US 12,216,091 B2
Phase-based approach for ultrasonic inspection
Guillaume Painchaud-April, L'Ancienne-Lorette (CA); Alain Le Duff, Quebec (CA); and Charles Brillon, Quebec (CA)
Assigned to Evident Canada, Inc., Québec (CA)
Appl. No. 17/905,107
Filed by Evident Canada, Inc., Québec (CA)
PCT Filed Feb. 25, 2021, PCT No. PCT/CA2021/050222
§ 371(c)(1), (2) Date Aug. 26, 2022,
PCT Pub. No. WO2021/168565, PCT Pub. Date Sep. 2, 2021.
Claims priority of provisional application 63/087,521, filed on Oct. 5, 2020.
Claims priority of provisional application 62/983,172, filed on Feb. 28, 2020.
Prior Publication US 2023/0127374 A1, Apr. 27, 2023
Int. Cl. G01N 29/06 (2006.01); G01N 29/07 (2006.01); G01N 29/26 (2006.01)
CPC G01N 29/262 (2013.01) [G01N 29/0654 (2013.01); G01N 29/075 (2013.01); G01N 29/0645 (2013.01); G01N 2291/044 (2013.01); G01N 2291/106 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A machine-implemented method for acoustic evaluation of a target, the method comprising:
generating respective acoustic transmission events via selected transmitting ones of a plurality of electroacoustic transducers;
in response to the respective acoustic transmission events, receiving respective acoustic echo signals from other receiving ones of the plurality of electroacoustic transducers;
single-bit quantizing the respective received acoustic echo signals to provide binarized representations; and
constructing a time-domain representation of an instantaneous phase signal from a binarized representation of at least one respective quantized acoustic echo signal using time indices of edge transitions in the binarized representation.