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Number of items: 45.

Article

Ramadas, Sivaram Nishal and Jackson, Joseph and Dziewierz, Jerzy and O'Leary, Richard and Gachagan, Anthony (2014) Application of conformal map theory for design of 2-D ultrasonic array structure for ndt imaging application : a feasibility study. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 61 (3). pp. 496-504. ISSN 0885-3010

Hopper, Clare and Assous, Said and Wilkinson, Paul and Gunn, David and Jackson, Peter and Rees, John and O'Leary, Richard and Lovell, Mike (2012) Bioinspired low-frequency material characterisation. Advances in Acoustics and Vibration, 2012. ISSN 1687-6261

Octavio, Alberto and O'Leary, Richard L. and Whiteley, Simon M. and Martínez- Graullera, Óscar and Martín-Arguedas, Carlos and Gómez-Ullate, Luis and Montero de Espinosa, Francisco (2011) Air-coupled linear and sparse cMUT array manufactured using MUMPs process. Microsystem Technologies, 17 (10-11). pp. 1635-1644. ISSN 0946-7076

Troge, Alexandre and O'Leary, Richard and Hayward, Gordon and Pethrick, Richard and Mulholland, Anthony (2010) Properties of photocured epoxy resin materials for application in piezoelectric ultrasonic transducer matching layers. Journal of the Acoustical Society of America, 128 (5). pp. 2704-2714. ISSN 0001-4966

Young, A. and Mulholland, A.J. and O'Leary, R.L. (2009) The causal differential scattering approach to calculating the effective properties of random composite materials with a particle size distribution. Springer Proceedings in Physics, 128. pp. 49-59. ISSN 0930-8989

Orr, L. and Mulholland, A.J. and O'Leary, R.L. and Hayward, G. (2008) Analysis of ultrasonic transducers with fractal architecture. Fractals, 16 (4). pp. 333-349. ISSN 0218-348X

Mulholland, A. and Ramadas, S.N. and O'Leary, R.L. and Parr, A.C.S. and Hayward, G. and Troge, Alexandre and Pethrick, R.A. (2008) Enhancing the performance of piezoelectric ultrasound transducers by the use of multiple matching layers. IMA Journal of Applied Mathematics, 73 (6). pp. 936-949. ISSN 0272-4960

Orr, L. and Mulholland, A.J. and O'Leary, R.L. and Hayward, G. (2008) Harmonic analysis of lossy piezoelectric composite transducers using the plane wave expansion method. Ultrasonics, 48 (8). pp. 652-663. ISSN 0041-624X

O'Leary, R.L. and Hayward, G. and Murray, V. (2007) Finite element technique for the assessment of 3-1 and 'super 1-3' connectivity piezoelectric composite transducers. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 54 (10). pp. 2024-2035. ISSN 0885-3010

Orr, L. and Mulholland, A.J. and O'Leary, R.L. and Parr, A.C.S. and Pethrick, R.A. and Hayward, G. (2007) Theoretical modelling of frequency dependent elastic loss in composite piezoelectric Transducers. Ultrasonics, 47 (1). pp. 130-137. ISSN 0041-624X

Mulholland, A. and Ramadas, S.N. and O'Leary, R.L. and Parr, A.C.S. and Troge, A. and Hayward, G. and Pethrick, R.A. (2007) A theoretical analysis of a piezoelectric ultrasound device with an active matching layer. Ultrasonics, 47 (1). pp. 102-110. ISSN 0041-624X

Parr, A.C.S. and O'Leary, R.L. and Hayward, G. (2005) Improving the thermal stability of 1-3 piezoelectric composite transducers. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 52 (4). pp. 550-563. ISSN 0885-3010

Book Section

O'Leary, Richard and Brown, Gordon and Harvey, Gerald (2013) Droplets, vapours and clouds – a new approach to capacitive transducer manufacture. In: 2013 IEEE International Ultrasonics Symposium (IUS). IEEE, Piscataway, New Jersey, pp. 1105-1108. ISBN 9781467356862

Thattaliyath Kadumberi, Arjun Prakash and O'Leary, Richard and Gachagan, Anthony (2012) Ultrasonic imaging of electrofusion welded polythene pipes employed in utilities industry. In: 51st Annual Conference of the British Institute of Non-Destructive Testing 2012 (NDT 2012). British Institute of Non-Destructive Testing, Northampton, pp. 129-139. ISBN 9781622764372

Ho, Kwok Shun and Li, Minghui and O'Leary, Richard and Gachagan, Anthony (2012) Application of frequency compounding to ultrasonic signals for the NDE of concrete. In: Review of Progress in Quantitative Nondestructive Evaluation. AIP Conference Proceedings, 31A & 31B . AIP Conference Proceedings, Melville, pp. 1508-1515. ISBN 9780735410138

