Skip to main content

Investigation of longitudinal angle beam ultrasonic testing with a circular array probe

Buy Article:

$25.00 plus tax (Refund Policy)

Abstract:

The three-dimensional ultrasonic phased array technique with a circular array probe was investigated for application to longitudinal angle beam ultrasonic testing in all directions for inspection of a thick material. Conventional 2D array probes have ultrasonic transducer elements of a similar size, whereas a circular array probe has ultrasonic transducer elements that increase in size at positions away from the centre of the array. It is shown that, for a fixed number of total elements on the array, it is possible for a circular array probe to generate a much larger aperture than conventional 2D array probes, allowing them to focus much deeper inside the component. However, the increasing size of the outer elements of a circular array can give rise to increased noise. A technique was proposed to reduce noise by limiting the active elements on the outside of a circular array probe to those elements whose pitch projected in the direction of propagation and were small enough not to generate the grating lobe. This technique has two main advantages compared to conventional phased array techniques: a larger inspection range is possible and noise caused by the grating lobe is decreased.

Keywords: 2D ARRAY PROBES; 3D ULTRASONIC PHASED ARRAY TECHNIQUE; ANGLE BEAM ULTRASONIC TESTING; CIRCULAR ARRAY PROBE

Document Type: Research Article

DOI: https://doi.org/10.1784/insi.2012.54.11.619

Publication date: 2012-11-01

More about this publication?
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more