Acoustic model acoustic region of influence generation

1. A method for conducting an ultrasonic-based inspection, the method comprising:

receiving, by one or more processors, a plurality of scan plan parameters associated with generating an image of at least one flaw within a specimen based on acoustic echo data;

applying the plurality of scan plan parameters to an acoustic model, the acoustic model configured to determine a two-way pressure response of a plurality of inspection modes based on specular reflection and diffraction phenomena;

generating, by the acoustic model based on the plurality of scan plan parameters, an acoustic region of influence (AROI) comprising an acoustic amplitude sensitivity map for a first inspection mode amongst the plurality of inspection modes; and

generating, for display, a first image comprising the AROI associated with the first inspection mode for capturing or inspecting the image of the at least one flaw.

2. The method of claim 1 , wherein the acoustic echo data is obtained using full matrix capture (FMC) or phased array inspection, and wherein the plurality of scan plan parameters comprises at least one of:

a type of the flaw;

a spatial extent of the flaw;

a size of a reflector;

a geometry of the reflector;

an orientation of the reflector;

a specimen material;

an acoustic velocity within the specimen;

a specimen thickness;

a weld description comprising a weld bevel angle;

a probe frequency;

a count of elements;

a pitch of acoustic transducer elements;

geometry of acoustic transducer elements;

an acoustic transducer assembly wedge angle;

an acoustic transducer assembly wedge material; or

an acoustic transducer assembly wedge geometry; and

wherein the plurality of inspection modes comprises at least one of pulse echo mode, double-skip mode, or self-tandem mode.

3. The method of claim 1 , wherein the acoustic model is based on an adaptation of Fourier optics to acoustic values, wherein the acoustic model produces an amplitude map suitable for predicted amplitude compensation, wherein the AROI differs based on directional and non-directional flaw scatterers, wherein the non-directional flaw scatterers include at least one of slag or porosity in a weld being inspected, and wherein the directional flaw scatterers include at least one of a lack of fusion in the weld being inspected or a crack in the specimen.

4. The method of claim 1 , further comprising:

adjusting at least one of the plurality of scan plan parameters based on the generated image; and

performing an inspection of the specimen based on the adjusted plurality of scan plan parameters.

5. The method of claim 4 , further comprising:

generating, by the acoustic model based on the adjusted plurality of scan plan parameters, another AROI comprising another acoustic amplitude sensitivity map for the first inspection mode; and

generating, for display, a second image comprising the another AROI prior to performing the inspection.

6. The method of claim 1 , further comprising:

selecting a second inspection mode of the plurality of inspection modes; and

generating, by the acoustic model based on the plurality of scan plan parameters, another AROI comprising another acoustic amplitude sensitivity map for the second inspection mode; and

generating, for display, a second image comprising the another AROI prior to performing an inspection of the specimen.

7. The method of claim 1 , wherein the acoustic model generates the AROI based on wave propagation information in transmission and reception comprising a transmission coefficient, a reflection coefficient, a geometric beam spread and an acoustic attenuation corresponding to a material of the specimen, wherein the propagation information is generated using paraxial Fourier optics, wherein the acoustic model computes a change in path of an acoustic beam as the beam crosses the specimen and computes a change in amplitude of the acoustic beam using plane-wave transmission/reflection coefficients, and wherein the acoustic model generates the AROI further based on flaw scattering information comprising diffraction or specular reflection-like responses.

8. The method of claim 1 , further comprising determining an area within the scan plan indicative of enhanced sensitivity.

9. The method of claim 1 , further comprising comparing outputs of the acoustic model for at least one of: different scan plan parameters or different inspection modes.

10. The method of claim 1 , wherein the first image represents a flat bottom hole flaw or a side-drilled hole flaw.

11. The method of claim 1 , further comprising:

performing an inspection of the specimen based on the plurality of scan plan parameters using a portable instrument; and

displaying the first image on the portable instrument before, during or after performing the inspection.

