US 12,276,637 B2
Nondestructive methods and systems for detecting and/or characterizing damage
Morad Behandish, San Mateo, CA (US)
Assigned to Palo Alto Research Center Incorporated, Palo Alto, CA (US)
Filed by Palo Alto Research Center Incorporated, Palo Alto, CA (US)
Filed on Aug. 12, 2022, as Appl. No. 17/819,515.
Prior Publication US 2024/0053303 A1, Feb. 15, 2024
Int. Cl. G01N 29/44 (2006.01); G01N 29/04 (2006.01)
CPC G01N 29/4472 (2013.01) [G01N 29/041 (2013.01); G01N 29/4481 (2013.01); G01N 2291/02818 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method comprising:
exposing, via a surface acoustic wave (SAW) wedge transducer or an ultrasonic transducer, a material sample having different material granularities to one or more nondestructive stimuli;
measuring, via a laser device, a response of the material sample to the one or more nondestructive stimuli; and
analyzing the measurement of the response with a scale-aware single- or multi-physics model to identify anomalies in the measurement as compared to an expected response of the material sample to the one or more nondestructive stimuli, wherein:
the scale-aware single- or multi-physics model is based on at least one of a specific length scale or a specific time scale; and
the scale-aware single- or multi-physics model comprises governing equations comprising scale-agnostic first principles and scale-aware phenomenological laws that must hold over any finite or infinitesimal regions in a space or a time, and the scale-aware phenomenological laws are single- or multi-physics constitutive or interaction laws that must be learned from data at the at least one of the specific length scale or the specific time scale.