Mutasa, Tapiwa and Nordon, Alison and Gachagan, Anthony and O'Leary, Richard (2012) Evaluation of ultrasonic reactor for material processing. In: Proceedings of the 8th International Symposium on Cavitation. CAV 2012 Organizers & Research Publishing Services, pp. 317-320. ISBN 9789810728267

Wang, Chuangnan and Gachagan, Anthony and O'Leary, Richard and MacKersie, John (2012) High intensity focused ultrasound array transducers using 2-2 stacked piezoelectric composite appropriate for sonochemisrty application. In: 2012 IEEE International Ultrasonics Symposium (IUS) Proceedings. IEEE, pp. 2497-2500. ISBN 9781467345613

Ramadas, Sivaram Nishal and Jackson, Joseph and Tweedie, Andrew and O'Leary, Richard and Gachagan, Anthony (2011) Conformally mapped 2D ultrasonic array structure for NDT imaging application. In: Proceedings 2010 IEEE international ultrasonics symposium. IEEE, pp. 33-36. ISBN 9781457703829

Mutasa, T. and Gachagan, A. and Nordon, A. and O'Leary, R.L. (2011) Ultrasonic wave propagation in cylindrical vessels and implications for ultrasonic reactor design. In: Proceedings 2010 IEEE International Ultrasonics Symposium. IEEE, New York, pp. 1470-1473. ISBN 9781457703829

Mulholland, Anthony and MacKersie, John and O'Leary, Richard and Gachagan, Anthony and Walker, A. and Ramadas, Sivaram Nishal (2011) The use of fractal geometry in the design of piezoelectric ultrasonic transducers. In: 2011 IEEE International Ultrasonics Symposium (IUS). IEEE, Piscataway, NJ, United States, pp. 1559-1562. ISBN 9781457712531

Dziewierz, Jerzy and Ramadas, Sivaram Nishal and Gachagan, Anthony and O'Leary, Richard (2010) Hexagonal array structure for 2D NDE applications. In: Review of progress in quantitative nondestructive evaluation. AIP Conference Proceedings, 29 . American Institute of Physics, Melville, pp. 825-830. ISBN 9780735407480

Ramadas, S.N. and O'Leary, R.L. and Gachagan, A. and Hayward, G. and Banks, R.A. (2010) A wideband annular piezoelectric composite transducer configuration with a graded active layer profile. In: Proceedings of the 2009 IEEE International Ultrasonics Symposium (IUS). IEEE, pp. 2742-2745. ISBN 9781424443895

Ramadas, Sivaram Nishal and O'Leary, Richard and Mulholland, Anthony and Hayward, Gordon and Mackintosh, Allan and Troge, Alexandre and Pethrick, Richard (2009) Tapered transmission line technique based graded matching layers for thickness mode piezoelectric transducers. In: 2009 IEEE International Ultrasonics Symposium. IEEE, Piscataway, pp. 1695-1698. ISBN 9781424443895

Parr, A.C.S. and O'Leary, R.L. and Hayward, G. and Smillie, G. (2003) Improving the thermal stability of 1-3 piezoelectric composite transducers manufactured using thermally conductive polymeric fillers. In: 2003 IEEE Ultrasonics symposium proceedings. IEEE, New York, pp. 362-365.

Parr, A.C.S. and O'Leary, R.L. and Hayward, G. and Smillie, G. and Benny, C.G. and Ewing, H.C. and MacKintosh, A.R. (2002) Investigating the thermal stability of 1-3 piezoelectric composite transducers by varying the thermal conductivity and glass transition temperature of the polymeric filler material. In: 2002 IEEE Ultrasonics symposium proceedings. Ultrasonics Symposium . IEEE, New York, pp. 1173-1176. ISBN 0780375823

Conference or Workshop Item

Xiao, Bo and O'Leary, Richard and Gachagan, Anthony and Li, Wenqi and Burnett, Timothy (2014) Accurate finite element model of equiaxed-grain engineering material for ultrasonic inspection. In: IEEE 2014 International Ultrasonics Symposium, 2014-09-03 - 2014-09-06, Chicago. (In Press)

O'Leary, Richard and Harvey, Gerald (2014) Polymeric capacitive transducers and arrays for gas coupled operation. In: IEEE 2014 International Ultrasonics Symposium, 2014-09-03 - 2014-09-06, Chicago. (In Press)

Gachagan, Anthony and Xiao, Bo and Gongzhang, Rui and O'Leary, Richard and Li, Minghui (2013) Image de-nosing via spectral distribution similarity analysis for non-destructive evaluation. In: 40th Annual Review of Progress in Quantitative Nondestructive Evaluation: Incorporating the 10th International Conference on Barkhausen Noise and Micromagnetic Testing, 2013-07-21 - 2013-07-26, Baltimore.

Gachagan, Anthony and Mutasa, Tapiwa and Nordon, Alison and O'Leary, Richard (2011) Design and evaluation of multi-frequency reactor vessel. In: 40th Annual Symposium of the Ultrasonic Industry Association, 2011-05-23 - 2011-05-25, Glasgow.

