Adapting the full matrix capture and the total focusing method to laser ultrasonics for remote non destructive testing

Stratoudaki, Theodosia and Clark, Matt and Wilcox, Paul D.; (2017) Adapting the full matrix capture and the total focusing method to laser ultrasonics for remote non destructive testing. In: IEEE International Ultrasonics Symposium (IUS) 2017. IEEE, USA. (https://doi.org/10.1109/ULTSYM.2017.8092900)

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Abstract

Laser Induced Phased Arrays (LIPAs) use post processing to focus and steer the laser generated and detected ultrasonic beam, synthesizing a phased array. The technique is broadband, non-contact, and couplant free, making LIPAs suitable for large stand-off distances, inspection of components of complex geometries and hazardous environments. This paper presents LIPAs synthesized by capturing the Full Matrix (FMC), at the nondestructive, thermoelastic regime. The Total Focusing Method (TFM) is used as the imaging algorithm, where the captured signals are summed with the appropriate time delay, in order to synthesize a focus at every point in the imaging area. The FMC and the TFM, are adapted to the needs of LIPAs in order to enable fast imaging and make more efficient use of the information in the data. Experimental results are presented from nondestructive, laser ultrasonic inspection of an aluminum sample with side drilled holes at depths varying between 10 and 20 mm from the surface.

ORCID iDs

Stratoudaki, Theodosia ORCID logoORCID: https://orcid.org/0000-0002-7462-8664, Clark, Matt and Wilcox, Paul D.;
  • Item type:Book Section
    ID code:62440
    Dates:
    Date
    Event
    6 September 2017
    Published
    1 June 2017
    Accepted
    Notes:(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:27 Nov 2017 14:29
    Last modified:16 Nov 2024 01:31
    URI:https://strathprints.strath.ac.uk/id/eprint/62440
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