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2020
Open Access
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bubbles
Ultrasonics
Imaging techniques
reflectors
phased arrays
2019
16 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
Guided electromagnetic wave propagation
Robotics
Imaging techniques
Ultrasonic waves
Screening
Inspection
Defects
Surface defects
Signal to noise ratio
18 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
Defects
Knowledge based systems
Testing
Automation
Inspection
1 Downloads (Pure)
Open Access
File
Transducers
Composite materials
Ultrasonics
Ultrasonic imaging
Ball bearings

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
reverberation
phased arrays
ultrasonics
vessels
steels
9 Downloads (Pure)
Open Access
File
Outages
Inspection
Ultrasonics
Defects
Testing
18 Downloads (Pure)
Open Access
File
Welds
Robotics
Inspection
Defects
Welding
Welding
Welds
Robotics
Inspection
Tungsten
1 Citation (Scopus)
28 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
Welding machines
Welds
Robotics
Inspection
Defects
5 Downloads (Pure)

Towards guided wave robotic NDT inspection: EMAT size matters

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

Research output: Contribution to conferencePaper

Open Access
File
Acoustic transducers
Guided electromagnetic wave propagation
Nondestructive examination
Robotics
Inspection
Inspection
Ultrasonics
Wire
Defects
Tungsten carbide
3 Citations (Scopus)
31 Downloads (Pure)
Open Access
File
Inspection
Ultrasonics
Wire
Imaging techniques
Wheels
6 Downloads (Pure)
Open Access
File
phased arrays
inspection
arcs
titanium
Titanium
8 Downloads (Pure)
Open Access
File
Acoustic noise
Signal to noise ratio
3D printers
Ultrasonics
Pixels
2018
3 Citations (Scopus)
19 Downloads (Pure)

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
Travel Time
Travel time
Tomography
Nondestructive examination
Bayesian Approach
2 Citations (Scopus)
21 Downloads (Pure)
Open Access
File
Fractals
Transducers
fractals
transducers
broadband
1 Citation (Scopus)
9 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
Transducers
Bandwidth
Imaging techniques
Materials properties
Microstructure
31 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
inspection
ultrasonics
Inspection
Ultrasonics
tubes
36 Downloads (Pure)

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
Electron beam melting
Ultrasonic propagation
Nondestructive examination
3D printers
Ultrasonic velocity
14 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
Fractals
Ultrasonics
Geometry
Bandwidth
Image resolution
1 Downloads (Pure)

Multi-aperture beamforming for automated large structure inspection using ultrasonic phased arrays

Su, R., Mineo, C., MacLeod, C. N., Pierce, S. G. & Gachagan, A., 17 May 2018, (Accepted/In press) 45th Annual Review of Progress in Quantitative Nondestructive Evaluation. Melville, NY.

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

Open Access
File
Beamforming
Inspection
Ultrasonics
Robotics
Scanning
18 Downloads (Pure)
Open Access
File
Synthetic apertures
Transducers
Inspection
Ultrasonics
Defects

Ultrasonic array imaging through reverberating layers for industrial process analysis

Ingram, M., Gachagan, A., Mulholland, A. J., Nordon, A. & Hegarty, M., 20 Dec 2018, 2018 IEEE International Ultrasonics Symposium. Piscataway, NJ: IEEE, 4 p.

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

Open Access
File
Reverberation
Ultrasonics
Imaging techniques
Acoustic impedance
Steel
1 Citation (Scopus)
1 Downloads (Pure)
Inspection
Ultrasonics
Wire
Imaging techniques
Wheels
1 Citation (Scopus)
11 Downloads (Pure)

Virtual prototyping of a catheter transducer array for internal hepatic sonoporation

Moldovan, A. C., Dziewierz, J., Gachagan, A., Cochran, S. & Lay, H., 20 Dec 2018, 2018 IEEE International Ultrasonics Symposium (IUS). Piscataway, NJ: IEEE, 4 p.

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

Open Access
File
Catheters
Transducers
Ultrasonics
Liver
Chemotherapy
18 Downloads (Pure)

Wavelet analysis of poorly-focused ultrasonic signal of pressure tube inspection in nuclear industry

Zhao, H., Gachagan, A., Dobie, G. & Lardner, T., 20 Apr 2018, 44th Annual Rview of Progress in Quantitative Nondestructive Evaluation. Chimenti, D. E. & Bond, L. J. (eds.). Melville, New York, Vol. 37. 9 p.

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

Open Access
File
Nuclear industry
Wavelet analysis
Inspection
Ultrasonics
Defects
2017
1 Citation (Scopus)
8 Downloads (Pure)

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
Expert systems
Defects
Outages
Hydrides
Hydrogen
48 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
Expert systems
Defects
Outages
Hydrides
Hydrogen
45 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
Microbubbles
Nonlinear Elasticity
Elasticity
Shell
Modeling
5 Citations (Scopus)
44 Downloads (Pure)
Open Access
File
phased arrays
factorization
ultrasonics
apertures
S matrix theory
1 Citation (Scopus)
45 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
Spectral Methods
Crack
Ultrasonics
Scattering Matrix
Cracks

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

Eddy currents
Insulation
Corrosion
Degradation
Nondestructive examination
21 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
sizing
defect
tubes
Defects
defects
1 Citation (Scopus)
39 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
Inspection
Ultrasonics
Defects
Coolants
Heavy water
30 Downloads (Pure)

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
human factors engineering
transducers
lobes
sunflowers
evaluation
25 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
Fractals
Transducers
Piezoelectric transducers
Ultrasonics
Bandwidth
2016
1 Citation (Scopus)
41 Downloads (Pure)

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
Clustering algorithms
ultrasonics
Ultrasonics
defects
artifacts
1 Citation (Scopus)
95 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
Transducers
Ultrasonics
Sonar
Acoustic emissions
Electrostatics
17 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
Crystals
Flow rate
Processing
Pharmaceutical Preparations
Support vector machines
135 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
Shear waves
Transducers
Inspection
Ultrasonics
Imaging techniques
1 Citation (Scopus)
60 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
sonar
biomimetics
Sonar
Biomimetics
receivers
1 Citation (Scopus)
78 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
carbon fibers
laminates
Carbon fibers
Laminates
inspection
3 Citations (Scopus)
197 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
Inspection
Ultrasonics
Finite element method
Welds
Defects

Fractal geometry 1-3 piezoelectric composite with improved bandwidth

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

Research output: Contribution to conferencePoster

69 Downloads (Pure)

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
Nuclear industry
Inspection
Ultrasonics
Extrapolation
Wave propagation
4 Citations (Scopus)
77 Downloads (Pure)

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
Fractals
Transducers
Bandwidth
Geometry
Composite materials
2 Citations (Scopus)
116 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
Ultrasonics
Defects
Microstructure
Crystal microstructure
Markov processes
66 Downloads (Pure)
Open Access
File
Microbubbles
Unfolding
Mathematical Modeling
Shell
Theoretical Models

Process Control

Lozev, M., Becker, E., Orwig, S., Avila, C., Djordjevic, G., Gachagan, A., Herdsman, C., Mulholland, A., Poole, A. & Vickers, G., 9 Aug 2016, IPC No. G01N29/02, Patent No. 15/043,724, Priority date 3 Apr 2015, Priority No. 62/128,348

Research output: Patent

Patents and inventions
Process control
Petrochemicals
Ultrasonics
Processing