• United Kingdom

Accepting PhD Students

1995 …2021
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Research Output 1995 2019

2019

Analysis of a fractal ultrasonic transducer with a range of piezoelectric length scales

Algehyne, E. A. & Mulholland, A. J., 1 Jun 2019, In : IMA Journal of Applied Mathematics. 84, 3, p. 605-631 25 p.

Research output: Contribution to journalArticle

Open Access
File
Ultrasonic transducers
Piezoelectric transducers
Transducer
Length Scale
Fractals
2018
1 Citation (Scopus)

A pipe organ-inspired ultrasonic transducer

Walker, A. J. & Mulholland, A. J., 1 Dec 2018, In : IMA Journal of Applied Mathematics. 82, 6, p. 1135-1150 16 p.

Research output: Contribution to journalArticle

Open Access
File
Ultrasonic transducers
Transducer
Pipe
Electrostatics
Transmission Line
3 Citations (Scopus)

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)
Open Access
File
Fractals
Transducers
fractals
transducers
broadband
1 Citation (Scopus)

Design-for-testing for improved remanufacturability

Tant, K. M. M., Mulholland, A. J., Curtis, A. & Ijomah, W. L., 10 Sep 2018, In : Journal of Remanufacturing.

Research output: Contribution to journalArticle

Open Access
File
Nondestructive examination
nondestructive testing
Testing
Geometry
Structural integrity
Open Access
File
Fractals
Ultrasonics
Geometry
Bandwidth
Image resolution
Open Access
File
Application programming interfaces (API)
Particle size analysis
Aspect ratio
Imaging techniques
Crystals
3 Citations (Scopus)
Open Access
File
Slurries
Particle size
Crystallization
Particle size analysis
Crystals
1 Citation (Scopus)

"Pipe organ" inspired air-coupled ultrasonic transducers with broader bandwidth

Zhu, B., Tiller, B. P., Walker, A. J., Mulholland, A. J. & Windmill, J. F. C., 1 Oct 2018, In : IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 65, 10, p. 1873-1881 9 p.

Research output: Contribution to journalArticle

Open Access
File
Ultrasonic transducers
organs
Piezoelectric transducers
transducers
ultrasonics

Positional uncertainty in optical-based metrology systems in large volume manufacturing

Miller, A., Mulholland, A. J., Pierce, S. G., Hughes, B. & Forbes, A. B., 4 Jul 2018, In : Acta IMEKO. 7, 2, 6 p.

Research output: Contribution to journalArticle

Open Access
File
Light refraction
Robotic assembly
Position measurement
Photogrammetry
Air
2 Citations (Scopus)

Using laboratory experiments to develop and test new Marchenko and imaging methods

da Costa Filho, C. A., Tant, K., Curtis, A., Mulholland, A. & Moran, C. M., 17 Oct 2018, SEG Technical Program: Expanded Abstracts. Tulsa, OK., p. 4352-4356 5 p.

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

Open Access
File
imaging method
critical experiments
heuristic methods
scaling
estimates
2017

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)
Open Access
File
phased arrays
factorization
ultrasonics
apertures
S matrix theory
1 Citation (Scopus)

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
2 Citations (Scopus)

A weak-inertia mathematical model of bubble growth in a polymer foam

Barlow, E., Bradley, A. M., Mulholland, A. J. & Torres-Sanchez, C., 30 Jun 2017, In : Journal of Non-Newtonian Fluid Mechanics. 244, p. 1-14 14 p.

Research output: Contribution to journalArticle

Open Access
File
Foam
foams
inertia
Inertia
Bubble

Design-for-testing for improved remanufacturability

Tant, K. M. M., Mulholland, A. J., Curtis, A. & Ijomah, W. L., 24 Oct 2017.

Research output: Contribution to conferencePaper

Open Access
File
Nondestructive examination
Testing
Geometry
Structural integrity
Warranty

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
7 Citations (Scopus)
Open Access
File
Needles
Diffraction
Particle size
Inverse problems
Particle size analysis

Pipe organ air-coupled broad bandwidth transducer

Zhu, B., Tiller, B., Windmill, J. F. C., Mulholland, A. J. & Walker, A. J., 6 Sep 2017. 4 p.

