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  • Anthony Gachagan

Advanced defect detection algorithm using clustering in ultrasonic NDE

Gongzhang, R. & Gachagan, A., 10 Feb 2016, In : AIP Conference Proceedings. 1706, 9 p., 180009.

Research output: Contribution to journalConference Contribution

Open Access
File
1 Citation (Scopus)
43 Downloads (Pure)

A feasability study on guided wave-based robotic mapping

Tabatabaeipour, M., Trushkevych, O., Dobie, G., Edwards, R. S., Dixon, S., MacLeod, C., Gachagan, A. & Pierce, S. G., 6 Oct 2019. 4 p.

Research output: Contribution to conferencePaper

Open Access
File
28 Downloads (Pure)

Airborne broad-beam emitter from a capacitive transducer and a cylindrical structure

Guarato, F., Barduchi de Lima, G., Windmill, J. F. C. & Gachagan, A., 3 Nov 2016, 2016 IEEE International Ultrasonics Symposium (IUS). Piscataway: IEEE, 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
1 Citation (Scopus)
100 Downloads (Pure)
Open Access
File
3 Downloads (Pure)

A model-based study of transmit-receive longitudinal arrays for inspection of subsurface defects

Mohseni, E., MacLeod, C., Javadi, Y., Vithanage, R. K. W., Qiu, Z., Lines, D., Foster, E., Lukacs, P., Vasilev, M., Zimermann, R., Pierce, S. G. & Gachagan, A., 8 Apr 2020, In : Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems. 3, 3, 8 p., 031102 .

Research output: Contribution to journalArticle

An expert-systems approach to automatically determining flaw depth within candu pressure tubes

Lardner, T., West, G. M., Dobie, G. & Gachagan, A., 15 Jun 2017, 10th International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2017. A. N. S. (ed.). Red Hook, NY, Vol. 2. p. 904-913 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
2 Citations (Scopus)
8 Downloads (Pure)

An expert-systems approach to automatically determining flaw depth within CANDU pressure tubes

Lardner, T., West, G., Dobie, G. & Gachagan, A., 4 Apr 2017, (Accepted/In press). 10 p.

Research output: Contribution to conferencePaper

Open Access
File
51 Downloads (Pure)

A nonlinear elasticity approach to modelling the collapse of a shelled microbubble

Cowley, J., Mulholland, A. J. & Gachagan, A., 31 Aug 2017, In : IMA Journal of Applied Mathematics. 82, 4, p. 781-801 21 p.

Research output: Contribution to journalArticle

Open Access
File
46 Downloads (Pure)
Open Access
File
5 Citations (Scopus)
49 Downloads (Pure)

Applying hyperspectral imaging to continuous processing of pharmaceuticals

Dziewierz, J., McGinty, J., Macfhionnghaile, P., Svoboda, V., Sefcik, J., Gachagan, A., Nordon, A., Marshall, S. & Cleary, A., 4 Feb 2016. 1 p.

Research output: Contribution to conferencePoster

Open Access
File
22 Downloads (Pure)

A spectral method for sizing cracks using ultrasonic arrays

Cunningham, L. J., Mulholland, A. J., Tant, K. M. M., Gachagan, A., Harvey, G. & Bird, C., 9 Mar 2017, In : Inverse Problems in Science and Engineering. 19 p.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
45 Downloads (Pure)

Assessment of corrosion under insulation and engineered temporary wraps using pulsed eddy-current techniques

Morozov, M., Dobie, G. & Gachagan, A., 7 Sep 2017, 56th Annual British Conference on Non-Destructive Testing. Northampton, p. 475-484 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

A transdimensional Bayesian approach to ultrasonic travel-time tomography for non-destructive testing

Tant, K. M. M., Galetti, E., Mulholland, A. J., Curtis, A. & Gachagan, A., 29 Jun 2018, In : Inverse Problems. 34, 9, 29 p., 095002.

Research output: Contribution to journalArticle

Open Access
File
8 Citations (Scopus)
23 Downloads (Pure)

Automated pressure tube defect analysis

Zacharis, P., West, G., Wallace, C., Dobie, G. & Gachagan, A., 9 May 2019. 1 p.

Research output: Contribution to conferencePoster

Open Access
File
23 Downloads (Pure)

Automated sizing and classification of defects in CANDU pressure tubes

Lardner, T., West, G., Dobie, G. & Gachagan, A., 28 Sep 2017, (Accepted/In press) In : Nuclear Engineering and Design. 13 p.

