

Published on
03 Dec 2019
Peer Reviewed
License