Research output: Contribution to conferencePaper

Open Access
File
Transducers
Pipe
Organs (musical instruments)
Bandwidth
Air
1 Citation (Scopus)

Renormalisation analysis of a composite ultrasonic transducer with a fractal architecture

Algehyne, E. & Mulholland, A. J., 12 Apr 2017, In : Fractals. 25, 2, 14 p., 1750015.

Research output: Contribution to journalArticle

Open Access
File
Ultrasonic transducers
Transducer
Renormalization
Fractals
Fractal
2016
4 Citations (Scopus)

A theoretical model of an ultrasonic transducer incorporating spherical resonators

Walker, A. J. & Mulholland, A. J., 1 Feb 2016, In : IMA Journal of Applied Mathematics. 81, 1, p. 1-25 25 p.

Research output: Contribution to journalArticle

Open Access
File
Ultrasonic transducers
Resonator
Transducer
Theoretical Model
Resonators
2 Citations (Scopus)

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
4 Citations (Scopus)

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
3 Citations (Scopus)

Integration of in situ imaging and chord length distribution measurements for estimation of particle size and shape

Agimelen, O. S., Jawor-Baczynska, A., McGinty, J., Dziewierz, J., Tachtatzis, C., Cleary, A., Haley, I., Michie, C., Andonovic, I., Sefcik, J. & Mulholland, A. J., 22 Apr 2016, In : Chemical Engineering Science . 144, p. 87-100 14 p.

Research output: Contribution to journalArticle

Open Access
File
Aspect ratio
Particle size
Imaging techniques
Particle size analysis
Processing
3 Citations (Scopus)

Investigating the performance of a fractal ultrasonic transducer under varying system conditions

Barlow, E., Algehyne, E. A. & Mulholland, A. J., 6 Jun 2016, In : Symmetry. 8, 6, 30 p., 43.

Research output: Contribution to journalArticle

Open Access
File
Ultrasonic transducers
Transducer
Fractals
Transducers
Fractal
2 Citations (Scopus)

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
Open Access
File
Microbubbles
Unfolding
Mathematical Modeling
Shell
Theoretical Models
7 Citations (Scopus)

On well-posedness for some thermo-piezoelectric coupling models

Mulholland, A. J., Picard, R., Trostorff, S. & Waurick, M., 31 Oct 2016, In : Mathematical Methods in the Applied Sciences. 39, 15, p. 4375-4384 12 p.

Research output: Contribution to journalArticle

Open Access
File
Well-posedness
Sensor
Ultrasonic transducers
Piezoelectric transducers
Sensors

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
11 Citations (Scopus)
Open Access
File
Time Reversal
Welds
decomposition
Decompose
operators
1 Citation (Scopus)

UK Success Stories in Industrial Mathematics

Aston, P. J., Mulholland, A. J. & Tant, K. M. M., 12 Feb 2016, Switzerland: Springer. 303 p.

Research output: Book/ReportAnthology

Climate Modeling
Statistics
Exercise
Sector
Health
2015

A Composite Ultrasonic Transducer with a Fractal Architecture

Algehyne, E. A. & Mulholland, A. J., 2015, (Unpublished) 119 p. University of Strathclyde.

Research output: Other contribution

File
Transducer
Fractal
Composite
Length Scale
Range of data
7 Citations (Scopus)

A finite element approach to modelling fractal ultrasonic transducers

Algehyne, E. A. & Mulholland, A. J., 1 Dec 2015, In : IMA Journal of Applied Mathematics. 80, 6, p. 1684-1702 19 p.

Research output: Contribution to journalArticle

Open Access
File
Ultrasonic transducers
Transducer
Fractals
Fractal
Finite Element
6 Citations (Scopus)
Open Access
File
Fractional Fourier Transform
Ultrasonic Wave
Chirp
Ultrasonic waves
ultrasonic radiation

A Maximum Eigenvalue Approximation for Crack-Sizing Using Ultrasonic Arrays

Cunningham, L., Mulholland, A. J., Tant, K. M. M., Gachagan, A., Harvey, G. & Bird, C., 20 May 2015, (Unpublished) Glasgow: University of Strathclyde, 50 p.