Dziewierz, J. and Ramadas, S.N. and Gachagan, A. and O'Leary, R.L. and Hayward, G. (2010) A 2D ultrasonic array design incorporating hexagonal-shaped elements for NDE applications. In: 2009 IEEE Ultrasonics Symposium, 2009-09-20 - 2009-09-23, Rome.

Ramadas, S.N. and Dziewierz, J. and O'Leary, R.L. and Gachagan, A. and Velichko, A. and Wilcox, P.D. (2010) An annular array with fiber composite microstructure for far field NDT imaging applications. In: 2009 IEEE Ultrasonics Symposium, 2009-09-20 - 2009-09-23, Rome.

Dziewierz, Jerzy and Gachagan, Anthony and O'Leary, Richard and Ramadas, Sivaram Nishal (2009) Numerical optimisation of piezocomposite material properties using 3D finite - element modeling. In: 16th International Congress on Sound and Vibration (CSV16), 2009-07-05 - 2009-07-09, Krakow.

Ramadas, S.N. and Hayward, G. and O'Leary, R.L. and McCunnie, T.F. and Mulholland, A. and Troge, A. and Pethrick, R.A. and Robertson, D. and Murray, V. (2007) A three-port acoustic lattice model for piezoelectric transducers containing opposing zones of polarization. In: 2007 IEEE International Ultrasonics Symposium, 2007-10-28 - 2007-10-31, New York.

Orr, L. and Mulholland, A.J. and O'Leary, R.L. and Hayward, G. (2007) A theoretical investigation of 2-2 composite transducers with high shear attenuation in the passive phase. In: GDR 2501/CNRS ST21: Étude de la propagation ultrasonore en milieux non homogènes en vue du contrôle non-destructif, 2007-03-01. (Unpublished)

O'Leary, R.L. and Parr, A.C.S. and Hayward, G. and Troge, A. and Pethrick, R.A. (2007) Experimental assessment of periodic piezoelectric composite arrays incorporating an anisotropic passive phase. In: IEEE Ultrasonics Symposium 2006, 2006-10-02 - 2006-10-06, Vancouver.

Gachagan, A. and Harvey, G. and O'Leary, R.L. and Mackersie, J.W. (2007) Investigating the influence of the constituent materials on the performance of periodic piezoelectric composite arrays. In: UNSPECIFIED.

Harvey, G. and Gachagan, A. and O'Leary, R.L. (2007) Simulation of the influence of hydrophones used for the characterization of pressure field distribution in low frequency, high power ultrasonic reactor vessels. In: 1999 IEEE International Ultrasonics Symposium, 1999-10-17 - 1999-10-20, Nevada.

O'Leary, R.L. and Tweedie, A. and Harvey, G. and Gachagan, A. and Holmes, C. and Wilcox, P. and Drinkwater, B. (2007) Total focussing method for volumetric imaging in immersion non destructive evaluation. In: 2007 IEEE International Ultrasonics Symposium, 2007-10-28 - 2007-10-31, New York.

Orr, L. and Mulholland, A.J. and O'Leary, R.L. and Hayward, G. (2006) Incorporation of viscoelastic loss into the plane wave expansion approach to modelling composite transducers. In: 2000 IEEE International Ultrasonics Symposium, 2000-10-22 - 2000-10-25, San Juan.

O'Leary, R.L. and Parr, A.C.S. and Troge, A. and Pethrick, R.A. and Hayward, G. (2006) Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties. In: 2005 IEEE International Ultrasonics Symosium, 2005-09-18 - 2005-09-21, Rotterdam.

O'Leary, R.L. and Hayward, G. and McCunnie, T.F. and Kijowski, M. (2005) 3-3 connectivity multilayered piezoelectric composites. In: 2004 IEEE Ultrasonics Symposium, 2004-08-23 - 2004-08-27, Montreal.

Puccio, J.J. and Gatzoulis, L. and O'Leary, R.L. and Hayward, G. (2004) Prediction method for the fundamental radial mode of multi-mode motors. In: 2004 IEEE Ultrasonics Symposium, 2004-08-23 - 2004-08-27, Montreal.

O'Leary, R.L. and Parr, A.C.S. and Hayward, G. (2003) Multi-layered piezoelectric composite transducers. In: IEEE Symposium on Ultrasonics 2003, 2003-10-05 - 2003-10-08, Hawaii.

O'Leary, R.L. and Hayward, G. (2002) A theoretical and experimental investigation into multilayered piezoelectric composite transducers. In: IEEE International Ultrasonic Symposium, 2002-10-08 - 2002-10-11, Munich.

Other

O'Leary, R.L. and Tweedie, A. (2009) Virtual prototyping for analysis of piezoelectric transducers. IEEE.

This list was generated on Mon Dec 22 21:45:20 2014 GMT.