Three-dimensional Ultrasonic Ray Tracing in Multi-Layered Structures

  • Carmelo Mineo (Speaker)
  • Donatella Cerniglia (Speaker)
  • Lines, D. (Speaker)

Activity: Talk or presentation typesOral presentation


Ultrasonic testing has been used for many decades, proving itself very effective for detecting defects in many industrial sectors. The advent of powerful electronics and software has been increasingly pushing the applicability of ultrasonic waves to perform challenging inspections. General ray tracing models, suitable for calculating the proper incident angle of single-element ultrasonic probes and the proper time delay of phased array probes, are currently required. They can support the development of new imaging techniques, as Full Matrix Capture and Total Focusing Method. This paper introduces a generalized iterative method for the computation of ultrasonic ray paths, when ultrasonic source and target are separated by multiple complex material interfaces in the two dimensional and three dimensional domains. The manuscript starts with a review of the well-known bisection method, and extends the applicability of the method to cases with increasing complexity. An application example shows that the introduced generalized bisection method can enable the computation of optimum incidence angles and focal delays for accurate ultrasonic focusing. A Matlab-based implementation of the method is used to present and discuss the performance of the introduced approach.
Period1 Nov 20215 Nov 2021
Event titleASME 2021 International Mechanical Engineering Congress and Exposition
Event typeConference
LocationUnited StatesShow on map
Degree of RecognitionInternational


  • Ultrasonic wave propagation
  • Ray tracing
  • Mathematical modelling
  • Bisection method
  • Multi-layered structures
  • Weld inspection
  • Composites