Research output: Working paper

File
Crack
Scattering Matrix
Defects
Eigenvalue
Approximation
14 Citations (Scopus)
Open Access
File
sizing
cracks
ultrasonics
Ultrasonics
Cracks

An analytical approach to objectively sizing cracks using ultrasonic phased array data

Tant, K. M. M., Mulholland, A. J. & Gachagan, A., 8 Sep 2015, 54th Annual British Conference of Non-Destructive Testing, NDT 2015. Northampton, p. 282-291 10 p.

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

Open Access
File
Ultrasonics
Cracks
Defects
Scattering
Born approximation

Dynamical model of an oscillating shelled microbubble

Cowley, J., Mulholland, A. J., Stewart, I. W. & Gachagan, A., 2015, Glasgow: University of Strathclyde. 110 p.

Research output: Book/ReportOther report

Open Access
File
Microbubbles
Dynamical Model
Shell
Theoretical Model
Unit of volume
22 Citations (Scopus)

Estimation of particle size distribution and aspect ratio of non-spherical particles from chord length distribution

Agimelen, O. S., Hamilton, P., Haley, I., Nordon, A., Vasile, M., Sefcik, J. & Mulholland, A. J., 17 Feb 2015, In : Chemical Engineering Science . 123, p. 629-640 12 p.

Research output: Contribution to journalArticle

Open Access
File
Chord or secant line
Particle Size
Aspect Ratio
Particle size analysis
Aspect ratio

Radiation properties of truncated cones to enhance the beam patterns of air-coupled transducers

Guarato, F., Mulholland, A. J., Windmill, J. F. & Gachagan, A., 19 Sep 2015, In : Physics Procedia. 70, p. 163-166 4 p.

Research output: Contribution to journalConference Contribution

Open Access
File
cones
transducers
air
radiation
lobes
1 Citation (Scopus)
Open Access
File
particulates
Transducers
Acoustics
Glass
acoustics
2014

A Finite Element Approach to Modelling Fractal Ultrasonic Transducers

Algehyne, E. & Mulholland, A., 2014, (Unpublished) 60 p. Glasgow : University of Strathclyde.

Research output: Other contribution

File
Transducer
Fractal
Finite Element
Length Scale
Modeling
2013
3 Citations (Scopus)

A dual weighted residual method applied to complex periodic gratings

Lord, N. H. & Mulholland, A. J., 8 Dec 2013, In : Proceedings of the Royal Society of Edinburgh: Section A Mathematics . 469, 2160, 17 p., 20130176.

Research output: Contribution to journalArticle

Open Access
File
A Posteriori Error Estimates
Gratings
Diffraction Efficiency
Diffraction Grating
Hermann Von Helmholtz
3 Citations (Scopus)

Analysis and interpretation of compressible fluid interaction upon the vibration of a circular membrane

Gorman, D., Horacek, J., Mulholland, A. & Gorman, M. N., 2013, In : Acta Technica. 58, 4, p. 443-461 19 p.

Research output: Contribution to journalArticle

File
Compressible Fluid
Membrane
Vibration
Membranes
Fluid
Diffraction Grating
A Priori Error Estimates
Finite Element Modeling
Diffraction gratings
Electromagnetic Wave
2 Citations (Scopus)

Explicit error bounds for the α-quasi-periodic Helmholtz problem

Lord, N. H. & Mulholland, A. J., 1 Oct 2013, In : Journal of the Optical Society of America A. 30, 10, p. 2111-2123 13 p.

Research output: Contribution to journalArticle

Open Access
File
A Priori Error Estimates
Explicit Bounds
Hermann Von Helmholtz
Error Bounds
estimates
2012
5 Citations (Scopus)

An application-specific design approach for 2D ultrasonic arrays

Dziewierz, J., Gachagan, A., Lord, N. & Mulholland, A., 2012, 51st Annual Conference of the British Institute of Non-Destructive Testing 2012 (NDT 2012): Proceedings of a meeting held 11-13 September 2012, Northamptonshire, UK. Northampton, 8 p.

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

Open Access
File
Ultrasonics
Design

Ultrasonic wave propagation in heterogenous media

Cunningham, L., Mulholland, A., Harvey, G. & Bird, C., 2012, Proceedings of Acoustics 2012 Nantes Conference, France . p. 1457-1462 6 p.

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

File
Ultrasonic propagation
Defects
Welds
Ultrasonics
Nuclear industry
2011
chirp
bubbles
ultrasonics
cross correlation
sizing