公开(公告)号：US09927404B2

公开(公告)日：2018-03-27

申请号：US14761151

申请日：2013-12-16

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Wenji Peng ,  Jeffrey A Umbach ,  Kevin D Smith

IPC: G01N29/26 ,  G01N29/06

CPC classification number: G01N29/262 ,  G01N29/0645 ,  G01N2291/0234 ,  G01N2291/044 ,  G01N2291/106 ,  G01N2291/2634 ,  G01N2291/2694

Abstract: A computer-implemented method for evaluating echo signals obtained from a phased array experiment on a billet is disclosed. The computer-implemented method may comprise collecting the echo signals from a pulser/receiver unit, correlating the echo signals with a position on a longitudinal axis and a circumferential angle of the billet, computing an amplitude for each of the echo signals, displaying the amplitudes as indications in a c-scan data plot at a computer display unit, and determining the signal-to-noise ratios of indications located in a region-of-interest box relative to noise in surrounding boxes in the c-scan data plot. The computer-implemented method may further comprise classifying each indication as rejectable, reportable, or insignificant based on its amplitude and signal-to-noise ratio. The computer-implemented method may find applications in quality control evaluations in the aircraft industry.