Research output: Contribution to journalArticle

Open Access
File
42 Downloads (Pure)
Open Access
File
3 Citations (Scopus)
27 Downloads (Pure)

Broadband piezocrystal transducer array for non-destructive evaluation imaging applications

Qiu, Z., Fang, H., O'Leary, R., Gachagan, A. & Moldovan, A., 20 Dec 2018, Proceeding 2018 IEEE International Ultrasonics Symposium. New York: IEEE, 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
1 Citation (Scopus)
9 Downloads (Pure)

Calibration of ultrasonic hardware for enhanced total focusing method imaging

Ingram, M., Gachagan, A., Nordon, A., Mullholland, A. J. & Hegarty, M., 31 Jul 2020, In : Insight: The Journal of the British Institute of Non-Destructive Testing. 62, 7, p. 408-415 8 p.

Research output: Contribution to journalArticle

Open Access
File
7 Downloads (Pure)
Open Access
File
2 Downloads (Pure)
Open Access
File
3 Citations (Scopus)
14 Downloads (Pure)

Correction of B-scan distortion for optimum ultrasonic imaging of back walls with complex geometries

Davì, S., Mineo, C., MacLeod, C., Pierce, S. G., Gachagan, A., Paton, S., Munro, G., O'Brien-O'Reilly, J. & McCubbin, C., 1 Apr 2020, In : Insight: The Journal of the British Institute of Non-Destructive Testing. 62, 4, p. 184-191 8 p.

Research output: Contribution to journalArticle

Open Access
File
12 Downloads (Pure)

Data-driven analysis of ultrasonic inspection data of pressure tubes

Zacharis, P., West, G., Dobie, G., Lardner, T. & Gachagan, A., 30 Jun 2018, In : Nuclear Technology. 202, p. 153-160 8 p.

Research output: Contribution to journalArticle

Open Access
File
34 Downloads (Pure)

Data-driven analysis of ultrasonic pressure tube inspection data

Zacharis, P., West, G. M., Dobie, G., Lardner, T. & Gachagan, A., 11 Jun 2017.

Research output: Contribution to conferencePaper

Open Access
File
1 Citation (Scopus)
44 Downloads (Pure)

Design of 2D sparse array transducers for anomaly detection in medical phantoms

Li, X., Gachagan, A. & Murray, P., 17 Sep 2020, (Accepted/In press) In : Sensors.

Research output: Contribution to journalArticle

Design of a 2D sparse array transducer for integration into an ergonomic transcranial ultrasound system

Li, X., Gachagan, A., Dziewierz, J., O'Leary, R. & Murray, P., 2 Nov 2017, 2017 IEEE International Ultrasonics Symposium, IUS 2017. Piscataway, NJ: IEEE, 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
31 Downloads (Pure)

Design of a low profile array transducer in d15 mode for high angled shear wave generation

Qiu, Z., O'Leary, R., Gachagan, A. & Dobson, J., 21 Sep 2016, Ultrasonics Symposium (IUS), 2016 IEEE International. IEEE, 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
138 Downloads (Pure)

Determination of bubble size distribution using ultrasound array imaging

Ingram, M., Mineo, C., Gachagan, A., Mulholland, A. J., Nordon, A. & Hegarty, M., 1 Jul 2020, In : IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 67, 7, p. 1424-1437 14 p.

Research output: Contribution to journalArticle

Open Access
File
4 Downloads (Pure)

Determining position and orientation of a 3-wheel robot on a pipe using an accelerometer

McGregor, A., Dobie, G., Pearson, N. R., MacLeod, C. N. & Gachagan, A., 1 May 2020, In : IEEE Sensors Journal. 20, 9, p. 5061-5071 11 p., 8951135.

Research output: Contribution to journalArticle

Open Access
File
8 Downloads (Pure)

Directional receiver for biomimetic sonar system

Guarato, F., Andrews, H., Windmill, J. F., Jackson, J. & Gachagan, A., 5 Dec 2016, In : Physics Procedia. 87, p. 24-28 5 p.

