Phased Array 2D - Calculating Delays

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Model Description

Ultrasonic phased array testing is a powerful non-destructive testing (NDT) technology and one whose use is growing rapidly. Phased arrays pulse and receive from multiple elements, they are pulsed in a way that causes the waves produced from each element combines to form a single wave front that is propagating in a desired direction. The example presented in this article will demonstrate how to set up a phased array model, calculate and apply the delay laws necessary to steer and focus the beam. The focusing is dependent on the circular test piece placed in the water load if this location is changed the delay laws will change accordingly.

Parametric Variables

The model allows the following design variables to be adjusted to control design metrics, such as the transmitting element number:

Parametric Variable

Description

Default Value

pill_thk

Thickness of the element

77 μm

freqint

Input drive signal frequency

20 MHz

narelem

Number of array elements

8

ntx

Transmitting element number

1

Outputs

Here are a list of the types of outputs to expect from this model:

  • Time Histories (XY Graphs)
    • Drive input signal
    • Acoustic pressure 
  • Maximum acoustic pressure data array
  • Extrapolation output file 
    • Directivity plots 

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Runtime Statistics

Model size

100619 elements

Solve Time

8 minutes (4 CPU)

Core Hours

0.538

Memory Usage

60 MB

Recommended CPU Configuration

4 CPU

 

Files

The following input files are required to run this model, click here to download the input files:

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