BibTex format
@inproceedings{Duxbury:2011,
author = {Duxbury, D and Lowe, M and Russell, J},
title = {Effects of variation in phased array element performance},
year = {2011}
}
RIS format (EndNote, RefMan)
TY - CPAPER
AB - When phased array probes are used for ultrasonic inspection it is necessary to ensure that consistent performance is achieved. If Full Matrix Capture (FMC) is used to record inspection data the most appropriate way of doing this is to assess transducer performance on an element by element basis rather than assess a specific beam.The rationale for this approach is that any beam can be synthetically produced from FMC data, so it is not logical to couple probe calibration with a particular beam. This paper presents a model based study that aims to place specifications on element performance. The effect of element sensitivity, phase, and non-functioning elements has been investigated using an array beam model, based on Huygen's principle, to carry out Monte Carlo simulations. This has revealed that the dominant result of variations in element performance is the introduction of beam artefacts, such as the creation of side lobes. Results will be presented from simulations of a number of beam types at several centre frequencies that show that focused beams are more resistant to artefacts than plane beams, and the effect of element phase is dependant on probe bandwidth. General guidelines for acceptable variations between elements will also be presented. © (2011) by the British Institute of Non-Destructive Testing. All rights reserved.
AU - Duxbury,D
AU - Lowe,M
AU - Russell,J
PY - 2011///
TI - Effects of variation in phased array element performance
ER -