3-dimensional forward ultrasonic models for aerospace applications
Abstract
The development and use of forward sensing models in NDE applications is becoming more common as computer hardware and software advances have occurred within the past decade. In this effort, the development of 3-dimensional sensing models is of interest, where the time-evolving nature of ultrasonic waves propagating within complex material systems is being studied for polycrystalline aerospace applications. Previous research has shown the value of utilizing computational tools and forward ultrasonic models in the understanding of damage scattering processes and material heterogeneity effects on the propagating waves, but in most instances the ultrasonic models have been limited to 2-dimensional studies or small 3-dimensional volumes and idealized pressure wave studies. In the present effort, an advanced 3-dimensional ultrasound sensing model is reported that includes a piezoelectric transducer wedge configuration, and a synthetic nickel polycrystalline substrate material system. The numerical model results showed evidence of grain-induced surface acoustic wave diffraction streaming and lobing effects, which are similar to previously reported experimental results involving wavefield imaging measurements in polycrystalline nickel materials.
- Publication:
-
45th Annual Review of Progress in Quantitative Nondestructive Evaluation, Volume 38
- Pub Date:
- May 2019
- DOI:
- 10.1063/1.5099855
- Bibcode:
- 2019AIPC.2102m0005B