12. The method of claim 11 , further comprising adjusting at least one parameter amongst the plurality of scan plan parameters, based on the displayed first image, while performing the inspection.

13. The method of claim 1 , wherein the AROI is generated based on at least one of a flaw characteristic or a reflector characteristic, and the plurality of scan plan parameters.

14. The method of claim 1 , further comprising:

generating an inspection image based on performing an inspection of the specimen according to the plurality of scan plan parameters; and

comparing the inspection image with the first image that is generated for display.

15. The method of claim 1 , wherein the image of at least one flaw is generated using a Total Focusing Method (TFM), further comprising:

automatically adjusting at least one parameter amongst the plurality of scan plan parameters of the TFM based on the AROI by solving an optimization problem.

16. The method of claim 15 , further comprising:

accessing a database that associates a plurality of weld flaws with an expected position in the specimen of each of the plurality of weld flaws;

determining a given weld flaw of the plurality of weld flaws based on one or more parameters of the plurality of scan plan parameters; and

processing the expected position associated with the given weld flaw using the acoustic model to recommend, for each of the plurality of inspection modes, at least one of a probe and wedge selection, a probe placement, or acoustic parameters.

17. The method of claim 1 , further comprising:

receiving an inspection image based on performing an inspection of the specimen according to the plurality of scan plan parameters; and

adjusting amplitude compensation in the inspection image based on the AROI, wherein the ARM provides an adjustment map for adjusting the inspection image.

18. The method of claim 1 , further comprising:

retrieving an amplitude threshold;

generating a first multi-mode image by removing portions of the first image that have intensity amplitudes that fall below the amplitude threshold;

generating, by the acoustic model based on the plurality of scan plan parameters, another acoustic region of influence (AROI) comprising another acoustic amplitude sensitivity map for a second inspection mode amongst the plurality of inspection modes;

generating, for display, a second image comprising the AROI associated with the second inspection mode;

generating a second multi-mode image by removing portions of the second image that have intensity amplitudes that fall below the amplitude threshold; and

combining the first multi-mode image and the second multi-mode image into a composite multi-mode image, wherein the first multi-mode image is visually distinguished from the second multi-mode image in the composite multi-mode image.

19. The method of claim 18 , further comprising normalizing intensity amplitudes of the first multi-mode image and the second multi-mode image before combining the first multi-mode image and the second multi-mode into the composite multi-mode image.

20. The method of claim 18 , further comprising repeating the generating of a multi-mode image operation and the combining for one or more additional images comprising the AROI associated with one or more additional respective inspection modes.

21. A system for conducting an ultrasonic-based inspection, the system comprising:

one or more processors configured to perform operations comprising:

receiving a plurality of scan plan parameters associated with generating an image of at least one flaw within a specimen based on acoustic echo data obtained using full matrix capture (FMC);

applying the plurality of scan plan parameters to an acoustic model, the acoustic model configured to determine a two-way pressure response of a plurality of inspection modes based on specular reflection and diffraction phenomena;

generating, by the acoustic model based on the plurality of scan plan parameters, an acoustic region of influence (AROI) comprising an acoustic amplitude sensitivity map for a first inspection mode amongst the plurality of inspection modes; and

generating, for display, a first image comprising the AROI associated with the first inspection mode for capturing or inspecting the image of the at least one flaw.

22. A non-transitory computer-readable medium comprising non-transitory computer-readable instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:

receiving a plurality of scan plan parameters associated with generating an image of at least one flaw within a specimen based on acoustic echo data obtained using full matrix capture (FMC);

applying the plurality of scan plan parameters to an acoustic model, the acoustic model configured to determine a two-way pressure response of a plurality of inspection modes based on specular reflection and diffraction phenomena;

generating, by the acoustic model based on the plurality of scan plan parameters, an acoustic region of influence (AROI) comprising an acoustic amplitude sensitivity map for a first inspection mode amongst the plurality of inspection modes; and

generating, for display, a first image comprising the AROI associated with the first inspection mode for capturing or inspecting the image of the at least one flaw.