Research output: Contribution to journalConference Contribution

Open Access
File
1 Citation (Scopus)
61 Downloads (Pure)
Open Access
File
1 Citation (Scopus)
13 Downloads (Pure)

Enhanced phased array imaging through reverberating interfaces

Ingram, M., Gachagan, A., Mulholland, A. J., Nordon, A., Dziewierz, J. & Hegarty, M., 8 May 2019, 45th Annual Review Of Progress In Quantitative Nondestructive Evaluation. Melville, NY, Vol. 38. 8 p. (AIP Conference Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
2 Downloads (Pure)
Open Access
File
12 Downloads (Pure)

Finite element analysis of ultrasonic CFRP laminate inspection

Dobson, J., Gachagan, A., O'Leary, R., Tweedie, A. & Harvey, G., 12 Sep 2016. 12 p.

Research output: Contribution to conferenceProceeding

Open Access
File
1 Citation (Scopus)
82 Downloads (Pure)

Finite element analysis simulations for ultrasonic array NDE inspections

Dobson, J., Tweedie, A., Harvey, G., O'Leary, R., Mulholland, A., Tant, K. & Gachagan, A., 10 Feb 2016, 42nd Annual Review of Progress in Quantitative Nondestructive Evaluation: Incorporating the 6th European-American Workshop on Reliability of NDE. Chimenti, D. E. & Bond, L. J. (eds.). Melville, NY., Vol. 1706. p. 040005-1 - 040005-14 14 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
5 Citations (Scopus)
205 Downloads (Pure)
Open Access
File
1 Citation (Scopus)
40 Downloads (Pure)

Fractal geometry 1-3 piezoelectric composite with improved bandwidth

Fang, H., Mulholland, A., Gachagan, A. & O'Leary, R., 2016.

Research output: Contribution to conferencePoster

Hybrid simulation model of ultrasonic inspection of pressure tubes in nuclear industry

Zhao, H., Dobson, J., Gachagan, A., Lardner, T. & Dobie, G., 12 Sep 2016, Proceedings of 55th Annual British Conference of Non-Destructive Testing - NDT 2016 : Theoretical Modelling . New York, USA, p. 1-10 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
69 Downloads (Pure)
File

Improving the operational bandwidth of a 1-3 piezoelectric composite transducer using Sierpinski Gasket fractal geometry

Fang, H., Qiu, Z., O'Leary, R., Gachagan, A. & Mulholland, A., 18 Sep 2016, Ultrasonics Symposium (IUS), 2016 IEEE International. IEEE, 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
4 Citations (Scopus)
81 Downloads (Pure)
Open Access
File
3 Downloads (Pure)
Open Access
File
4 Downloads (Pure)

Intentional weld defect process: from manufacturing by ‎‎robotic welding machine to inspection ‎using TFM phased ‎‎array ‎

Javadi, Y., Vasilev, M., MacLeod, C. N., Pierce, S. G., Su, R., Mineo, C., Dziewierz, J. & Gachagan, A., 8 May 2019, 45th Annual Review of Progress in Quantitative Nondestructive Evaluation. Laflamme, S., Holland, S. & Bond, L. J. (eds.). Melville, NY., 040011

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
3 Citations (Scopus)
31 Downloads (Pure)
2 Citations (Scopus)

Investigation of fundamental ultrasonic propagation characteristics in NDT of electron beam melting additive manufactured samples

Tofeldt, O., Pierce, SG., Smillie, G., Kerr, W., Flockhart, GMH., Macleod, CN., Blue, R., Gachagan, A., Stratoudaki, T., Andersson, J. & McMahon, D., 14 Feb 2018, (Accepted/In press). 4 p.

Research output: Contribution to conferencePaper

Open Access
File
41 Downloads (Pure)

Linear ultrasonic array design using cantor set fractal geometry

Fang, H., Qiu, Z., Mulholland, A. J., O'Leary, R. L. & Gachagan, A., 8 May 2018. 4 p.

Research output: Contribution to conferencePoster

Open Access
File
14 Downloads (Pure)

Linear ultrasonic array incorporating a Cantor Set fractal element configuration

Fang, H., Qiu, Z., O'Leary, R. L., Gachagan, A. & Mulholland, A. J., 2 Nov 2017, IEEE International Ultrasonics Symposium (IUS), 2017. Piscataway, N.J.: IEEE, 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
25 Downloads (Pure)

Mapping the material microstructure of safety critical components using ultrasonic phased arrays

Tant, K. M. M., Galetti, E., Mulholland, A. J., Curtis, A. & Gachagan, A., 18 Sep 2016, 2016 IEEE International Ultrasonics Symposium (IUS) . Piscataway, NJ.: IEEE, 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
2 Citations (Scopus)
117 Downloads (Pure)
Open Access
File
69 Downloads (Pure)
Open Access
File
6 Downloads (Pure)