An apparent increase in the detectability of certain flaws results when the ultrasonic inspection beam was oriented off the longitudinal axis of railroad rail. Here, artificial reflectors were used to better define the extent of material “seen” by inspection beams, and determine how surface curvature might affect the inspection. Presumably, such information could be useful for suggesting optimum positioning of linear array probes in testing, and help determine the validity of simulation models of this inspection for various cases.
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D. Utrata (2003) studied this question.
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